---
title: "AJAX Control Toolkit: ListSearchExtender"  
description: "ListSearchExtender: The ListSearchExtender control extends either a ListBox or Dropdown Listbox. This extender allows you  to provide search capabilit"  
author: "Amit Singh"  
published: 2010-09-25  
updated: 2020-03-04  
canonical: https://www.mindstick.com/articles/141/ajax-control-toolkit-listsearchextender  
category: "ajax"  
tags: ["ajax"]  
reading_time: 1 minute  

---

# AJAX Control Toolkit: ListSearchExtender

ListSearchExtender: The ListSearchExtender control extends either a ListBox or Dropdown Listbox. This extender allows you to provide search capabilities through large collection that are located in either of these control. It have only on main properties TargetControlID.\

##### How we implement the Update Progress server control

**Step1:** we use the following control on aspx page

##### Example:

```
 <div> <%--Using ScriptManager or ToolkitScriptManager according toolkit version--%> <asp:ScriptManager   ID="ScriptManager1"runat="server"></asp:ScriptManager> <%-- add the ListSearchExtender and dropdownlistbox--%> <cc1:ListSearchExtender ID="ListSearchExtender1" runat="server" TargetControlID="ListBox1"> </cc1:ListSearchExtender>         <asp:ListBox ID="ListBox1" runat="server"> <asp:ListItem>ANDY</asp:ListItem> <asp:ListItem>CHRIS</asp:ListItem> <asp:ListItem>MARK</asp:ListItem> <asp:ListItem>SANDY</asp:ListItem> </asp:ListBox>        </div>
```

**Step3:** Run the project

Output:

![AJAX Control Toolkit: ListSearchExtender](https://www.mindstick.com/mindstickarticle/1ebc77cd-a3a3-4f78-b8d1-328fc2e2a60b/images/7470ec67-579b-47e7-af1b-a7dd04c6065d.png)

---

Original Source: https://www.mindstick.com/articles/141/ajax-control-toolkit-listsearchextender

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