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  • C#精髓 GridView 72 般绝技

    转自[清清月儿]: http://blog.csdn.net/21aspnet/archive/2007/03/25/1540301.aspx

    快速预览:
    GridView无代码分页排序
    GridView选中,编辑,取消,删除
    GridView正反双向排序
    GridView和下拉菜单DropDownList结合
    GridView和CheckBox结合
    鼠标移到GridView某一行时改变该行的背景色方法一
    鼠标移到GridView某一行时改变该行的背景色方法二
    GridView实现删除时弹出确认对话框
    GridView实现自动编号
    GridView实现自定义时间货币等字符串格式
    GridView实现用“...”代替超长字符串
    GridView一般换行与强制换行
    GridView显示隐藏某一列
    GridView弹出新页面/弹出新窗口
    GridView固定表头(不用javascript只用CSS,2行代码,很好用)
    GridView合并表头多重表头无错完美版(以合并3列3行举例)
    GridView突出显示某一单元格(例如金额低于多少,分数不及格等)
    GridView加入自动求和求平均值小计
    GridView数据导入Excel/Excel数据读入GridView

    1.GridView无代码分页排序

    效果图:

    1.AllowSorting设为True,aspx代码中是AllowSorting="True";
    2.默认1页10条,如果要修改每页条数,修改PageSize即可,在aspx代码中是PageSize="12"。
    3.默认的是单向排序的,右击GridView弹出“属性”,选择AllowSorting为True即可。


    2.GridView选中,编辑,取消,删除:

    效果图:

    后台代码:
    你可以使用sqlhelper,本文没用。代码如下:

    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;

    public partial class _Default : System.Web.UI.Page 
    {

        SqlConnection sqlcon;
        SqlCommand sqlcom;
        
    string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码";
        
    protected void Page_Load(object sender, EventArgs e)
        {
            
    if (!IsPostBack)
            {
                bind();
            }
        }
        
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex 
    = e.NewEditIndex;
            bind();
        }

    //删除
        protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            
    string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcon 
    = new SqlConnection(strCon);
            sqlcom 
    = new SqlCommand(sqlstr,sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            bind();
        }

    //更新
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            sqlcon 
    = new SqlConnection(strCon);
            
    string sqlstr = "update 表 set 字段1='"
                
    + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"
                
    + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"
                
    + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='" 
                
    + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcom
    =new SqlCommand(sqlstr,sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            GridView1.EditIndex 
    = -1;
            bind();
        }

    //取消
        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView1.EditIndex 
    = -1;
            bind();
        }

    //绑定
        public void bind()
        {
            
    string sqlstr = "select * from 表";
            sqlcon 
    = new SqlConnection(strCon);
            SqlDataAdapter myda 
    = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds 
    = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, 
    "");
            GridView1.DataSource 
    = myds;
            GridView1.DataKeyNames 
    = new string[] { "id" };//主键
            GridView1.DataBind();
            sqlcon.Close();
        }
    }


    前台主要代码:
                                ... ...

     

    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
                            ForeColor
    ="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating
    ="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">
                            
    <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
                            
    <Columns>
                                
    <asp:BoundField DataField="身份证号码" HeaderText="用户ID" ReadOnly="True" />
                                
    <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
                                
    <asp:BoundField DataField="员工性别" HeaderText="性别" />
                                
    <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                                
    <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                                
    <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                                
    <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                            
    </Columns>
                            
    <RowStyle ForeColor="#000066" />
                            
    <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            
    <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                            
    <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        
    </asp:GridView>


