In this post I’ll give to the demo of ListBox Control In ASP.Net 4.5
This post cover the code, which will transfer value from LIST A to LIST B and vice-verse, you can transfer single value at a time or all at once, so lest see the code..
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="listcontrol.aspx.cs" Inherits="listcontrol" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <h1>Transfer Value From One List Box To Another</h1> <table> <tr> <th> <asp:ListBox ID="listA" runat="server"> <asp:ListItem>ASP.Net</asp:ListItem> <asp:ListItem>PHP</asp:ListItem> <asp:ListItem>JAVA</asp:ListItem> <asp:ListItem>RUBY</asp:ListItem> <asp:ListItem>PEARL</asp:ListItem> <asp:ListItem>JavaScript</asp:ListItem> </asp:ListBox> </th> <td><asp:Button ID="listAtolistB" runat="server" Text=">" OnClick="listAtolistB_Click" /></td> <td><asp:Button ID="alllistAtolistB" runat="server" Text=">>" OnClick="alllistAtolistB_Click" /></td> <td><asp:Button ID="alllistBtolistA" runat="server" Text="<<" OnClick="alllistBtolistA_Click" style="width: 30px" /></td> <td><asp:Button ID="listBtolistA" runat="server" Text="<" OnClick="listBtolistA_Click" /></td> <th> <asp:ListBox ID="listB" runat="server"> </asp:ListBox> </th> </tr> </table> </div> </form> </body> </html>
Default.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class listcontrol : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void listAtolistB_Click(object sender, EventArgs e) { string a = listA.SelectedValue.ToString(); if (a == "" || a == null) { Response.Write("<script>alert('Please Select A Value To Transfer');</script>"); } else { listB.Items.Add(a); listA.Items.Remove(a); } } protected void alllistAtolistB_Click(object sender, EventArgs e) { foreach (ListItem ls in listA.Items) { listB.Items.Add(ls); } listA.Items.Clear(); } protected void listBtolistA_Click(object sender, EventArgs e) { string a = listB.SelectedValue.ToString(); if (a == "" || a == null) { Response.Write("<script>alert('Please Select A Value To Transfer');</script>"); } else { listA.Items.Add(a); listB.Items.Remove(a); } } protected void alllistBtolistA_Click(object sender, EventArgs e) { foreach (ListItem ls in listB.Items) { listA.Items.Add(ls); } listB.Items.Clear(); } }
This code as you can see is very simple, and easy to understand,
