What is allowed in Visual Basic that's prohibited in C# (or vice versa)?

Question

This is code-related as in what the compiler will allow you to do in one language, but not allow you to do in another language (e.g. optional parameters in

Answer 1

VB.NET has support for CIL Exception Filters, C# doesn't:

Try 
  ...
Catch ex As SomeException When ex.SomeProperty = 1
  ...
End Try