The DataGrid was published for the first time and could not be written. Direct the original document to everyone to see forget!!
The principle is to use JS over all the checkbox to set all the checkbox is not selected, and then set the Click CheckBox to select
Here's the. aspx file
<%@ 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= "Song Body" >
<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= "Show content" ></asp:button></FONT></form>
</body>
</HTML>
The following is the CS file
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>
Summary description of the WebForm1.
</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)
{
Place user code here to initialize page
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;
}
Code generated #region the Web forms Designer
Override protected void OnInit (EventArgs e)
{
//
CodeGen: This call is required for the ASP.net Web forms Designer.
//
InitializeComponent ();
Base. OnInit (e);
}
<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</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+ "and" +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");
}
}
}
}
