How do you get the nonce value in an MVC.NET App?

Question

In the research that I have done there is an oAuth library out there, but I guess this isn't in System.Web or System.Web.MVC etc. If using the nonce value is the correct way to prevent relay attacks and the preferred method to prevent duplicate form submissions it would seem like there would be an out of box solution to get at this value.

Any input would be helpful.

Thanks, Mike