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Asp.net中GridView使用详解

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1、GridView无代码分页排序

2、GridView选中，编辑，取消，删除

3、GridView正反双向排序

4、GridView和下拉菜单DropDownList结合

5、GridView和CheckBox结合

6、鼠标移到GridView某一行时改变该行的背景色方法一

7、鼠标移到GridView某一行时改变该行的背景色方法二

8、GridView实现删除时弹出确认对话框

9、GridView实现自动编号

10、GridView实现自定义时间货币等字符串格式

11、GridView实现用“...”代替超长字符串

12、GridView一般换行与强制换行

13、GridView显示隐藏某一列

14、GridView弹出新页面/弹出新窗口

15、GridView固定表头(不用javascript只用CSS，2行代码，很好用)

16、GridView合并表头多重表头无错完美版（以合并3列3行举例）

17、GridView突出显示某一单元格（例如金额低于多少，分数不及格等）

18、GridView加入自动求和求平均值小计

19、GridView数据导入Excel/Excel数据读入GridView

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正文

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1.GridView简单代码分页排序：

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。

4.添加代码:

1   protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
2 
3     {
4 
5         GridView1.PageIndex = e.NewPageIndex;
6 
7         Bind();
8 
9     }

2.GridView选中，编辑，取消，删除：

后台代码：

  1 using System;
  2 
  3 using System.Data;
  4 
  5 using System.Configuration;
  6 
  7 using System.Web;
  8 
  9 using System.Web.Security;
 10 
 11 using System.Web.UI;
 12 
 13 using System.Web.UI.WebControls;
 14 
 15 using System.Web.UI.WebControls.WebParts;
 16 
 17 using System.Web.UI.HtmlControls;
 18 
 19 using System.Data.SqlClient;
 20 
 21 public partial class _Default : System.Web.UI.Page
 22 
 23 {
 24 
 25     SqlConnection sqlcon;
 26 
 27     SqlCommand sqlcom;
 28 
 29     string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码";
 30 
 31     protected void Page_Load(object sender, EventArgs e)
 32 
 33     {
 34 
 35         if (!IsPostBack)
 36 
 37         {
 38 
 39             bind();
 40 
 41         }
 42 
 43     }
 44 
 45     protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
 46 
 47     {
 48 
 49         GridView1.EditIndex = e.NewEditIndex;
 50 
 51         bind();
 52 
 53     }
 54 
 55 //删除
 56 
 57     protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
 58 
 59     {
 60 
 61         string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
 62 
 63         sqlcon = new SqlConnection(strCon);
 64 
 65         sqlcom = new SqlCommand(sqlstr,sqlcon);
 66 
 67         sqlcon.Open();
 68 
 69         sqlcom.ExecuteNonQuery();
 70 
 71         sqlcon.Close();
 72 
 73         bind();
 74 
 75     }
 76 
 77 //更新
 78 
 79     protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
 80 
 81     {
 82 
 83         sqlcon = new SqlConnection(strCon);
 84 
 85         string sqlstr = "update 表 set 字段1='"
 86 
 87             + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"
 88 
 89             + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"
 90 
 91             + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"
 92 
 93             + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
 94 
 95         sqlcom=new SqlCommand(sqlstr,sqlcon);
 96 
 97         sqlcon.Open();
 98 
 99         sqlcom.ExecuteNonQuery();
100 
101         sqlcon.Close();
102 
103         GridView1.EditIndex = -1;
104 
105         bind();
106 
107     }
108 
109 //取消
110 
111     protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
112 
113     {
114 
115         GridView1.EditIndex = -1;
116 
117         bind();
118 
119     }
120 
121 //绑定
122 
123     public void bind()
124 
125     {
126 
127         string sqlstr = "select * from 表";
128 
129         sqlcon = new SqlConnection(strCon);
130 
131         SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
132 
133         DataSet myds = new DataSet();
134 
135         sqlcon.Open();
136 
137         myda.Fill(myds, "表");
138 
139         GridView1.DataSource = myds;
140 
141         GridView1.DataKeyNames = new string[] { "id" };//主键
142 
143         GridView1.DataBind();
144 
145         sqlcon.Close();
146 
147     }
148 
149 }

前台主要代码：

... ...

