How do I define a generic class that implements an interface and constrains the type parameter?

Question

class Sample<T> : IDisposable // case A {     public void Dispose()     {         throw new NotImplementedException();     } }  class SampleB<T> where T : IDisposable // case B { }  class SampleC<T> : IDisposable, T : IDisposable // case C {     public void Dispose()     {         throw new NotImplementedException();     } } 

Case C is the combination of case A and case B. Is that possible? How to make case C right?

Answer 1

First the implemented interfaces, then the generic type constraints separated by where:

class SampleC<T> : IDisposable where T : IDisposable // case C {        //                      ↑     public void Dispose()     {         throw new NotImplementedException();     } }