Hi,

Since you're using ASP.NET, you can create a web service which returns JSON, and point the grid's dataSourceUrl to the web service url. Here is an example about how to bind the grid to a WCF service:

https://www.igniteui.com/help/iggrid-getting-started-with-iggrid-odata-and-wcf-data-services

Select Sample Source File to View => RemoteBinding.html 

Hope it helps. Thanks,

Angel

http://encosia.com/using-jquery-to-directly-call-aspnet-ajax-page-methods/

I believe that it has the details you are looking for.

As for the grid, you can simply set the URL to the JSON-returning ASP page method as the grid's dataSource and you should be all set.

However, there are 2 alternative here:

1. You explicitly allow HTTP GET for this page method

or

2. Since ASP.NET defaults to using HTTP POSTs in order to ensure that your pages are secure, it won't work with the grid (or dataSource) directly as they will make GET requests to the dataSource URL (this is a design decision based on the REST standards).
In that case you will need to do

    $.ajax({
      type: "POST",
      url: "http://Default.aspx/YourPageMethod",
      data: "{}",
      contentType: "application/json; charset=utf-8",
      dataType: "json",
      success: function(data) {

        $("#grid").igGrid({
             dataSource: data 

         });
      }
    });

 
Angel gave you the nod to WCF services because generally they are the recommended and more beneficial way of having a "service-like" experience.

Hope this helps.
Cheers,
Borislav 

http://help.infragistics.com/Help/NetAdvantage/jQuery/2011.2/CLR4.0/HTML/igGrid_Updating.html

=> Persisting the changes to the server

Hope it helps. Thanks,

Angel