1. 前端HTML代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Index.aspx.cs" Inherits="Index" %> <!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>会员卡发布信息</title> </head> <body class="Font"> <form id="form1" runat="server"> <div style="text-align: left" align="left"><asp:Panel ID="Panel2" runat="server"> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowDataBound="GridView1_RowDataBound" OnSelectedIndexChanging="GridView1_SelectedIndexChanging" Font-Size="9pt" AllowPaging="True" EmptyDataText="没有相关数据可以显示！" OnPageIndexChanging="GridView1_PageIndexChanging" CellPadding="4" ForeColor="#333333" GridLines="None"> <Columns> <asp:TemplateField> <ItemTemplate> <asp:CheckBox ID="cbSingleOrMore" runat="server" /> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="cardNo" HeaderText="卡号" /> <asp:BoundField DataField="cardBound" HeaderText="内卡号" /> <asp:BoundField DataField="name" HeaderText="会员姓名" /> <asp:BoundField DataField="type" HeaderText="类型" /> <asp:BoundField DataField="createTime" HeaderText="创建时间" DataFormatString="{0:d}" /> <asp:BoundField DataField="stateBit" HeaderText="生效否" /> <asp:BoundField DataField="mobileID" HeaderText="机器码" /> </Columns> <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /> <RowStyle BackColor="#FFFBD6" ForeColor="#333333" /> <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" /> <PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Right" /> <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /> <AlternatingRowStyle BackColor="White" /> </asp:GridView> </asp:Panel> <asp:CheckBox ID="cbAll" runat="server" AutoPostBack="True" Font-Size="9pt" OnCheckedChanged="cbAll_CheckedChanged" Text="全选/反选" /> <asp:Button ID="btnDeleteMore" runat="server" Font-Size="9pt" Text="部分删除或全部删除" OnClick="btnDeleteMore_Click" onload="btnDeleteMore_Load" Width="134px" /> <asp:Button ID="btnRre" runat="server" Font-Size="9pt" Text="取消部分或全部选择" OnClick="btnRre_Click" Width="126px" /> <asp:Button ID="btnUpdateTime" runat="server" onclick="btnUpdateTime_Click" Text="更新发布时间" /> </div> </form> </body> </html>
2. 后台CS文件代码:
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 Index : System.Web.UI.Page { SqlConnection sqlcon; string strCon = "server=.;database=TYW;uid=sa;pwd=123.456;"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { this.GV_DataBind(); } } public void GV_DataBind() { string sqlstr = "select * from card "; sqlcon = new SqlConnection(strCon); SqlDataAdapter da = new SqlDataAdapter(sqlstr, sqlcon); DataSet ds = new DataSet(); sqlcon.Open(); da.Fill(ds, "card"); sqlcon.Close(); this.GridView1.DataSource = ds; //设置主键列, 作为后续操作(删除/更新/修改/查询)的重要依据, 可设置多列 this.GridView1.DataKeyNames = new string[] { "cardNo" }; this.GridView1.DataBind(); /*模拟GridView1.rows.count不大于0 this.GridView1.DataSource = null; this.GridView1.DataBind();*/ if (GridView1.Rows.Count > 0) { return;//有数据，不要处理 } else//显示表头并显示没有数据的提示信息 { StrHelper.GridViewHeader(GridView1); } } /*在创建gridView控件时,必须先为GridView的每一行创建一个GridViewRow对象,创建每一行时,将引发一个RowCreated事件；当行创建完毕，每一行GridViewRow就要绑定数据源中的数据,当绑定完成后,将引发RowDataBound事件.