 1 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
 2 
 3                         ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
 4 
 5                         OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">
 6 
 7                         <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
 8 
 9                         <Columns>
10 
11                             <asp:BoundField DataField="身份证号码" HeaderText="用户ID" ReadOnly="True" />
12 
13                             <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
14 
15                             <asp:BoundField DataField="员工性别" HeaderText="性别" />
16 
17                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
18 
19                             <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
20 
21                             <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
22 
23                             <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
24 
25                         </Columns>
26 
27                         <RowStyle ForeColor="#000066" />
28 
29                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
30 
31                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
32 
33                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
34 
35                     </asp:GridView>

3.GridView正反双向排序：

后台代码：

  1 using System;
  2 
  3 using System.Data;
  4 
  5 using System.Configuration;
  6 
  7 using System.Collections;
  8 
  9 using System.Web;
 10 
 11 using System.Web.Security;
 12 
 13 using System.Web.UI;
 14 
 15 using System.Web.UI.WebControls;
 16 
 17 using System.Web.UI.WebControls.WebParts;
 18 
 19 using System.Web.UI.HtmlControls;
 20 
 21 using System.Data.SqlClient;
 22 
 23 public partial class Default3 : System.Web.UI.Page
 24 
 25 {    SqlConnection sqlcon;
 26 
 27     string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=";
 28 
 29     protected void Page_Load(object sender, EventArgs e)
 30 
 31     {
 32 
 33         if (!IsPostBack)
 34 
 35         {
 36 
 37             ViewState["SortOrder"] = "身份证号码";
 38 
 39             ViewState["OrderDire"] = "ASC";
 40 
 41             bind();
 42 
 43         }
 44 
 45     }
 46 
 47     protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
 48 
 49     {
 50 
 51         string sPage = e.SortExpression;
 52 
 53         if (ViewState["SortOrder"].ToString() == sPage)
 54 
 55         {
 56 
 57             if (ViewState["OrderDire"].ToString() == "Desc")
 58 
 59                 ViewState["OrderDire"] = "ASC";
 60 
 61             else
 62 
 63                 ViewState["OrderDire"] = "Desc";
 64 
 65         }
 66 
 67         else
 68 
 69         {
 70 
 71             ViewState["SortOrder"] = e.SortExpression;
 72 
 73         }
 74 
 75         bind();
 76 
 77     }
 78 
 79     public void bind()
 80 
 81     {
 82 
 83        
 84 
 85         string sqlstr = "select top 5 * from 飞狐工作室";
 86 
 87         sqlcon = new SqlConnection(strCon);
 88 
 89         SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
 90 
 91         DataSet myds = new DataSet();
 92 
 93         sqlcon.Open();
 94 
 95         myda.Fill(myds, "飞狐工作室");
 96 
 97         DataView view = myds.Tables["飞狐工作室"].DefaultView;
 98 
 99         string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];
100 
101         view.Sort = sort;
102 
103         GridView1.DataSource = view;
104 
105         GridView1.DataBind();
106 
107         sqlcon.Close();
108 
109     }
110 
111 }

前台主要代码：

 1 <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
 2 
 3                         CellPadding="3" Font-Size="12px" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
 4 
 5                         <FooterStyle BackColor="White" ForeColor="#000066" />
 6 
 7                         <Columns>
 8 
 9                              <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
10 
11                             <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
12 
13                             <asp:BoundField DataField="员工性别" HeaderText="性别" SortExpression="员工性别"/>
14 
15                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>                               
16 
17                         </Columns>
18 
19                         <RowStyle ForeColor="#000066" />
20 
21                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
22 
23                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
24 
25                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
26 
27                     </asp:GridView>

