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Ajax.NET Professional (AjaxPro) for Microsoft ASP.NET
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AjaxPro No commit message May 17, 2012
LICENSE Create LICENSE Jan 28, 2019 Update Jan 28, 2019

Ajax.NET Professional

Ajax.NET Professional (AjaxPro) is one of the first AJAX frameworks available for Microsoft ASP.NET.

The framework will create proxy JavaScript classes that are used on client-side to invoke methods on the web server with full data type support working on all common web browsers including mobile devices. Return your own classes, structures, DataSets, enums,... as you are doing directly in .NET.

Quick Guide

  • Download the latest Ajax.NET Professional
  • Add a reference to the AjaxPro.2.dll (for the .NET 1.1 Framework use AjaxPro.dll)
  • Add following lines to your web.config
<?xml version="1.0" encoding="utf-8" ?>
      <add verb="POST,GET" path="ajaxpro/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro.2"/>
  • Now, you have to mark your .NET methods with an AjaxMethod attribute
public DateTime GetServerTime()
  return DateTime.Now;
  • To use the .NET method on the client-side JavaScript you have to register the methods, this will be done to register a complete class to Ajax.NET
namespace MyDemo
  public class DefaultWebPage
    protected void Page_Load(object sender, EventArgs e)

    public static DateTime GetServerTime()
      return DateTime.Now;
  • If you start the web page two JavaScript includes are rendered to the HTML source
  • To call a .NET method form the client-side JavaScript code you can use following syntax
function getServerTime() {
  MyDemo.DefaultWebPage.GetServerTime(getServerTime_callback);  // asynchronous call

// This method will be called after the method has been executed
// and the result has been sent to the client.
function getServerTime_callback(res) {
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