Ray's Asp.net Blog
Answers and code snippets from ASP.NET projects (Webforms/MVC/Classic ASP)
Event registration app with QR/Paypal
Saturday, December 25, 2010
How to solve “New transaction is not allowed because there are other threads running in the session” in Entity Framework
Make sure only call SaveChanges method once in the end, not inside loop.
Or covert collection to IList