4.GridView和下拉菜单DropDownList结合：

后台代码：

  1 using System;
  2 
  3 using System.Data;
  4 
  5 using System.Configuration;
  6 
  7 using System.Collections;
  8 
  9 using System.Web;
 10 
 11 using System.Web.Security;
 12 
 13 using System.Web.UI;
 14 
 15 using System.Web.UI.WebControls;
 16 
 17 using System.Web.UI.WebControls.WebParts;
 18 
 19 using System.Web.UI.HtmlControls;
 20 
 21 using System.Data.SqlClient;
 22 
 23 public partial class Default4 : System.Web.UI.Page
 24 
 25 {
 26 
 27     SqlConnection sqlcon;
 28 
 29     string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
 30 
 31     protected void Page_Load(object sender, EventArgs e)
 32 
 33     {
 34 
 35         DropDownList ddl;
 36 
 37         if (!IsPostBack)
 38 
 39         {
 40 
 41             string sqlstr = "select top 5 * from 飞狐工作室";
 42 
 43             sqlcon = new SqlConnection(strCon);
 44 
 45             SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
 46 
 47             DataSet myds = new DataSet();
 48 
 49             sqlcon.Open();
 50 
 51             myda.Fill(myds, "飞狐工作室");
 52 
 53             GridView1.DataSource = myds;
 54 
 55             GridView1.DataBind();
 56 
 57             for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
 58 
 59             {
 60 
 61                 DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
 62 
 63                 if (Convert.ToString(mydrv["员工性别"]).Trim() == "True")
 64 
 65                 {
 66 
 67                     ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
 68 
 69                     ddl.SelectedIndex = 0;
 70 
 71                 }
 72 
 73                 if (Convert.ToString(mydrv["员工性别"]).Trim() == "False")
 74 
 75                 {
 76 
 77                     ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
 78 
 79                     ddl.SelectedIndex = 1;
 80 
 81                 }
 82 
 83             }
 84 
 85             sqlcon.Close();
 86 
 87         }
 88 
 89     }
 90 
 91     public SqlDataReader ddlbind()
 92 
 93     {
 94 
 95         string sqlstr = "select distinct 员工性别 from 飞狐工作室";
 96 
 97         sqlcon = new SqlConnection(strCon);
 98 
 99         SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);
100 
101         sqlcon.Open();
102 
103         return sqlcom.ExecuteReader();
104 
105     }

前台主要代码：

 1 <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
 2 
 3                         CellPadding="3" Font-Size="12px"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
 4 
 5                         <FooterStyle BackColor="White" ForeColor="#000066" />
 6 
 7                         <Columns>
 8 
 9                              <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
10 
11                             <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
12 
13                             <asp:TemplateField HeaderText="员工性别">
14 
15                                 <ItemTemplate>
16 
17                                     <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="员工性别" DataTextField="员工性别">
18 
19                                     </asp:DropDownList>
20 
21                                 </ItemTemplate>
22 
23                             </asp:TemplateField>
24 
25                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
26 
27                                
28 
29                         </Columns>
30 
31                         <RowStyle ForeColor="#000066" />
32 
33                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
34 
35                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
36 
37                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
38 
39                     </asp:GridView>

5.GridView和CheckBox结合：

后台代码：

  1 using System;
  2 
  3 using System.Data;
  4 
  5 using System.Configuration;
  6 
  7 using System.Web;
  8 
  9 using System.Web.Security;
 10 
 11 using System.Web.UI;
 12 
 13 using System.Web.UI.WebControls;
 14 
 15 using System.Web.UI.WebControls.WebParts;
 16 
 17 using System.Web.UI.HtmlControls;
 18 
 19 using System.Data.SqlClient;
 20 
 21 public partial class Default5 : System.Web.UI.Page
 22 
 23 {
 24 
 25     SqlConnection sqlcon;
 26 
 27     string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
 28 
 29     protected void Page_Load(object sender, EventArgs e)
 30 
 31     {
 32 
 33         if (!IsPostBack)
 34 
 35         {
 36 
 37             bind();
 38 
 39         }
 40 
 41     }
 42 
 43     protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
 44 
 45     {
 46 
 47         for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
 48 
 49         {
 50 
 51             CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
 52 
 53             if (CheckBox2.Checked == true)
 54 
 55             {
 56 
 57                 cbox.Checked = true;
 58 
 59             }
 60 
 61             else
 62 
 63             {
 64 
 65                 cbox.Checked = false;
 66 
 67             }
 68 
 69         }
 70 
 71     }
 72 
 73     protected void Button2_Click(object sender, EventArgs e)
 74 
 75     {
 76 
 77         sqlcon = new SqlConnection(strCon);
 78 
 79         SqlCommand sqlcom;
 80 
 81         for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
 82 
 83         {
 84 
 85             CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
 86 
 87             if (cbox.Checked == true)
 88 
 89             {
 90 
 91                 string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[i].Value + "'";
 92 
 93                 sqlcom = new SqlCommand(sqlstr, sqlcon);
 94 
 95                 sqlcon.Open();
 96 
 97                 sqlcom.ExecuteNonQuery();
 98 
 99                 sqlcon.Close();
100 
101             }
102 
103         }
104 
105         bind();
106 
107     }
108 
109     protected void Button1_Click(object sender, EventArgs e)
110 
111     {
112 
113         CheckBox2.Checked = false;
114 
115         for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
116 
117         {
118 
119             CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
120 
121             cbox.Checked = false;
122 
123         }
124 
125     }
126 
127     public void bind()
128 
129     {
130 
131         string sqlstr = "select top 5 * from 飞狐工作室";
132 
133         sqlcon = new SqlConnection(strCon);
134 
135         SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
136 
137         DataSet myds = new DataSet();
138 
139         sqlcon.Open();
140 
141         myda.Fill(myds, "tb_Member");
142 
143         GridView1.DataSource = myds;
144 
145         GridView1.DataKeyNames = new string[] { "身份证号码" };
146 
147         GridView1.DataBind();
148 
149         sqlcon.Close();
150 
151     }
152 
153 }