    3.GridView正反双向排序:
    效果图:点姓名各2次的排序,点其他也一样可以。

    后台代码:

    using System;
    using System.Data;
    using System.Configuration;
    using System.Collections;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;
    public partial class Default3 : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        
    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=";
        
    protected void Page_Load(object sender, EventArgs e)
        {
            
    if (!IsPostBack)
            {
                ViewState[
    "SortOrder"= "身份证号码";
                ViewState[
    "OrderDire"= "ASC";
                bind();
            }
        }
        
    protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
        {
            
    string sPage = e.SortExpression;
            
    if (ViewState["SortOrder"].ToString() == sPage)
            {
                
    if (ViewState["OrderDire"].ToString() == "Desc")
                    ViewState[
    "OrderDire"= "ASC";
                
    else
                    ViewState[
    "OrderDire"= "Desc";
            }
            
    else
            {
                ViewState[
    "SortOrder"= e.SortExpression;
            }
            bind();
        }

        
    public void bind()
        {
            
            
    string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon 
    = new SqlConnection(strCon);
            SqlDataAdapter myda 
    = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds 
    = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, 
    "飞狐工作室");
            DataView view 
    = myds.Tables["飞狐工作室"].DefaultView;
            
    string sort = (string)ViewState["SortOrder"+ " " + (string)ViewState["OrderDire"];
            view.Sort 
    = sort;
            GridView1.DataSource 
    = view;
            GridView1.DataBind();
            sqlcon.Close();
        }
    }

     

    前台主要代码:

     

    <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                            CellPadding
    ="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                            
    <FooterStyle BackColor="White" ForeColor="#000066" />
                            
    <Columns>
                                 
    <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
                                
    <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
                                
    <asp:BoundField DataField="员工性别" HeaderText="性别" SortExpression="员工性别"/>
                                
    <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
                                    
                            
    </Columns>
                            
    <RowStyle ForeColor="#000066" />
                            
    <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            
    <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                            
    <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        
    </asp:GridView>

    4.GridView和下拉菜单DropDownList结合:

    效果图:

    后台代码:
    using System;
    using System.Data;
    using System.Configuration;
    using System.Collections;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;
    public partial class Default4 : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            DropDownList ddl;
            if (!IsPostBack)
            {
                string sqlstr = "select top 5 * from 飞狐工作室";
                sqlcon = new SqlConnection(strCon);
                SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
                DataSet myds = new DataSet();
                sqlcon.Open();
                myda.Fill(myds, "飞狐工作室");
                GridView1.DataSource = myds;
                GridView1.DataBind();
                for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
                {
                    DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
                    if (Convert.ToString(mydrv["员工性别"]).Trim() == "True")
                    {
                        ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                        ddl.SelectedIndex = 0;
                    }
                    if (Convert.ToString(mydrv["员工性别"]).Trim() == "False")
                    {
                        ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                        ddl.SelectedIndex = 1;
                    }
                }
                sqlcon.Close();
            }
        }
        public SqlDataReader ddlbind()
        {
            string sqlstr = "select distinct 员工性别 from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);
            sqlcon.Open();
            return sqlcom.ExecuteReader();
        }

    前台主要代码:
    <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                            CellPadding="3" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                 <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
                                <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
                                <asp:TemplateField HeaderText="员工性别">
                                    <ItemTemplate>
                                        <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="员工性别" DataTextField="员工性别">
                                        </asp:DropDownList>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
                                   
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>

    5.GridView和CheckBox结合:

    效果图:

    后台代码:

    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;

    public partial class Default5 : System.Web.UI.Page
    {
    //清清月儿http://blog.csdn.net/21aspnet
        SqlConnection sqlcon;
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();
            }
        }
        protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
        {
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
                if (CheckBox2.Checked == true)
                {
                    cbox.Checked = true;
                }
                else
                {
                    cbox.Checked = false;
                }
            }
        }
        protected void Button2_Click(object sender, EventArgs e)
        {
            sqlcon = new SqlConnection(strCon);
            SqlCommand sqlcom;
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
                if (cbox.Checked == true)
                {

                    string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[i].Value + "'";
                    sqlcom = new SqlCommand(sqlstr, sqlcon);
                    sqlcon.Open();
                    sqlcom.ExecuteNonQuery();
                    sqlcon.Close();
                }
            }
            bind();
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            CheckBox2.Checked = false;
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
                cbox.Checked = false;
            }
        }
        public void bind()
        {
            string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "tb_Member");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            sqlcon.Close();
        }
    }

