Asp.Net mvc paypal integration

Question

hi,

i am trying to integrate paypal sandox with my mvc project. I have enabled AutoReturn and ipn, i have disabled PDT.

After payment is made, in the auto-return page, i get

Request.HttpMethod --> GET
HttpContext.Request.ContentLength --> 0
Request.Form.Keys.Count --> 0

if i enable PDT also, i get the same result

can anyone please solve this