How To Upload File From Download link.

You can use in your code like this:

return System.Net.Http.HttpRequestMessage.Request.Content.ReadAsMultiPartAsync(this)

As You say I add System.Net.Http;

But it occur same error. you can see in screenshot.

can you make small project for out this task.

this class is part of WebApi in .net

Refer Telerik blog 
http://www.telerik.com/support/kb/data-access/details/manually-installing-references-required-by-the-web-api-service

i cant find System.Net.Http;

i am using .net 4.0 (VS 2010).

I missed to tell you, use this:
using System.Net.Http;

//so it'll be like System.Net.Http.HttpRequestMessage.Request

Error in Request.Content


Error2'System.Web.HttpRequest' does not contain a definition for 'Content' and no extension method 'Content' accepting a first argument of type 'System.Web.HttpRequest' could be found (are you missing a using directive or an assembly reference?)

Following convention, we generally upload at App_Data folder but you can choose any folder of your own choice

to upload you can now enjoy power of async so your application doesn't wait for that process to complete, use below snippet as reference