Using optional Parameter

I'm trying to you a web service wi开发者_高级运维th my MVC3 controller. This service has an optional parameter, such as

Service.GetObject(int id, DateTime? date)

But when I try to call it will a null value , like

Service.GetObject(id, null)

I get this error.

$exception {"Object cannot be cast from DBNull to other types."} System.Exception {System.ServiceModel.FaultException}

Please help if you can.

---

It looks like the service is trying to cast from DBNull to some other type (DBNull != null) and since the code you show has no notion of DBNull it's hard to say what the problem is but it doesn't look like it's in the client code

---

You should't have to even use null for the second parameter in your call.

http://blogs.msdn.com/b/simonince/archive/2011/02/02/asp-net-mvc-3-optional-parameter-routing-issue.aspx