'event': event in interface cannot have initializer
An event in an interface cannot have an initializer.
The following sample generates CS0068:
delegate void MyDelegate(); interface I { event MyDelegate d = new MyDelegate(M.f); // CS0068 // try the following line instead // event MyDelegate d2; } class M { event MyDelegate d = new MyDelegate(M.f); public static void f() { } public static void Main() { } }