In this blog we will know how to move items from one DropDownList to other one.
<%@ Page Language="C#" AutoEventWireup="true"
CodeFile="Default.aspx.cs"
Inherits="_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:DropDownList ID="DropDownList1"
runat="server">
</asp:DropDownList>
<asp:Button ID="Button1"
runat="server"
Text="<|"
onclick="Button1_Click"
/>
<asp:Button ID="Button2"
runat="server"
Text="|>"
onclick="Button2_Click"
/>
<asp:Button ID="Button3"
runat="server"
Text="<<|"
onclick="Button3_Click"
/>
<asp:Button ID="Button4"
runat="server"
Text="|>>"
onclick="Button4_Click"
/>
<asp:DropDownList ID="DropDownList2"
runat="server">
</asp:DropDownList>
</div>
</form>
</body>
</html>
using System;
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;
public partial
class _Default
: System.Web.UI.Page
{
protected void Page_Load(object
sender, EventArgs e)
{
if (!IsPostBack)
{
DropDownList1.Items.Add("Raj");
DropDownList1.Items.Add("Ravi");
DropDownList1.Items.Add("Rahul");
DropDownList1.Items.Add("Raju");
DropDownList1.Items.Add("Rohit");
DropDownList1.Items.Add("Rajesh");
}
}
protected void Button1_Click(object
sender, EventArgs e)
{
DropDownList1.Items.Add(DropDownList2.SelectedItem.Text);
int i = 0;
i = DropDownList2.SelectedIndex;
DropDownList2.Items.RemoveAt(i);
}
protected void Button2_Click(object
sender, EventArgs e)
{
DropDownList2.Items.Add(DropDownList1.SelectedItem.Text);
int i = 0;
i = DropDownList1.SelectedIndex;
DropDownList1.Items.RemoveAt(i);
}
protected void Button3_Click(object
sender, EventArgs e)
{
int j = 0;
for (j = 0; j <=
DropDownList2.Items.Count - 1; j++)
{
DropDownList1.Items.Add(DropDownList2.Items[j]);
}
DropDownList2.Items.Clear();
}
protected void Button4_Click(object
sender, EventArgs e)
{
int j = 0;
for (j = 0; j <=
DropDownList1.Items.Count - 1; j++)
{
DropDownList2.Items.Add(DropDownList1.Items[j]);
}
DropDownList1.Items.Clear();
}
}