    前台主要代码:

    <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                            CellPadding="3" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                 <asp:TemplateField>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="CheckBox1" runat="server" />
                                    </ItemTemplate>
                                </asp:TemplateField>
                                 <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
                                <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
                               
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
                                   
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>
                         <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="9pt" OnCheckedChanged="CheckBox2_CheckedChanged"
                            Text="全选" />
                        <asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" />
                        <asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="删除" OnClick="Button2_Click" />

    6.鼠标移到GridView某一行时改变该行的背景色方法一:

    效果图:

    做法:
    双击GridView的OnRowDataBound事件;
    在后台的GridView1_RowDataBound()方法添加代码,最后代码如下所示:
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            int i;
            //执行循环,保证每条数据都可以更新
            for (i = 0; i < GridView1.Rows.Count; i++)
            {
                //首先判断是否是数据行
                if (e.Row.RowType == DataControlRowType.DataRow)
                {
                    //当鼠标停留时更改背景色
                    e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
                    //当鼠标移开时还原背景色
                    e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
                }
            }

        }

    前台代码:
    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
        <title>实现鼠标划过改变GridView的行背景色 清清月儿http://blog.csdn.net/21aspnet </title>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
            <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份证号码"
                DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
                <Columns>
                    <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />
                    <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
                    <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />
                    <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                </Columns>
                <FooterStyle BackColor="White" ForeColor="#000066" />
                <RowStyle ForeColor="#000066" />
                <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
            </asp:GridView>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"
                SelectCommand="SELECT top 5 [身份证号码], [姓名], [员工性别], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>
       
        </div>
        </form>
    </body>
    </html>

    7.鼠标移到GridView某一行时改变该行的背景色方法二:

    效果图:

    做法:和上面的一样就是代码不同
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            //int i;
            ////执行循环,保证每条数据都可以更新
            //for (i = 0; i < GridView1.Rows.Count; i++)
            //{
            //    //首先判断是否是数据行
            //    if (e.Row.RowType == DataControlRowType.DataRow)
            //    {
            //        //当鼠标停留时更改背景色
            //        e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
            //        //当鼠标移开时还原背景色
            //        e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
            //    }
            //}
            //如果是绑定数据行
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                //鼠标经过时,行背景色变
                e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
                //鼠标移出时,行背景色变
                e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");
            }

        }

    8.GridView实现删除时弹出确认对话框:

    效果图:

    实现方法:
    双击GridView的OnRowDataBound事件;
    在后台的GridView1_RowDataBound()方法添加代码,最后代码如下所示:

        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            //如果是绑定数据行
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                 if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
                {
                    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除:\"" + e.Row.Cells[1].Text + "\"吗?')");
                }
            }

        }

    9.GridView实现自动编号:

    效果图:

    实现方法:
    双击GridView的OnRowDataBound事件;
    在后台的GridView1_RowDataBound()方法添加代码,最后代码如下所示:
        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            //如果是绑定数据行 //清清月儿http://blog.csdn.net/21aspnet 
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                ////鼠标经过时,行背景色变
                //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
                ////鼠标移出时,行背景色变
                //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

                ////当有编辑列时,避免出错,要加的RowState判断
                //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
                //{
                //    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除:\"" + e.Row.Cells[1].Text + "\"吗?')");
                //}

            }
            if (e.Row.RowIndex != -1)
            {
                int id = e.Row.RowIndex + 1;
                e.Row.Cells[0].Text = id.ToString();
            }

        }

     

    注意这时最好把前台的第一列的表头该为“编号”,因为以前的第一列被“吃掉”了。
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
                                <asp:BoundField DataField="员工性别" HeaderText="性别" />
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                                <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                                <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                                <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>