前台主要代码：

 1 <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
 2 
 3                         CellPadding="3" Font-Size="12px"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
 4 
 5                         <FooterStyle BackColor="White" ForeColor="#000066" />
 6 
 7                         <Columns>
 8 
 9                              <asp:TemplateField>
10 
11                                 <ItemTemplate>
12 
13                                     <asp:CheckBox ID="CheckBox1" runat="server" />
14 
15                                 </ItemTemplate>
16 
17                             </asp:TemplateField>
18 
19                              <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
20 
21                             <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
22 
23                            
24 
25                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
26 
27                                
28 
29                         </Columns>
30 
31                         <RowStyle ForeColor="#000066" />
32 
33                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
34 
35                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
36 
37                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
38 
39                     </asp:GridView>
40 
41                      <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="12px" OnCheckedChanged="CheckBox2_CheckedChanged"
42 
43                         Text="全选" />
44 
45                     <asp:Button ID="Button1" runat="server" Font-Size="12px" Text="取消" OnClick="Button1_Click" />
46 
47                     <asp:Button ID="Button2" runat="server" Font-Size="12px" 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：

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：

 1 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
 2 
 3     {
 4 
 5 　　　　//首先判断是否是数据行
 6 
 7             if (e.Row.RowType == DataControlRowType.DataRow)
 8 
 9             {
10 
11                 //当鼠标停留时更改背景色
12 
13                 e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
14 
15                 //当鼠标移开时还原背景色
16 
17                 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
18 
19             }
20 
21     }

前台代码：

 1 <html xmlns="http://www.w3.org/1999/xhtml" >
 2 
 3 <head runat="server">
 4 
 5     <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>
 6 
 7 </head>
 8 
 9 <body>
10 
11     <form id="form1" runat="server">
12 
13     <div>
14 
15         <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份证号码"
16 
17             DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
18 
19             <Columns>
20 
21                 <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />
22 
23                 <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
24 
25                 <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />
26 
27                 <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
28 
29             </Columns>
30 
31             <FooterStyle BackColor="White" ForeColor="#000066" />
32 
33             <RowStyle ForeColor="#000066" />
34 
35             <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
36 
37             <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
38 
39             <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
40 
41         </asp:GridView>
42 
43         <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"
44 
45             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>
46 
47    
48 
49     </div>
50 
51     </form>
52 
53 </body>
54 
55 </html>
56 
57

7.鼠标移到GridView某一行时改变该行的背景色方法二：

做法：和上面的一样就是代码不同

 1 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
 2 
 3     {
 4 
 5         //如果是绑定数据行
 6 
 7         if (e.Row.RowType == DataControlRowType.DataRow)
 8 
 9         {
10 
11             //鼠标经过时，行背景色变
12 
13             e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
14 
15             //鼠标移出时，行背景色变
16 
17             e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");
18 
19         }
20 
21     }

8.GridView实现删除时弹出确认对话框：

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：

 1  protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
 2 
 3     {
 4 
 5         //如果是绑定数据行
 6 
 7         if (e.Row.RowType == DataControlRowType.DataRow)
 8 
 9         {
10 
11              if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
12 
13             {
14 
15                 ((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?')");
16 
17             }
18 
19         }
20 
21     }

9.GridView实现自动编号：

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：

 1 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
 2 
 3     {
 4 
 5         if (e.Row.RowIndex != -1)
 6 
 7         {
 8 
 9             int id = e.Row.RowIndex + 1;
10 
11             e.Row.Cells[0].Text = id.ToString();
12 
13         }
14 
15     }

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。

 1 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
 2 
 3                         OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
 4 
 5                         <FooterStyle BackColor="White" ForeColor="#000066" />
 6 
 7                         <Columns>
 8 
 9                             <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
10 
11                             <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
12 
13                             <asp:BoundField DataField="员工性别" HeaderText="性别" />
14 
15                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
16 
17                             <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
18 
19                             <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
20 
21                             <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
22 
23                         </Columns>
24 
25                         <RowStyle ForeColor="#000066" />
26 
27                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
28 
29                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
30 
31                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
32 
33                     </asp:GridView>