可以利用RowCreated事件来控制每一行绑定的控件,利用RowDataBound事件来控制每一行绑定的数据,也就是让数据如何呈现*/ protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //当鼠标经过时更换行的背景色 if (e.Row.RowType == DataControlRowType.DataRow)//判定当前的行是否属于datarow类型的行 { //当鼠标放上去的时候 先保存当前行的背景颜色 并给附一颜色 e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='#7f9edb',this.style.fontWeight='';"); //当鼠标离开的时候 将背景颜色还原的以前的颜色 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor,this.style.fontWeight='';"); } if (e.Row.RowType == DataControlRowType.DataRow) { string gIntro = e.Row.Cells[4].Text; e.Row.Cells[4].Text = StrHelper.GetFirstString(gIntro, 12);//如果字符串太长使用. . . 代替 } //内容提示为GridView第二行数据显示的内容，其索引值为1（注意：.NET中索引值都是从0开始） //((LinkButton)e.Row.Cells[8].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('确认要删除信息主题:"" + e.Row.Cells[1].Text + ""吗？')"); } /*SelectedIndexChanging 发生在单击某一行的“选择”按钮以后，GridView 控件对相应的选择操作进行处理之前。*/ protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e) { string id = this.GridView1.DataKeys[e.NewSelectedIndex].Value.ToString(); sqlcon = new SqlConnection(strCon); SqlCommand com = new SqlCommand("select [check] from card where cardNo='" + id + "'", sqlcon); sqlcon.Open(); string count = Convert.ToString(com.ExecuteScalar()); if (count == "False") { count = "1"; } else { count = "0"; } com.CommandText = "update card set [check]=" + count + " where cardNo=" + id; com.ExecuteNonQuery(); sqlcon.Close(); this.GV_DataBind(); } protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) { this.GridView1.PageIndex = e.NewPageIndex; this.GV_DataBind(); } //更改Checked protected void cbAll_CheckedChanged(object sender, EventArgs e) { for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("cbSingleOrMore"); if (cbAll.Checked == true) { cbox.Checked = true; } else { cbox.Checked = false; } } } //执行删除操作 protected void btnDeleteMore_Click(object sender, EventArgs e) { sqlcon = new SqlConnection(strCon);//创建数据库连接 SqlCommand sqlcom;//创建命令对象变量 for (int i = 0; i <= GridView1.Rows.Count - 1; i++)//循环遍历GridView控件每一项 { CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("cbSingleOrMore");//查找嵌套在GridView控件中的单选框 if (cbox.Checked == true)//如果操作为选中状态 { string strSql = "delete from card where cardNo=@id";//定义带参数的删除语句 if (sqlcon.State.Equals(ConnectionState.Closed)) sqlcon.Open();//打开数据加连接 sqlcom = new SqlCommand(strSql, sqlcon);//创建执行删除操作的命令对象 SqlTransaction tran = sqlcon.BeginTransaction();//实例化事务对象 sqlcom.Transaction = tran;//将事务对象与命令对象关联 SqlParameter prame = new SqlParameter("@id", SqlDbType.VarChar, 8);//定义参数 sqlcom.Parameters.Add(prame);//添加参数 sqlcom.Parameters["@id"].Value = GridView1.DataKeys[i].Value.ToString();//参数赋值 try { sqlcom.ExecuteNonQuery();//执行SQL语句 tran.Commit();//提交事务 } catch (SqlException ex) { StrHelper.Alert(string.Format("SQL语句发生了异常，异常如下所示: {0}", ex.Message)); tran.Rollback();//事务回滚 } finally { sqlcon.Close();//关闭数据库连接 } } } GV_DataBind();//重新绑定数据控件 } protected void btnRre_Click(object sender, EventArgs e) { cbAll.Checked = false; for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("cbSingleOrMore"); cbox.Checked = false; } } protected void btnDeleteMore_Load(object sender, EventArgs e) { //删除前进行提醒 ((Button)sender).Attributes["onclick"] = "return confirm('您确定要删除吗？')"