    10.GridView实现自定义时间货币等字符串格式:

    效果图:
    图1-未格式化前

    图2-格式化后

    解决方法:

    在asp.net 2.0中,如果要在绑定列中显示比如日期格式等,如果用下面的方法是显示不了的

    <asp :BoundField DataField="CreationDate"
    DataFormatString="{0:M-dd-yyyy}"
    HeaderText="CreationDate" />

    主要是由于htmlencode属性默认设置为true,已防止XSS攻击,安全起见而用的,所以,可以有以下两种方法解决

    1、

    <asp :GridView ID="GridView1" runat="server">
    <columns>
    <asp :BoundField DataField="CreationDate"
    DataFormatString="{0:M-dd-yyyy}"
    HtmlEncode="false"
    HeaderText="CreationDate" />
    </columns>
    </asp>

    将htmlencode设置为false即可

    另外的解决方法为,使用模版列

    <asp :GridView ID="GridView3" runat="server" >
    <columns>
    <asp :TemplateField HeaderText="CreationDate" >
    <edititemtemplate>
    <asp :Label ID="Label1" runat="server"
    Text='<%# Eval("CreationDate", "{0:M-dd-yyyy}") %>'>
    </asp>
    </edititemtemplate>
    <itemtemplate>
    <asp :Label ID="Label1" runat="server"
    Text=’<%# Bind("CreationDate", "{0:M-dd-yyyy}") %>'>
    </asp>
    </itemtemplate>
    </asp>
    </columns>
    </asp>

    前台代码:
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份证号码"
                DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
                <Columns>
                    <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />
                    <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
                    <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                    <asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" />
                    <asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" />
                </Columns>
                <FooterStyle BackColor="White" ForeColor="#000066" />
                <RowStyle ForeColor="#000066" />
                <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
            </asp:GridView>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"
                SelectCommand="SELECT top 5 [出生日期], [起薪], [身份证号码], [姓名], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>

    附录-常用格式化公式:
    {0:C}  货币;
    {0:D4}由0填充的4个字符宽的字段中显示整数;
    {0:000.0}四舍五入小数点保留第几位有效数字;
    {0:N2}小数点保留2位有效数字;{0:N2}%   小数点保留2位有效数字加百分号;
    {0:D}长日期;{0:d}短日期;{0:yy-MM-dd}   例如07-3-25;;{0:yyyy-MM-dd}  例如2007-3-25

     11.GridView实现用“...”代替超长字符串:

    效果图:

    解决方法:数据绑定后过滤每一行即可
    for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                DataRowView mydrv;
                string gIntro;
                if (GridView1.PageIndex == 0)
                {
                    mydrv = myds.Tables["飞狐工作室"].DefaultView[i];//表名
                    gIntro = Convert.ToString(mydrv["家庭住址"]);//所要处理的字段
                    GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
                }
                else
                {
                    mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
                    gIntro = Convert.ToString(mydrv["家庭住址"]);
                    GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
                }
            } 

    调用的方法:

        public string SubStr(string sString, int nLeng)
        {
            if (sString.Length <= nLeng)
            {
                return sString;
            }
            string sNewStr = sString.Substring(0, nLeng);
            sNewStr = sNewStr + "...";
            return sNewStr;
        }

    后台全部代码:
    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;

    public partial class _Default : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        SqlCommand sqlcom;
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                ViewState["SortOrder"] = "身份证号码";
                ViewState["OrderDire"] = "ASC";
                bind();
            }
        }
        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
            bind();
        }
        protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcon = new SqlConnection(strCon);
            sqlcom = new SqlCommand(sqlstr,sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            bind();
        }
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            sqlcon = new SqlConnection(strCon);
            string sqlstr = "update 飞狐工作室 set 姓名='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
                + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcom=new SqlCommand(sqlstr,sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            GridView1.EditIndex = -1;
            bind();
        }
        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView1.EditIndex = -1;
            bind();
        }
        public void bind()
        {
            string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                DataRowView mydrv;
                string gIntro;
                if (GridView1.PageIndex == 0)
                {
                    mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
                    gIntro = Convert.ToString(mydrv["家庭住址"]);
                    GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
                }
                else
                {
                    mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
                    gIntro = Convert.ToString(mydrv["家庭住址"]);
                    GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
                }
            }
           