10.GridView实现自定义时间货币等字符串格式：

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

1 <asp :BoundField DataField="CreationDate"
2 
3 DataFormatString="{0:M-dd-yyyy}"
4 
5 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、

 1 <asp :GridView ID="GridView1" runat="server">
 2 
 3 <columns>
 4 
 5 <asp :BoundField DataField="CreationDate"
 6 
 7 DataFormatString="{0:M-dd-yyyy}"
 8 
 9 HtmlEncode="false"
10 
11 HeaderText="CreationDate" />
12 
13 </columns>
14 
15 </asp>

将htmlencode设置为false即可

另外的解决方法为，使用模版列

 1 <asp :GridView ID="GridView3" runat="server" >
 2 
 3 <columns>
 4 
 5 <asp :TemplateField HeaderText="CreationDate" >
 6 
 7 <edititemtemplate>
 8 
 9 <asp :Label ID="Label1" runat="server"
10 
11 Text='<%# Eval("CreationDate", "{0:M-dd-yyyy}") %>'>
12 
13 </asp>
14 
15 </edititemtemplate>
16 
17 <itemtemplate>
18 
19 <asp :Label ID="Label1" runat="server"
20 
21 Text=’<%# Bind("CreationDate", "{0:M-dd-yyyy}") %>'>
22 
23 </asp>
24 
25 </itemtemplate>
26 
27 </asp>
28 
29 </columns>
30 
31 </asp>

前台代码：

 1 asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份证号码"
 2 
 3             DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
 4 
 5             <Columns>
 6 
 7                 <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />
 8 
 9                 <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
10 
11                 <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
12 
13                 <asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" />
14 
15                 <asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" />
16 
17             </Columns>
18 
19             <FooterStyle BackColor="White" ForeColor="#000066" />
20 
21             <RowStyle ForeColor="#000066" />
22 
23             <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
24 
25             <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
26 
27             <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
28 
29         </asp:GridView>
30 
31         <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"
32 
33             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：

解决方法：数据绑定后过滤每一行即可

 1 for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
 2 
 3         {
 4 
 5             DataRowView mydrv;
 6 
 7             string gIntro;
 8 
 9             if (GridView1.PageIndex == 0)
10 
11             {
12 
13                 mydrv = myds.Tables["飞狐工作室"].DefaultView[i];//表名
14 
15                 gIntro = Convert.ToString(mydrv["家庭住址"]);//所要处理的字段
16 
17                 GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
18 
19             }
20 
21             else
22 
23             {
24 
25                 mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
26 
27                 gIntro = Convert.ToString(mydrv["家庭住址"]);
28 
29                 GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
30 
31             }
32 
33         }

调用的方法：

 1  public string SubStr(string sString, int nLeng)
 2 
 3     {
 4 
 5         if (sString.Length <= nLeng)
 6 
 7         {
 8 
 9             return sString;
10 
11         }
12 
13         string sNewStr = sString.Substring(0, nLeng);
14 
15         sNewStr = sNewStr + "...";
16 
17         return sNewStr;
18 
19     }

12.GridView一般换行与强制换行：

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：

 1  protected void Page_Load(object sender, EventArgs e)
 2 
 3     {
 4 
 5         //正常换行
 6 
 7         GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
 8 
 9         //下面这行是自动换行
10 
11         GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
12 
13         if (!IsPostBack)
14 
15         {
16 
17              bind();//调用数据绑定即可
18 
19         }
20 
21     }

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。

13.GridView显示隐藏某一列：

解决方案：

 1 public void bind()
 2 
 3     {
 4 
 5         string sqlstr = "select top 5 * from 飞狐工作室";
 6 
 7         sqlcon = new SqlConnection(strCon);
 8 
 9         SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
10 
11         DataSet myds = new DataSet();
12 
13         sqlcon.Open();
14 
15         myda.Fill(myds, "飞狐工作室");
16 
17         GridView1.DataSource = myds;
18 
19         GridView1.DataKeyNames = new string[] { "身份证号码" };
20 
21         GridView1.DataBind();
22 
23         sqlcon.Close();
24 
25         GridView1.Columns[3].Visible = false;//一开始隐藏
26 
27         CheckBox1.Checked = false;//如果不这样后面的代码会把他True
28 
29     }

双击CheckBox1，在CheckedChanged方法里写上代码，最后代码如下：

1 protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
2 
3     {
4 
5          GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
6 
7          Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[3].Visible.ToString());
8 
9     }

