C#接口不能包含运算符

public interface IMyInterface
{
    int Value { get; }
}

public class MyClass : IMyInterface
{
    public int Value { get; private set; }

    public MyClass(int value)
    {
        Value = value;
    }

    public static MyClass operator +(MyClass a, MyClass b)
    {
        return new MyClass(a.Value + b.Value);
    }
}

MyClass a = new MyClass(1);
MyClass b = new MyClass(2);
MyClass c = a + b;
Console.WriteLine(c.Value); // 输出 3