            sqlcon.Close();
        }
        public string SubStr(string sString, int nLeng)
        {
            if (sString.Length <= nLeng)
            {
                return sString;
            }
            string sNewStr = sString.Substring(0, nLeng);
            sNewStr = sNewStr + "...";
            return sNewStr;
        }
        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            //如果是绑定数据行 
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                ////鼠标经过时,行背景色变
                //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
                ////鼠标移出时,行背景色变
                //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

                ////当有编辑列时,避免出错,要加的RowState判断
                //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
                //{
                //    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除:\"" + e.Row.Cells[1].Text + "\"吗?')");
                //}

            }
            if (e.Row.RowIndex != -1)
            {
                int id = e.Row.RowIndex + 1;
                e.Row.Cells[0].Text = id.ToString();
            }

        }
    }

     11.GridView一般换行与强制换行:

    效果图:

    首先设置<asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  ItemStyle-Width="100" />
    gridview里有一列绑定的数据很长,显示的时候在一行里面显示,页面拉得很宽。
    原因是连续英文段为一个整体导致的,在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就可以。

    如果要给所有的列增加此属性:
     protected void Page_Load(object sender, EventArgs e)
        {
            //正常换行
            GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
            //下面这行是自动换行
            GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
            if (!IsPostBack)
            {
                 bind();//调用数据绑定即可
            }
        }
    总之:善用CSS的word-break:break-all;word-wrap:break-word属性即可,这个属性是通用的对于顽固的南换行问题都可以解决,不局限于GridView。

     12.GridView显示隐藏某一列:
    本方案为月儿独创,不同于网上其他方式,我觉得用一个CheckBox更人性化,这样可以隐藏不必要的列,让用户自己选择需要出现的列,在处理多列时这是一个很好的解决方案!

    效果图:
    图1-开始

    图2-点击显示的CheckBox后

    解决方案:
    public void bind()
        {
            string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            sqlcon.Close();
            GridView1.Columns[3].Visible = false;//一开始隐藏
            CheckBox1.Checked = false;//如果不这样后面的代码会把他True

        }

    双击CheckBox1,在CheckedChanged方法里写上代码,最后代码如下:
    protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
        {
             GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
             Response.Write("GridView1的第4列现在的显示隐藏状态是:"+GridView1.Columns[3].Visible.ToString());
        }

    注意:CheckBox1的AutoPostBack要True

    后台全部代码如下:

    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;

    public partial class _Default : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        SqlCommand sqlcom; 
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                ViewState["SortOrder"] = "身份证号码";
                ViewState["OrderDire"] = "ASC";
                bind();
                       }
        }
        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
            bind();
        }
        protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcon = new SqlConnection(strCon);
            sqlcom = new SqlCommand(sqlstr,sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            bind();
        }
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            sqlcon = new SqlConnection(strCon);
            string sqlstr = "update 飞狐工作室 set 姓名='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
                + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcom=new SqlCommand(sqlstr,sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            GridView1.EditIndex = -1;
            bind();
        }
        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView1.EditIndex = -1;
            bind();
        }
        public void bind()
        {
            string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            sqlcon.Close();
            GridView1.Columns[3].Visible = false;
            CheckBox1.Checked = false;
        }
        protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
        {
             GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
             Response.Write("GridView1的第4列现在的显示隐藏状态是:"+GridView1.Columns[3].Visible.ToString());
        }
    }

