How to define constraints on multiple generics parameters

Question

I am wondering why I cant get such simple thing like this on google. This code is not compilable. How can I do this?

public class TestStep<StartEvent, CompletedEvent>      where StartEvent : MyBase1, MyInterface1, new() &&     where CompletedEvent : MyBase2, MyInterface2, new() { } 

Please help.

Answer 1

Try without the "&&"

public class TestStep<StartEvent, CompletedEvent>      where StartEvent : MyBase1, MyInterface1, new()     where CompletedEvent : MyBase2, MyInterface2, new() { }