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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>
<!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></title>
<script type="text/javascript">
var TotalChkBx;
var Counter;
window.onload = function()
{
//Get total no. of CheckBoxes in side the GridView.
TotalChkBx = parseInt('<%= this.gvCheckboxes.Rows.Count %>');
//Get total no. of checked CheckBoxes in side the GridView.
Counter = 0;
}
function HeaderClick(CheckBox)
{
//Get target base & child control.
var TargetBaseControl = document.getElementById('<%= this.gvCheckboxes.ClientID %>');
var TargetChildControl = "chkBxSelect";
//Get all the control of the type INPUT in the base control.
var Inputs = TargetBaseControl.getElementsByTagName("input");
//Checked/Unchecked all the checkBoxes in side the GridView.
for(var n = 0; n < Inputs.length; ++n)
if(Inputs[n].type == 'checkbox' && Inputs[n].id.indexOf(TargetChildControl,0) >= 0)
Inputs[n].checked = CheckBox.checked;
//Reset Counter
Counter = CheckBox.checked ? TotalChkBx : 0;
}
function ChildClick(CheckBox, HCheckBox)
{
//get target base & child control.
var HeaderCheckBox = document.getElementById(HCheckBox);
//Modifiy Counter;
if(CheckBox.checked && Counter < TotalChkBx)
Counter++;
else if(Counter > 0)
Counter--;
//Change state of the header CheckBox.
if(Counter < TotalChkBx)
HeaderCheckBox.checked = false;
else if(Counter == TotalChkBx)
HeaderCheckBox.checked = true;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="gvCheckboxes" runat="server" AutoGenerateColumns="False" OnRowCreated="gvCheckboxes_RowCreated">
<Columns>
<asp:BoundField HeaderText="S.N." DataField="sno">
<HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="50px" />
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="50px" />
</asp:BoundField>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:CheckBox ID="chkBxSelect" runat="server" />
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="50px" />
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="50px" />
<HeaderTemplate>
<asp:CheckBox ID="chkBxHeader" onclick="javascript:HeaderClick(this);" runat="server" />
</HeaderTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkBx" runat="server" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="50px" />
</asp:TemplateField>
</Columns>
<RowStyle BackColor="Moccasin" />
<AlternatingRowStyle BackColor="NavajoWhite" />
<HeaderStyle BackColor="DarkOrange" Font-Bold="True" ForeColor="White" />
</asp:GridView>
</form>
</body>
</html>
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Samir NIGAM is a Microsoft Certified Professional. He is an insightful IT professional with results-driven comprehensive technical skill having rich, hands-on work experience n web-based applications using ASP.NET, C#, AJAX, Web Service, WCF, jQuery, Microsoft Enterprise Library , LINQ, MS Entity Framework, nHibernate, MS SQL Server & SSRS.
He has earned his master degree (MCA) from U.P. Technical University, Lucknow, INDIA, his post graduate dipoma (PGDCA ) from Institute of Engineering and Rural Technology, Allahabad, INDIA and his bachelor degree (BSc - Mathematics) from University of Allahabad, Allahabad, INDIA.
He has good knowledge of Object Oriented Programming, n-Tier Architecture, SOLID Principle, and Algorithm Analysis & Design as well as good command over cross-browser client side programming using JavaScript & jQuery,.
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