    前台代码:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
        <title>GridView显示隐藏列 清清月儿http://blog.csdn.net/21aspnet </title>
    </head>
    <body style="font-size=12px">
        <form id="form1" runat="server">
        <div>
                       <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
                                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                                <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                                <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                                <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>
            <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" Font-Size="12px"
                OnCheckedChanged="CheckBox1_CheckedChanged" Text="显示隐藏家庭住址" /></div>
        </form>
    </body>
    </html>

     13.GridView弹出新页面/弹出制定大小位置新窗口:

    效果图:

    方案一:简单的方法,新窗口不固定大小
     <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                                <asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >
                        </asp:HyperLinkField>
                                <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                                <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                                <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>
    DataNavigateUrlFields是链接的字段名,DataNavigateUrlFormatString是路径。

    方案二:精确控制弹出窗口大小位置
    <asp:HyperLinkColumn DataNavigateUrlField="EmployeeID" DataNavigateUrlFormatString="javascript:varwin=window.open('detail.aspx?ID={0}',null,'width=300,height=200');window.Close();"
           DataTextField="LastName" HeaderText="LastName"></asp:HyperLinkColumn>

    使用的是结合javascript的window.open方法,关于window.open的参数网上有很多帖子,本站也有许多参考
    弹出窗口大全 http://blog.csdn.net/21aspnet/archive/2004/10/25/150231.aspx   即可!

      14.GridView固定表头(不用javascript只用CSS!,很好用)

    效果图:

    代码:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
        <title>GridView固定表头 清清月儿http://blog.csdn.net/21aspnet </title>
            <style>
    .Freezing
       {
       
       position:relative ;
       table-layout:fixed;
       top:expression(this.offsetParent.scrollTop);  
       z-index: 10;
       }

    .Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;}
    </style>
    </head>
    <body style="font-size=12px">
        <form id="form1" runat="server">
        <div style="overflow-y: scroll; height: 200px;300px" id="dvBody">
                       <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                                <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                               
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="Freezing"/>
                        </asp:GridView>
            </div>

        </form>
    </body>
    </html>

    用法:CSS设如上的样式,HeaderStyle加CssClass="Freezing,套住GridView的Div设置高度宽度 <div style="overflow-y: scroll; height: 200px;200px" >

    15.GridView合并表头多重表头无错完美版(以合并3列3行举例)

    效果图:


    后台代码:
    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;
    using System.Drawing;
    public partial class _Default : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        SqlCommand sqlcom;
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();
               
            }
        }
        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
            bind();
        }
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            sqlcon = new SqlConnection(strCon);
            string sqlstr = "update 飞狐工作室 set 姓名='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
                + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcom=new SqlCommand(sqlstr,sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            GridView1.EditIndex = -1;
            bind();
        }
        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView1.EditIndex = -1;
            bind();
        }
        public void bind()
        {
            string sqlstr = "select top 10 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            sqlcon.Close();
        }

    //这里就是解决方案
        protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
        {
            switch (e.Row.RowType)
            {
                case DataControlRowType.Header:
                    //第一行表头
                    TableCellCollection tcHeader = e.Row.Cells;
                    tcHeader.Clear();
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[0].Attributes.Add("rowspan", "3"); //跨Row
                    tcHeader[0].Attributes.Add("bgcolor", "white");
                    tcHeader[0].Text = "";
                    tcHeader.Add(new TableHeaderCell());
                    //tcHeader[1].Attributes.Add("bgcolor", "Red");
                    tcHeader[1].Attributes.Add("colspan", "6"); //跨Column
                    tcHeader[1].Text = "全部信息</th></tr><tr>";