注意：CheckBox1的AutoPostBack要True！

14.GridView弹出新页面：

 1 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
 2 
 3                         OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
 4 
 5                         <FooterStyle BackColor="White" ForeColor="#000066" />
 6 
 7                         <Columns>
 8 
 9                             <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
10 
11                             <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
12 
13                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
14 
15                             <asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >
16 
17                     </asp:HyperLinkField>
18 
19                             <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
20 
21                             <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
22 
23                             <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
24 
25                         </Columns>
26 
27                         <RowStyle ForeColor="#000066" />
28 
29                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
30 
31                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
32 
33                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
34 
35                     </asp:GridView>

DataNavigateUrlFields是链接的字段名，DataNavigateUrlFormatString是路径。

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

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" >

16.GridView合并表头多重表头无错完美版（以合并3列3行举例）

后台代码：

  1  protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
  2 
  3     {
  4 
  5         switch (e.Row.RowType)
  6 
  7         {
  8 
  9             case DataControlRowType.Header:
 10 
 11                 //第一行表头
 12 
 13                 TableCellCollection tcHeader = e.Row.Cells;
 14 
 15                 tcHeader.Clear();
 16 
 17                 tcHeader.Add(new TableHeaderCell());
 18 
 19                 tcHeader[0].Attributes.Add("rowspan", "3"); //跨Row
 20 
 21                 tcHeader[0].Attributes.Add("bgcolor", "white");
 22 
 23                 tcHeader[0].Text = "";
 24 
 25                 tcHeader.Add(new TableHeaderCell());
 26 
 27                 //tcHeader[1].Attributes.Add("bgcolor", "Red");
 28 
 29                 tcHeader[1].Attributes.Add("colspan", "6"); //跨Column
 30 
 31                 tcHeader[1].Text = "全部信息</th></tr><tr>";
 32 
 33                 //第二行表头
 34 
 35                 tcHeader.Add(new TableHeaderCell());
 36 
 37                 tcHeader[2].Attributes.Add("bgcolor", "DarkSeaGreen");
 38 
 39                 tcHeader[2].Text = "身份证号码";
 40 
 41                 tcHeader.Add(new TableHeaderCell());
 42 
 43                 tcHeader[3].Attributes.Add("bgcolor", "LightSteelBlue");
 44 
 45                 tcHeader[3].Attributes.Add("colspan", "2");
 46 
 47                 tcHeader[3].Text = "基本信息";
 48 
 49                 tcHeader.Add(new TableHeaderCell());
 50 
 51                 tcHeader[4].Attributes.Add("bgcolor", "DarkSeaGreen");
 52 
 53                 tcHeader[4].Text = "福利";
 54 
 55                 tcHeader.Add(new TableHeaderCell());
 56 
 57                 tcHeader[5].Attributes.Add("bgcolor", "LightSteelBlue");
 58 
 59                 tcHeader[5].Attributes.Add("colspan", "2");
 60 
 61                 tcHeader[5].Text = "联系方式</th></tr><tr>";
 62 
 63                 //第三行表头
 64 
 65                 tcHeader.Add(new TableHeaderCell());
 66 
 67                 tcHeader[6].Attributes.Add("bgcolor", "Khaki");
 68 
 69                 tcHeader[6].Text = "身份证号码";
 70 
 71                 tcHeader.Add(new TableHeaderCell());
 72 
 73                 tcHeader[7].Attributes.Add("bgcolor", "Khaki");
 74 
 75                 tcHeader[7].Text = "姓名";
 76 
 77                 tcHeader.Add(new TableHeaderCell());
 78 
 79                 tcHeader[8].Attributes.Add("bgcolor", "Khaki");
 80 
 81                 tcHeader[8].Text = "出生日期";
 82 
 83                 tcHeader.Add(new TableHeaderCell());
 84 
 85                 tcHeader[9].Attributes.Add("bgcolor", "Khaki");
 86 
 87                 tcHeader[9].Text = "薪水";
 88 
 89                 tcHeader.Add(new TableHeaderCell());
 90 
 91                 tcHeader[10].Attributes.Add("bgcolor", "Khaki");
 92 
 93                 tcHeader[10].Text = "家庭住址";
 94 
 95                 tcHeader.Add(new TableHeaderCell());
 96 
 97                 tcHeader[11].Attributes.Add("bgcolor", "Khaki");
 98 
 99                 tcHeader[11].Text = "邮政编码";
100 
101                 break;
102 
103         }
104 
105     }
106 
107 }

