In this article I will explain you how to Select multiple item in Listbox control in asp.net using c#.
//Design Source Code
<%@ PageLanguage=”C#”AutoEventWireup=”true”CodeFile=”Default.aspx.cs”Inherits=”_Default”%>
<!DOCTYPE htmlPUBLIC “-//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>ListBox Example</title>
</head>
<body>
<form id=”form1″ runat=”server”>
<div>
<asp:ListBox id=”ListBox1″
Rows=”5″
width=”150px”
SelectionMode=”Multiple”
runat=”server”>
<asp:ListItem>ASP.Net </asp:ListItem>
<asp:ListItem>C# .Net </asp:ListItem>
<asp:ListItem>VB.Net </asp:ListItem>
<asp:ListItem>HTML </asp:ListItem>
<asp:ListItem>JAVA </asp:ListItem>
</asp:ListBox>
<asp:Button ID=”Button1″ runat=”server” onclick=”Button1_Click” Text=”Show” Width=”64px” />
<br/>
<br/>
<asp:Label ID=”Label1″ runat=”server”/>
</div>
</form>
</body>
</html>
//C# Source Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partialclass _Default: System.Web.UI.Page
{
protected voidPage_Load(object sender, EventArgs e)
{
}
protected voidButton1_Click(object sender, EventArgs e)
{
foreach (ListItemlv in ListBox1.Items)
{
if (lv.Selected)
{
Label1.Text += lv.Text +“<br/>”;
}
}
}
}
Hold the Control key when selecting multiple item in listbox
How to add list items from one listbox to another listbox with out duplication in any case.. please send me the logic