---
title: "LIST BOX CONTROL EXAMPLE"
description: "LIST BOX CONTROL EXAMPLE"
author: "priya kapte"
published: 2014-11-15
updated: 2014-11-19
canonical: https://www.mindstick.com/forum/12596/list-box-control-example
category: "asp.net"
tags: ["listbox"]
reading_time: 9 minutes
---
# LIST BOX CONTROL EXAMPLE
in my [web page](https://www.mindstick.com/forum/718/sql-server-report-alignment-to-center-of-web-page) label having text"Enter text" after one [textBox](https://www.mindstick.com/forum/12714/dynamic-textbox-in-gridview) in next line two [radio button](https://www.mindstick.com/articles/12743/radio-button-in-android) having text Listbox1 and ListBox2,in next line one single button having text "add" then next line two [Listbox](https://www.mindstick.com/articles/626/listbox-events-in-c-dot-net) [controls](https://www.mindstick.com/articles/66/how-to-create-controls-at-run-time-in-csharp-dot-net) in between two listboes four button this is my [requirement](https://yourviews.mindstick.com/view/85169/becoming-an-influencer-requirement-of-skills-and-knowledge) please send [design](https://www.mindstick.com/articles/12279/interior-design-and-furniture-store-wordpress-theme) code and [code behind](https://www.mindstick.com/forum/2199/call-javascript-s-function-from-code-behind) code of this requirement but in first list box [control](https://www.mindstick.com/blog/197/asp-dot-net-repeater-control) no element [present](https://answers.mindstick.com/qa/96635/explain-about-the-various-features-present-in-ms-access) run time put the values in textbox........................
## Replies
### Reply by priya kapte
i want coding of this program sir, but without using java script functions .............................please give m reply....................
### Reply by priya kapte
Thanku sir,.............. but i am understand this coding ,you are using javascript function in source code and access in code view please send the code without using javascript function ............................\
### Reply by Sumit Kesarwani
Hi Priya, \
"Var" is an implicit type. It aliases any type. The aliased type is determined by the C# compiler. This has no performance penalty.\
You can use it if you want to else you have to change the "var" into the return type of the statement.
### Reply by priya kapte
thank you sir for sending source view and code view to me.................but why u are using client side scripting variable var in this program
### Reply by Sumit Kesarwani
Hi Priya, \
**UI Code :**\
```
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
```
\
**Server Side Code:****\**
```
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;public partial class _Default : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { } protected void btnAdd_Click(object sender, EventArgs e) { if (radiolist1.Checked) { var item = ListBox1.Items.FindByText(txtBox.Text); if (item == null) { var itemSelected = new ListItem(); itemSelected.Value = txtBox.Text; ListBox1.Items.Add(itemSelected); } else { ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", "alert('Item Already Exists!')", true); return; } } else { var item = ListBox2.Items.FindByText(txtBox.Text); if (item == null) { var itemSelected = new ListItem(); itemSelected.Value = txtBox.Text; ListBox2.Items.Add(itemSelected); } else { ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", "alert('Item Already Exists!')", true); return; } } } protected void btnLeft_Click(object sender, EventArgs e) { string item = ListBox1.SelectedValue.ToString(); ListBox2.Items.Add(item); ListBox1.Items.Remove(item); } protected void btnRight_Click(object sender, EventArgs e) { string item = ListBox2.SelectedValue.ToString(); var itemSelected = new ListItem(); itemSelected.Value = item.ToString(); ListBox1.Items.Add(itemSelected); ListBox2.Items.Remove(itemSelected); } protected void btnDoubleLeft_Click(object sender, EventArgs e) { if (ListBox1.Items != null) { foreach (var item in ListBox1.Items) { var itemCurrent = ListBox2.Items.FindByText(item.ToString()); var itemSelected = new ListItem(); itemSelected.Value = item.ToString(); if (itemCurrent == null) { ListBox2.Items.Add(itemSelected); ListBox1.Items.Remove(itemSelected); } } } } protected void btnDoubleRight_Click(object sender, EventArgs e) { if (ListBox2.Items != null) { foreach (var item in ListBox2.Items) { var itemCurrent = ListBox1.Items.FindByText(item.ToString()); var itemSelected = new ListItem(); itemSelected.Value = item.ToString(); if (itemCurrent == null) { ListBox1.Items.Add(itemSelected); ListBox2.Items.Remove(itemSelected); } } } }}
```
\
### Reply by priya kapte
thank u sir for sending m above source view .................but i am trying this type of code but how to create this web page by using table tags ........................\
### Reply by priya kapte
sir......In my code view when i am enter any text to the textbox after that select perticular radiobutton and then click on add button then those textbox item going in selected listbox but when i am not selecting radiobuuton then massege will be come "please select radiobutton" and when i am not enter any text to the textbox and directly click on radiobuuon then again massage will come "please enter text in textbox".........then i am selecting one by one items in listbox and then click on ">","<",">>","<<" buttons add in another listbox but doublicate text not allowed in listbox1 also and listbox2 also and when i am selecting perticular text in one listbox1 and click on given button those item go to next listbox and removed in first listbox this is my requirement .......................please send m reply thank you..
### Reply by Anonymous User
Hi priya\
try this code for designing part\
in this post uses bootstrap css for best design\
\
Bootstrap file\
\
\
and html code\
\
```
```
**Preview:**\
\
\
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Original Source: https://www.mindstick.com/forum/12596/list-box-control-example
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