Context.savechanges is not working Entity Framework

Here is my code

 Using Context As New NotificationManagerEntities1
        Dim User = Context.Users.First()
        User.Firstname = "Shawn"
        User.Lastlogin = Today.Date
        Try
            Cont开发者_Go百科ext.SaveChanges()
        Catch ex As Exception

        End Try

    End Using

This executes fine with no exceptions, but when i look at the table it still has the same orginal value.

Im using a .sdf database with vs 2008

you sure it's not throwing an exception? your try/catch clause appears to simply swallow the exception without surfacing it.

You're not adding it to the entity. You are just creating the object. You need to call your entities add method.

I'm not a VB guy, so I am not sure on the syntax, but here's how to do it in C#

context.MyEntity.Add(newEntity);