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  • DataGrid中加入CheckBox,并实现单选(C#,Asp.Net)

    <%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="DataGridCheck.WebForm1" %>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
    <HTML>
     <HEAD>
      <title>WebForm1</title>
      <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
      <meta content="C#" name="CODE_LANGUAGE">
      <meta content="JavaScript" name="vs_defaultClientScript">
      <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
      <SCRIPT language="JavaScript">
         function SetCheckBoxState()
         {
         var dom=document.all;
         var el=event.srcElement;
            if(el.tagName=="INPUT"&&el.type.toLowerCase()=="checkbox")
         {
      for(i=0;i<dom.length;i++)
      {
          if(dom[i].tagName=="INPUT"&&dom[i].type.toLowerCase()=="checkbox")
          {
       dom[i].checked=false;
          }
      }
         }
         el.checked=!el.checked;
            }
      </SCRIPT>
     </HEAD>
     <body MS_POSITIONING="GridLayout">
      <form id="Form1" method="post" runat="server">
       <FONT face="宋体">
        <asp:datagrid id="dg" style="Z-INDEX: 101; LEFT: 168px; POSITION: absolute; TOP: 40px" runat="server"
         Width="440px" AutoGenerateColumns="False">
         <Columns>
          <asp:TemplateColumn>
           <ItemTemplate>
            <asp:CheckBox id="chkExport" runat="server"></asp:CheckBox>
           </ItemTemplate>
          </asp:TemplateColumn>
          <asp:BoundColumn DataField="IntegerValue"></asp:BoundColumn>
          <asp:BoundColumn DataField="StringValue"></asp:BoundColumn>
          <asp:BoundColumn DataField="CurrencyValue"></asp:BoundColumn>
         </Columns>
        </asp:datagrid><asp:button id="Button1" style="Z-INDEX: 102; LEFT: 168px; POSITION: absolute; TOP: 8px" runat="server"
         Text="显示内容"></asp:button></FONT></form>
     </body>
    </HTML>
    以下是CS文件

    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Web;
    using System.Web.SessionState;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.HtmlControls;
    namespace DataGridCheck
    {
     /// <summary>
     /// WebForm1 的摘要说明。
     /// </summary>
     public class WebForm1 : System.Web.UI.Page
     {
      protected System.Web.UI.WebControls.Button Button1;
      protected System.Web.UI.WebControls.DataGrid dg;
     
      private void Page_Load(object sender, System.EventArgs e)
      {
       // 在此处放置用户代码以初始化页面
       if (!Page.IsPostBack)
       {
        dg.DataSource= CreateDataSource() ;
        dg.DataBind();  
       }
      
      
      }
      ICollection CreateDataSource()
      {
       DataTable dt = new DataTable();
       DataRow dr;
     
       dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
       dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
       dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
     
       for (int i = 0; i < 9; i++)
       {
        dr = dt.NewRow();
     
        dr[0] = i;
        dr[1] = "Item " + i.ToString();
        dr[2] = 1.23 * (i + 1);
     
        dt.Rows.Add(dr);
       }
     
       DataView dv = new DataView(dt);
       return dv;
      }


      #region Web 窗体设计器生成的代码
      override protected void OnInit(EventArgs e)
      {
       //
       // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
       //
       InitializeComponent();
       base.OnInit(e);
      }
     
      /// <summary>
      /// 设计器支持所需的方法 - 不要使用代码编辑器修改
      /// 此方法的内容。
      /// </summary>
      private void InitializeComponent()
      {   
       this.dg.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.dg_ItemDataBound);
       this.Button1.Click += new System.EventHandler(this.Button1_Click);
       this.Load += new System.EventHandler(this.Page_Load);

      }
      #endregion

      private void Button1_Click(object sender, System.EventArgs e)
      {
        System.Web.UI.WebControls.CheckBox chkExport;
       foreach (DataGridItem dgItem in dg.Items)
       {
        chkExport=(CheckBox)dgItem.FindControl("chkExport");
        if(chkExport.Checked)
        {
          Response.Write("<script>alert('"+dgItem.Cells[2].Text+"和"+dgItem.Cells[3].Text+"')</script>");
       
        }
       } 
      }

         private void dg_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
      {
       if(e.Item.ItemIndex<0)  return;
       if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
       {
         System.Web.UI.WebControls.CheckBox chkExport;
        chkExport=(CheckBox)e.Item.FindControl("chkExport");
        chkExport.Attributes.Add("OnClick","SetCheckBoxState()");
        e.Item.Attributes.Add("onmouseover","currentcolor=this.style.backgroundColor;this.style.backgroundColor='48d1cc'");
        e.Item.Attributes.Add("onmouseout","this.style.backgroundColor=currentcolor");
       }
      }

     }
    }

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  • 原文地址:https://www.cnblogs.com/no7dw/p/1533351.html
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