前台：

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 
 3 <html xmlns="http://www.w3.org/1999/xhtml" >
 4 
 5 <head runat="server">
 6 
 7     <title>GridView合并多重表头表头 清清月儿http://blog.csdn.net/21aspnet </title>
 8 
 9 </head>
10 
11 <body >
12 
13     <form id="form1" runat="server">
14 
15     <div  >
16 
17                    <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3" OnRowEditing="GridView1_RowEditing"
18 
19                         OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >
20 
21                         <FooterStyle BackColor="White" ForeColor="#000066" />
22 
23                         <Columns>
24 
25                             <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
26 
27                             <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
28 
29                             <asp:BoundField DataField="姓名" HeaderText="姓名"  />
30 
31                             <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
32 
33                              <asp:BoundField DataField="起薪" HeaderText="起薪"  />
34 
35                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
36 
37                             <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
38 
39                           
40 
41                         </Columns>
42 
43                         <RowStyle ForeColor="#000066" />
44 
45                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
46 
47                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
48 
49                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
50 
51                     </asp:GridView>
52 
53         </div>
54 
55     </form>
56 
57 </body>
58 
59 </html>

17.GridView突出显示某一单元格（例如金额低于多少，分数不及格等）

解决方案：主要是绑定后过滤

 1 GridView1.DataBind();
 2 
 3         for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
 4 
 5         {
 6 
 7             DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
 8 
 9             string score = Convert.ToString(mydrv["起薪"]);
10 
11             if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等
12 
13             {
14 
15                 GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;
16 
17             }
18 
19         }
20 
21         sqlcon.Close();

前台代码：

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 
 3 <html xmlns="http://www.w3.org/1999/xhtml" >
 4 
 5 <head id="Head1" runat="server">
 6 
 7     <title>GridView突出显示某一单元格 清清月儿http://blog.csdn.net/21aspnet </title>
 8 
 9 </head>
10 
11 <body >
12 
13     <form id="form1" runat="server">
14 
15     <div  >
16 
17                    <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3" OnRowEditing="GridView1_RowEditing"
18 
19                         OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
20 
21                         <FooterStyle BackColor="White" ForeColor="#000066" />
22 
23                         <Columns>
24 
25                             <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
26 
27                             <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
28 
29                             <asp:BoundField DataField="姓名" HeaderText="姓名"  />
30 
31                             <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
32 
33                              <asp:BoundField DataField="起薪" HeaderText="起薪"  DataFormatString="{0:C}" HtmlEncode="false"/>
34 
35                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
36 
37                             <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
38 
39                           
40 
41                         </Columns>
42 
43                         <RowStyle ForeColor="#000066" />
44 
45                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
46 
47                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
48 
49                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
50 
51                     </asp:GridView>
52 
53         </div>
54 
55     </form>
56 
57 </body>
58 
59 </html>

18.GridView加入自动求和求平均值小计

解决方案：

 1 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
 2 
 3 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
 4 
 5     {
 6 
 7        
 8 
 9         if (e.Row.RowIndex >= 0)
10 
11         {
12 
13             sum += Convert.ToDouble(e.Row.Cells[6].Text);
14 
15         }
16 
17         else if (e.Row.RowType == DataControlRowType.Footer)
18 
19         {
20 
21             e.Row.Cells[5].Text = "总薪水为：";
22 
23             e.Row.Cells[6].Text = sum.ToString();
24 
25             e.Row.Cells[3].Text = "平均薪水为：";
26 
27             e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
28 
29            
30 
31         }
32 
33     }

前台：唯一的花头就是设置ShowFooter="True" ，否则默认表头为隐藏的！

 1 <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  OnRowEditing="GridView1_RowEditing"
 2 
 3                         OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True"  >
 4 
 5                         <FooterStyle BackColor="White" ForeColor="#000066" />
 6 
 7                         <Columns>
 8 
 9                             <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
10 
11                             <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
12 
13                             <asp:BoundField DataField="姓名" HeaderText="姓名"  />
14 
15                             <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
16 
17                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
18 
19                             <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
20 
21                             <asp:BoundField DataField="起薪" HeaderText="起薪"  />
22 
23                           
24 
25                         </Columns>
26 
27                         <RowStyle ForeColor="#000066" />
28 
29                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
30 
31                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
32 
33                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
34 
35                     </asp:GridView>

