Quote:
dude ..i heared there is inbuilt functionality for 4.5 which is not for 4.0
You are correct. They are out of the box in 4.5. More at -
OAuth in the Default ASP.NET 4.5 Templates[
^].
But under the hood, it implements
http://dotnetopenauth.net/[
^]. So, download the samples (links given on the mentioned website) and try in Visual Studio with 4.0 Web Forms.
I guess, if you try your hands for sometime, you will succeed.