Ajax a powerful script on the web, It provides you a lot more functionality to
improve your application Performance.
Here’s the article to show how to work with AutoCompleteExtender (Control in AjaxControlToolKIt).AutoComplete Description
- AutoComplete is an ASP.NET AJAX extender that can be attached to any TextBox control,
and will associate that control with a popup panel to display words that
begin with the prefix typed into the textbox. - The dropdown with candidate words supplied by a web service is
positioned on the bottom left of the text box.
This means that the control will fetch the data from a Webservice(sdsd), and it can be attached to an asp.net TextBox control.
Whenever users start typing in the textbox, it automatically fetches a suggestion list from the configured Webservice.
Note: Add latest Ajax dll in your application bin folder.
Step 1: Add Webservices (WebService.asmx)
code: appcode/WebService.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Collections;
/// Summary description for WebService
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService {
public WebService () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
public string[] GetNames(string prefixText, int count, string contextKey)
{
ArrayList sampleList = new ArrayList();
sampleList.Add("ABC"); sampleList.Add("Hello");
sampleList.Add("Hi"); sampleList.Add("Apple");
sampleList.Add("Hey");
ArrayList filteredList = new ArrayList();
foreach (string s in sampleList){
if (s.ToLower().StartsWith(prefixText.ToLower()))
filteredList.Add(s);
}
return (string[])filteredList.ToArray(typeof(string));
}
}
Step 2: AC.aspx page:
<%@ Page Language=”C#” AutoEventWireup=”true” CodeFile=”Ac.aspx.cs” Inherits=”Ac” %>
<%@ Register Assembly=”AjaxControlToolkit” Namespace=”AjaxControlToolkit” TagPrefix=”Ajaxtoolkit” %>
<html xmlns=”http://www.w3.org/1999/xhtml”>
<head runat=”server”></head>
<body>
<form id=”form1″ runat=”server”>
<asp:scriptmanager id=”ScriptManager1″ runat=”server”></asp:scriptmanager>
<div>
<asp:textbox id=”TextBox1″ runat=”server”></asp:textbox>
<ajaxtoolkit:autocompleteextender enabled=”true” minimumprefixlength=”0″ runat=”server” servicemethod=”GetNames” servicepath=”WebService.asmx” targetcontrolid=”TextBox1″ usecontextkey=”true”>
</ajaxtoolkit:autocompleteextender>
</div>
</form>
</body>
</html>
One comment on “Ajax Auto Complete suggestion in asp.net using webservices (Ajax AutocompleteExtender)”
Hello,
This is really interesting take on the concept. I never thought of it that way. I came across this site recently which I think it will be a great use of new ideas and informations. Thanks a lot…