; } //更新时间 protected void btnUpdateTime_Click(object sender, EventArgs e) { sqlcon = new SqlConnection(strCon);//创建数据库连接 SqlCommand sqlcom;//创建命令对象变量 for (int i = 0; i <= GridView1.Rows.Count - 1; i++)//循环遍历GridView控件每一项 { CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("cbSingleOrMore"); if (cbox.Checked == true) { string strSql = "Update card set createTime=@UpdateTime where cardNo=@id"; if (sqlcon.State.Equals(ConnectionState.Closed)) sqlcon.Open();//打开数据库连接 sqlcom = new SqlCommand(strSql, sqlcon); SqlParameter[] prams = {new SqlParameter("@UpdateTime",SqlDbType.DateTime), new SqlParameter("@id",SqlDbType.VarChar,32)}; prams[0].Value = DateTime.Now; prams[1].Value = GridView1.DataKeys[i].Value; foreach (SqlParameter parameter in prams) { sqlcom.Parameters.Add(parameter); } if (sqlcom.ExecuteNonQuery() > 0) { StrHelper.Alert("更新成功！"); } else { StrHelper.Alert("更新失败！"); } sqlcon.Close(); } } GV_DataBind(); } }
3. 工具类StrHelper代码:
1 using System; 2 using System.Data; 3 using System.Configuration; 4 using System.Linq; 5 using System.Web; 6 using System.Web.Security; 7 using System.Web.UI; 8 using System.Web.UI.HtmlControls; 9 using System.Web.UI.WebControls; 10 using System.Web.UI.WebControls.WebParts; 11 using System.Xml.Linq; 12 //引入如下命名空间 13 using System.Text.RegularExpressions; 14 using System.Text; 15 16 /// <summary> 17 ///StrHelper 的摘要说明 18 /// </summary> 19 public class StrHelper 20 { 21 public StrHelper(){} 22 /// <summary> 23 /// 截取字符串函数 24 /// </summary> 25 /// <param name="str">所要截取的字符串</param> 26 /// <param name="num">截取字符串的长度</param> 27 /// <returns></returns> 28 static public string GetSubString(string str, int num) 29 { 30 #region 31 return (str.Length > num) ? str.Substring(0, num) + "..." : str; 32 #endregion 33 } 34 /// <summary> 35 /// 截取字符串优化版 36 /// </summary> 37 /// <param name="stringToSub">所要截取的字符串</param> 38 /// <param name="length">截取字符串的长度</param> 39 /// <returns></returns> 40 public static string GetFirstString(string stringToSub, int length) 41 { 42 #region 43 Regex regex = new Regex("[u4e00-u9fa5]+", RegexOptions.Compiled); 44 char[] stringChar = stringToSub.ToCharArray(); 45 StringBuilder sb = new StringBuilder(); 46 int nLength = 0; 47 bool isCut = false; 48 for (int i = 0; i < stringChar.Length; i++) 49 { 50 if (regex.IsMatch((stringChar[i]).ToString()))//regex.IsMatch指示正则表达式在输入字符串中是否找到匹配项 51 { 52 sb.Append(stringChar[i]);//将信息追加到当前 StringBuilder 的结尾 53 nLength += 2; 54 } 55 else 56 { 57 sb.Append(stringChar[i]); 58 nLength = nLength + 1; 59 } 60 if (nLength > length)//替换字符串 61 { 62 isCut = true; 63 break; 64 } 65 } 66 if (isCut) 67 return sb.ToString() + "..."; 68 else 69 return sb.ToString(); 70 #endregion 71 } 72 /// 弹出JavaScript小窗口 73 /// </summary> 74 /// <param name="js">窗口信息</param> 75 public static void Alert(string message) 76 { 77 #region 78 string js = @"<Script language='JavaScript'> 79 alert('" + message + "');</Script>"; 80 HttpContext.Current.Response.Write(js); 81 82 #endregion 83 } 84 public static void GridViewHeader(GridView gdv)//显示表头并显示没有数据的提示信息 85 { 86 //表头的设置. 