接口是引用类型还是值类型？

[颤菊大师]

经测试：值类型。

    class Program
    {
        static void Main(string[] args)
        {
            MyStruct myStruct = new MyStruct();
            myStruct.Val = 5;
            object myObj1 = myStruct;
            myStruct.Val++;
            MyStruct myStruct2 = (MyStruct)myObj1;
            Console.WriteLine(myStruct.Val);
            Console.WriteLine(myStruct2.Val);

            MyStruct myStruct3 = new MyStruct();
            myStruct3.Val = 5;
            IMyInterface refType = myStruct3;
            myStruct3.Val++;
            MyStruct myStruct4 = (MyStruct)refType;
            Console.WriteLine(myStruct3.Val);
            Console.WriteLine(myStruct4.Val);

            MyClass myClass = new MyClass();
            myClass.Val = 5;
            object myObj2 = myClass;
            myClass.Val++;

            MyClass myClass2 = (MyClass)myObj2;
            Console.WriteLine(myClass.Val);
            Console.WriteLine(myClass2.Val);

            Console.ReadKey();
        }
    }
    interface IMyInterface { }
    struct MyStruct : IMyInterface
    {
        public int Val;
    }

    class MyClass
    {
        public int Val;
    }

[vrhero]

你这竟然也叫测试？