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

解决方案：

页面增加一个按钮，单击事件添加如下方法：

 1 protected void Button1_Click(object sender, EventArgs e)
 2 
 3     {
 4 
 5         Export("application/ms-excel", "学生成绩报表.xls");
 6 
 7     }
 8 
 9     private void Export(string FileType, string FileName)
10 
11     {
12 
13         Response.Charset = "GB2312";
14 
15         Response.ContentEncoding = System.Text.Encoding.UTF7;
16 
17         Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
18 
19         Response.ContentType = FileType;
20 
21         this.EnableViewState = false;
22 
23         StringWriter tw = new StringWriter();
24 
25         HtmlTextWriter hw = new HtmlTextWriter(tw);
26 
27         GridView1.RenderControl(hw);
28 
29         Response.Write(tw.ToString());
30 
31         Response.End();
32 
33     }
34 
35 //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
36 
37     public override void VerifyRenderingInServerForm(Control control)
38 
39     {
40 
41     }

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：

  1 using System;
  2 
  3 using System.Data;
  4 
  5 using System.Configuration;
  6 
  7 using System.Web;
  8 
  9 using System.Web.Security;
 10 
 11 using System.Web.UI;
 12 
 13 using System.Web.UI.WebControls;
 14 
 15 using System.Web.UI.WebControls.WebParts;
 16 
 17 using System.Web.UI.HtmlControls;
 18 
 19 using System.Data.SqlClient;
 20 
 21 using System.Drawing;
 22 
 23 using System.IO;
 24 
 25 using System.Text;
 26 
 27 public partial class Default7 : System.Web.UI.Page
 28 
 29 {
 30 
 31     SqlConnection sqlcon;
 32 
 33     SqlCommand sqlcom;
 34 
 35     string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
 36 
 37     protected void Page_Load(object sender, EventArgs e)
 38 
 39     {
 40 
 41         if (!IsPostBack)
 42 
 43         {
 44 
 45             bind();
 46 
 47         }
 48 
 49     }
 50 
 51    
 52 
 53     public void bind()
 54 
 55     {
 56 
 57         string sqlstr = "select top 5 * from 飞狐工作室";
 58 
 59         sqlcon = new SqlConnection(strCon);
 60 
 61         SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
 62 
 63         DataSet myds = new DataSet();
 64 
 65         sqlcon.Open();
 66 
 67         myda.Fill(myds, "飞狐工作室");
 68 
 69         GridView1.DataSource = myds;
 70 
 71         GridView1.DataKeyNames = new string[] { "身份证号码" };
 72 
 73         GridView1.DataBind();
 74 
 75         sqlcon.Close();
 76 
 77     }
 78 
 79     protected void Button1_Click(object sender, EventArgs e)
 80 
 81     {
 82 
 83         Export("application/ms-excel", "学生成绩报表.xls");
 84 
 85     }
 86 
 87     private void Export(string FileType, string FileName)
 88 
 89     {
 90 
 91         Response.Charset = "GB2312";
 92 
 93         Response.ContentEncoding = System.Text.Encoding.UTF7;
 94 
 95         Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
 96 
 97         Response.ContentType = FileType;
 98 
 99         this.EnableViewState = false;
100 
101         StringWriter tw = new StringWriter();
102 
103         HtmlTextWriter hw = new HtmlTextWriter(tw);
104 
105         GridView1.RenderControl(hw);
106 
107         Response.Write(tw.ToString());
108 
109         Response.End();
110 
111     }
112 
113     public override void VerifyRenderingInServerForm(Control control)
114 
115     {
116 
117     }
118 
119    
120 
121 }

前台：

 1 <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3" 
 2 
 3                          BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"   >
 4 
 5                         <FooterStyle BackColor="White" ForeColor="#000066" />
 6 
 7                         <Columns>
 8 
 9                             <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
10 
11                             <asp:BoundField DataField="姓名" HeaderText="姓名"  />
12 
13                             <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
14 
15                             <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
16 
17                             <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
18 
19                             <asp:BoundField DataField="起薪" HeaderText="起薪"  />
20 
21                           
22 
23                         </Columns>
24 
25                         <RowStyle ForeColor="#000066" />
26 
27                         <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
28 
29                         <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
30 
31                         <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
32 
33                     </asp:GridView>
34 
35         <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

 1 private DataSet CreateDataSource()
 2 
 3     {
 4 
 5         string strCon;
 6 
 7         strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;";
 8 
 9         OleDbConnection olecon = new OleDbConnection(strCon);
10 
11         OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon);
12 
13         DataSet myds = new DataSet();
14 
15         myda.Fill(myds);
16 
17         return myds;
18 
19     }
20 
21     protected void Button1_Click(object sender, EventArgs e)
22 
23     {
24 
25         GridView1.DataSource = CreateDataSource();
26 
27         GridView1.DataBind();
28 
29     }

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原文地址：https://www.cnblogs.com/tonyhere/p/6066234.html