注意在呈现 GridView 控件之前,必须先为该控件中的每一行创建一个 GridViewRow 对象。 87 // 参数:-1 rowIndex:行号; -1 这个参数0也可以,-1 也可以,可能ASP.NET Framework并未用到此值,所以DataControlRowType枚举为Header,Footer都將此值設為-1; DataControlRowType 一个枚举, 枚举该行是数据行/导航行/分割行等; DataControlRowState枚举, 指示该行的状态可用值有正常状态/选定状态/编辑状态/新插入状态 88 GridViewRow row = new GridViewRow(-1, -1, DataControlRowType.EmptyDataRow, DataControlRowState.Normal); 89 foreach (DataControlField field in gdv.Columns) //本来有7列, 加上checkbox有8列 90 { 91 TableCell cell = new TableCell(); 92 cell.Text = field.HeaderText; 93 cell.Width = field.HeaderStyle.Width; 94 cell.Height = field.HeaderStyle.Height; 95 cell.ForeColor = field.HeaderStyle.ForeColor; 96 cell.Font.Size = field.HeaderStyle.Font.Size; 97 cell.Font.Bold = field.HeaderStyle.Font.Bold; 98 cell.Font.Name = field.HeaderStyle.Font.Name; 99 cell.Font.Strikeout = field.HeaderStyle.Font.Strikeout; 100 cell.Font.Underline = field.HeaderStyle.Font.Underline; 101 cell.BackColor = field.HeaderStyle.BackColor; 102 cell.VerticalAlign = field.HeaderStyle.VerticalAlign; 103 cell.HorizontalAlign = field.HeaderStyle.HorizontalAlign; 104 cell.CssClass = field.HeaderStyle.CssClass; 105 cell.BorderColor = field.HeaderStyle.BorderColor; 106 cell.BorderStyle = field.HeaderStyle.BorderStyle; 107 cell.BorderWidth = field.HeaderStyle.BorderWidth; 108 row.Cells.Add(cell);//将指定的单元格追加到行的末尾 109 } 110 TableItemStyle headStyle = gdv.HeaderStyle; 111 TableItemStyle emptyStyle = gdv.EmptyDataRowStyle; 112 emptyStyle.Width = headStyle.Width; 113 emptyStyle.Height = headStyle.Height; 114 emptyStyle.ForeColor = headStyle.ForeColor; 115 emptyStyle.Font.Size = headStyle.Font.Size; 116 emptyStyle.Font.Bold = headStyle.Font.Bold; 117 emptyStyle.Font.Name = headStyle.Font.Name; 118 emptyStyle.Font.Strikeout = headStyle.Font.Strikeout; 119 emptyStyle.Font.Underline = headStyle.Font.Underline; 120 emptyStyle.BackColor = headStyle.BackColor; 121 emptyStyle.VerticalAlign = headStyle.VerticalAlign; 122 emptyStyle.HorizontalAlign = headStyle.HorizontalAlign; 123 emptyStyle.CssClass = headStyle.CssClass; 124 emptyStyle.BorderColor = headStyle.BorderColor; 125 emptyStyle.BorderStyle = headStyle.BorderStyle; 126 emptyStyle.BorderWidth = headStyle.BorderWidth; 127 //空白行的设置 128 GridViewRow row1 = new GridViewRow(0, -1, DataControlRowType.EmptyDataRow, DataControlRowState.Normal); 129 TableCell cell1 = new TableCell(); 130 cell1.Text = "没有相关数据可以显示！"; 131 cell1.BackColor = System.Drawing.Color.White; 132 row1.Cells.Add(cell1); 133 cell1.ColumnSpan = 6;//合并列 134 if (gdv.Controls.Count == 0) 135 { 136 gdv.Page.Response.Write("<script language='javascript'>alert('必须在初始化表格类之前执行DataBind方法并设置EmptyDataText属性不为空!');</script>"); 137 } 138 else 139 { 140 gdv.Controls[0].Controls.Clear(); 141 gdv.Controls[0].Controls.AddAt(0, row); 142 gdv.Controls[0].Controls.AddAt(1, row1); 143 } 144 } 145 }
最终截图:
