How to compare a date returned from the DB to a date (string or otherwise)?

I have a big flinq query that returns, among many other things, a date a conversation was started. I'd like to return only conversations that were started after 1-1-2011.

I have something like this:

conversation.TimeOfInitiation > "1-1-2011"

but i'm getting this error:

The type System.Nullable<System.DateTime>开发者_如何学JAVA does not support the 'comparison' constraint. For example, it does not support the 'System.IComparable' interface

obvoiusly my naive approach did not succeed. How do I get around this?

http://msdn.microsoft.com/en-us/library/72cec0e0.aspx

You have to get the value. Nullable is basically a generic container that carries a value.