                    //第二行表头
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[2].Attributes.Add("bgcolor", "DarkSeaGreen");
                    tcHeader[2].Text = "身份证号码";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[3].Attributes.Add("bgcolor", "LightSteelBlue");
                    tcHeader[3].Attributes.Add("colspan", "2");
                    tcHeader[3].Text = "基本信息";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[4].Attributes.Add("bgcolor", "DarkSeaGreen");
                    tcHeader[4].Text = "福利";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[5].Attributes.Add("bgcolor", "LightSteelBlue");
                    tcHeader[5].Attributes.Add("colspan", "2");
                    tcHeader[5].Text = "联系方式</th></tr><tr>";

                    //第三行表头
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[6].Attributes.Add("bgcolor", "Khaki");
                    tcHeader[6].Text = "身份证号码";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[7].Attributes.Add("bgcolor", "Khaki");
                    tcHeader[7].Text = "姓名";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[8].Attributes.Add("bgcolor", "Khaki");
                    tcHeader[8].Text = "出生日期";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[9].Attributes.Add("bgcolor", "Khaki");
                    tcHeader[9].Text = "薪水";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[10].Attributes.Add("bgcolor", "Khaki");
                    tcHeader[10].Text = "家庭住址";
                    tcHeader.Add(new TableHeaderCell());
                    tcHeader[11].Attributes.Add("bgcolor", "Khaki");
                    tcHeader[11].Text = "邮政编码";
                    break;
            }
        }
    }

    前台:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
        <title>GridView合并多重表头表头 清清月儿http://blog.csdn.net/21aspnet </title>
    </head>
    <body >
        <form id="form1" runat="server">
        <div  >
                       <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                                <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
                                 <asp:BoundField DataField="起薪" HeaderText="起薪"  />
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
                              
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>
            </div>

        </form>
    </body>
    </html>

    16.GridView突出显示某一单元格(例如金额低于多少,分数不及格等)

    效果图:

    解决方案:主要是绑定后过滤
     GridView1.DataBind();
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
                string score = Convert.ToString(mydrv["起薪"]);
                if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等
                {
                    GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;
                }
            }
            sqlcon.Close();

    全部后台代码:

    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;
    using System.Drawing;

    public partial class Default7 : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        SqlCommand sqlcom;
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();

            }
        }
        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
            bind();
        }
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            sqlcon = new SqlConnection(strCon);
            string sqlstr = "update 飞狐工作室 set 姓名='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
                + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcom = new SqlCommand(sqlstr, sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            GridView1.EditIndex = -1;
            bind();
        }
        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView1.EditIndex = -1;
            bind();
        }
        public void bind()
        {
            string sqlstr = "select top 10 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
                string score = Convert.ToString(mydrv["起薪"]);
                if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等

                {
                    GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;
                }
            }
            sqlcon.Close();
        }
    }

    前台代码:

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head id="Head1" runat="server">
        <title>GridView突出显示某一单元格 清清月儿http://blog.csdn.net/21aspnet </title>
    </head>
    <body >
        <form id="form1" runat="server">
        <div  >
                       <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                                <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
                                 <asp:BoundField DataField="起薪" HeaderText="起薪"  DataFormatString="{0:C}" HtmlEncode="false"/>
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
                              
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>
            </div>

        </form>
    </body>
    </html>

     17.GridView加入自动求和求平均值小计

    效果图:
    解决方案:    
    private double sum = 0;//取指定列的数据和,你要根据具体情况对待可能你要处理的是int
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
           
            if (e.Row.RowIndex >= 0)
            {
                sum += Convert.ToDouble(e.Row.Cells[6].Text);
            }
            else if (e.Row.RowType == DataControlRowType.Footer)
            {
                e.Row.Cells[5].Text = "总薪水为:";
                e.Row.Cells[6].Text = sum.ToString();
                e.Row.Cells[3].Text = "平均薪水为:";
                e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
               
            }
        }

    后台全部代码:
    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;
    using System.Drawing;

    public partial class Default7 : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        SqlCommand sqlcom;
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();

