C# Language Design: explicit interface implementation of an event

Question

Small question about C# language design :))

If I had an interface like this:

interface IFoo {
  int Value { get; set; }
}

It\'s pos

Answer 1

When explicitly implementing an event that was declared in an interface, you must use manually provide the add and remove event accessors that are typically provided by the compiler. The accessor code can connect the interface event to another event in your class or to its own delegate type.

For example, this will trigger error CS0071:

public delegate void MyEvent(object sender);

interface ITest
{
    event MyEvent Clicked;
}

class Test : Itest
{
    event MyEvent ITest.Clicked;  // CS0071
    public static void Main() { }
}

The correct way would be:

public delegate void MyEvent(object sender);

interface ITest
{
    event MyEvent Clicked;
}

class Test : Itest
{
    private MyEvent clicked;

    event MyEvent Itest.Clicked
    {
        add
        {
            clicked += value;
        }

        remove
        {
            clicked -= value;
        }
    }

    public static void Main() { }
}

see Compiler Error CS0071