<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Uncheck_check_list_Value._Default" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:CheckBoxList ID="CheckBoxList1" runat="server">
</asp:CheckBoxList>
<asp:Button ID="btn_Uncheck" runat="server" Text="Uncheck"
onclick="btn_Uncheck_Click" />
</div>
</form>
</body>
</html>
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
namespace Uncheck_check_list_Value
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
CheckBoxList1.Items.Add("a");
CheckBoxList1.Items.Add("b");
CheckBoxList1.Items.Add("c");
}
}
protected void btn_Uncheck_Click(object sender, EventArgs e)
{
for (int items = 0; items < CheckBoxList1.Items.Count; items++)
{
CheckBoxList1.ClearSelection();
}
}
}
}