<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>CheckBoxTest</title>
</head>
<body>
<form ID="Form1" runat="server">
<div>
Choose your favorite programming languages:<br /><br />
<asp:CheckBoxList ID="chklst" runat="server" AutoPostBack="true" OnSelectedIndexChanged="chklst_OnSelectedIndexChanged" /><br /><br />
<asp:Button ID="cmdOK" Text="OK" runat="server" OnClick="cmdOK_Click" />
<br /><br />
<asp:Label ID="lblResult" runat="server" />
</div>
</form>
</body>
</html>
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;
public partial class DropDownlist_Default : System.Web.UI.Page
{
protected void Page_Load(object sender, System.EventArgs e)
{
if (this.IsPostBack == false)
{
chklst.Items.Add("C");
chklst.Items.Add("C++");
chklst.Items.Add("C#");
chklst.Items.Add("Visual Basic 6.0");
chklst.Items.Add("VB.NET");
chklst.Items.Add("Pascal");
}
}
protected void chklst_OnSelectedIndexChanged(object sender, EventArgs e)
{
lblResult.Text = "You chose:<b>";
foreach (ListItem lstItem in chklst.Items)
{
if (lstItem.Selected == true)
{
// Add text to label.
lblResult.Text += "<br />" + lstItem.Text;
}
}
lblResult.Text += "</b>";
}
protected void cmdOK_Click(object sender, System.EventArgs e)
{
lblResult.Text = "You chose:<b>";
foreach (ListItem lstItem in chklst.Items)
{
if (lstItem.Selected == true)
{
// Add text to label.
lblResult.Text += "<br />" + lstItem.Text;
}
}
lblResult.Text += "</b>";
}
}
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