AntiForgery Asp.net Webforms

Question

I am using this for Anti Forgery in my asp.net 4.5 web form application.

<form id="form1" runat="server" class="formCont" method="post">
     <%= System.Web.Helpers.AntiForgery.GetHtml() %>

using Namespace

using System.Web.Helpers;

and on page load

 AntiForgery.Validate();

it's working fine.
Now I have created may asp generic handler for ajax call from javascript. Now the issue is how can I validate the same in my generic handler.

I have tried this in my ajax call

 data: { "__RequestVerificationToken": $("input[name=__RequestVerificationToken]").val() },

and in handler trying this AntiForgery.Validate(); but I am getting the exception

An exception of type 'System.Web.Mvc.HttpAntiForgeryException' occurred in System.Web.WebPages.dll but was not handled in user code

Additional information: The required anti-forgery form field "__RequestVerificationToken" is not present. 

I have checked in and I am getting the values in context.Request["__RequestVerificationToken"]

how can I over come this issue.

Answer 1

I got the solution

It was looking in context.Request.Forms collection so I make a small change as below

1. Change the request type to post type: "POST",

and bingo it worked.