Interfaces can’t have static members and static methods can not be used as implementation of interface methods.
What you can do is use an explicit interface implementation:
public interface IMyInterface
{
void MyMethod();
}
public class MyClass : IMyInterface
{
static void MyMethod()
{
}
void IMyInterface.MyMethod()
{
MyClass.MyMethod();
}
}
Alternatively, you could simply use non-static methods, even if they do not access any instance specific members.