            }
        }
        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
            bind();
        }
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            sqlcon = new SqlConnection(strCon);
            string sqlstr = "update 飞狐工作室 set 姓名='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
                + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
                + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            sqlcom = new SqlCommand(sqlstr, sqlcon);
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();
            sqlcon.Close();
            GridView1.EditIndex = -1;
            bind();
        }
        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView1.EditIndex = -1;
            bind();
        }
        public void bind()
        {
            string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            sqlcon.Close();
        }
        private double sum = 0;//取指定列的数据和
        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
           
            if (e.Row.RowIndex >= 0)
            {
                sum += Convert.ToDouble(e.Row.Cells[6].Text);
            }
            else if (e.Row.RowType == DataControlRowType.Footer)
            {
                e.Row.Cells[5].Text = "总薪水为:";
                e.Row.Cells[6].Text = sum.ToString();
                e.Row.Cells[3].Text = "平均薪水为:";
                e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
               
            }
        }
    }
    前台:唯一的花头就是设置ShowFooter="True" ,否则默认表头为隐藏的!
    <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  OnRowEditing="GridView1_RowEditing"
                            OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True"  >
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                                <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
                                <asp:BoundField DataField="起薪" HeaderText="起薪"  />
                              
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>

     18.GridView数据导入Excel/Excel数据读入GridView

    效果图:

    解决方案:
    页面增加一个按钮,单击事件添加如下方法:
    protected void Button1_Click(object sender, EventArgs e)
        {
            Export("application/ms-excel", "学生成绩报表.xls");
        }

        private void Export(string FileType, string FileName)
        {
            Response.Charset = "GB2312";
            Response.ContentEncoding = System.Text.Encoding.UTF7;
            Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
            Response.ContentType = FileType;
            this.EnableViewState = false;
            StringWriter tw = new StringWriter();
            HtmlTextWriter hw = new HtmlTextWriter(tw);
            GridView1.RenderControl(hw);
            Response.Write(tw.ToString());
            Response.End();
        }
    //如果没有下面方法会报错类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内
       
    public override void VerifyRenderingInServerForm(Control control)
        {
        }
    还有由于是文件操作所以要引入名称空间IO和Text

    后台代码:
    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;
    using System.Drawing;
    using System.IO;
    using System.Text;
    public partial class Default7 : System.Web.UI.Page
    {
        SqlConnection sqlcon;
        SqlCommand sqlcom;
        string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();

            }
        }
       
        public void bind()
        {
            string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataKeyNames = new string[] { "身份证号码" };
            GridView1.DataBind();
            sqlcon.Close();
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            Export("application/ms-excel", "学生成绩报表.xls");
        }

        private void Export(string FileType, string FileName)
        {
            Response.Charset = "GB2312";
            Response.ContentEncoding = System.Text.Encoding.UTF7;
            Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
            Response.ContentType = FileType;
            this.EnableViewState = false;
            StringWriter tw = new StringWriter();
            HtmlTextWriter hw = new HtmlTextWriter(tw);
            GridView1.RenderControl(hw);
            Response.Write(tw.ToString());
            Response.End();
        }
        public override void VerifyRenderingInServerForm(Control control)
        {
        }
       
    }

    前台
    <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3" 
                             BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"   >
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <Columns>
                                <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                                <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                                <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
                                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
                                <asp:BoundField DataField="起薪" HeaderText="起薪"  />
                              
                            </Columns>
                            <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                        </asp:GridView>
            <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="导出" />

    读取Excel数据的代码:这个很简单的
    private DataSet CreateDataSource()
        {
            string strCon;
            strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;";
            OleDbConnection olecon = new OleDbConnection(strCon);
            OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon);
            DataSet myds = new DataSet();
            myda.Fill(myds);
            return myds;
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            GridView1.DataSource = CreateDataSource();
            GridView1.DataBind();
        }

    由于时间关系,这个文章先到此。有时间再写,其实还有很多技巧,不过我觉得如果能融汇贯通应该可以举一反三

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  • 原文地址:https://www.cnblogs.com/0754ydj/p/1276307.html
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