ToString interface overrides

Explicit_and_override.cs

using System;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            var myClass = new MyClass();

            Console.WriteLine("Class: " + myClass.ToString());
            Console.WriteLine("Interface: " + ((MyInterface)myClass).ToString());
            Console.WriteLine("object: " + ((object)myClass).ToString());

            Console.ReadLine();
        }
    }

    public interface MyInterface
    {
        string ToString();
    }

    public class MyClass : MyInterface
    {
        public override string ToString()
        {
            return "override";
        }

        string MyInterface.ToString()
        {
            return "explicit";
        }
    }
}
/*
 displays
Class: override
Interface: explicit
object: override
*/

Explicit_interface.cs

using System;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            var myClass = new MyClass();

            Console.WriteLine("Class: " + myClass.ToString());
            Console.WriteLine("Interface: " + ((MyInterface)myClass).ToString());
            Console.WriteLine("object: " + ((object)myClass).ToString());

            Console.ReadLine();
        }
    }

    public interface MyInterface
    {
        string ToString();
    }

    public class MyClass : MyInterface
    {
        string MyInterface.ToString()
        {
            return "explicit";
        }
    }
}
/*
 displays
Class: Demo.MyClass
Interface: explicit
object: Demo.MyClass
*/

New_ToString.cs

using System;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            var myClass = new MyClass();

            Console.WriteLine("Class: " + myClass.ToString());
            Console.WriteLine("Interface: " + ((MyInterface)myClass).ToString());
            Console.WriteLine("object: " + ((object)myClass).ToString());

            Console.ReadLine();
        }
    }

    public interface MyInterface
    {
        string ToString();
    }

    public class MyClass : MyInterface
    {
        public new string ToString()
        {
            return "new";
        }
    }
}
/*
 displays
Class: new
Interface: new
object: Demo.MyClass
*/

No_implementation.cs

using System;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            var myClass = new MyClass();

            Console.WriteLine("Class: " + myClass.ToString());
            Console.WriteLine("Interface: " + ((MyInterface)myClass).ToString());
            Console.WriteLine("object: " + ((object)myClass).ToString());

            Console.ReadLine();
        }
    }

    public interface MyInterface
    {
        string ToString();
    }

    public class MyClass : MyInterface
    {
    }
}
/*
 displays
Class: Demo.MyClass
Interface: Demo.MyClass
object: Demo.MyClass
*/

No_Interface_Method.cs

using System;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            var myClass = new MyClass();

            Console.WriteLine("Class: " + myClass.ToString());
            Console.WriteLine("Interface: " + ((MyInterface)myClass).ToString());
            Console.WriteLine("object: " + ((object)myClass).ToString());

            Console.ReadLine();
        }
    }

    public interface MyInterface
    {
    }

    public class MyClass : MyInterface
    {
        public override string ToString()
        {
            return "override";
        }
    }
}
/*
 displays
Class: override
Interface: override
object: override
*/

Override_ToString.cs

using System;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            var myClass = new MyClass();

            Console.WriteLine("Class: " + myClass.ToString());
            Console.WriteLine("Interface: " + ((MyInterface)myClass).ToString());
            Console.WriteLine("object: " + ((object)myClass).ToString());

            Console.ReadLine();
        }
    }

    public interface MyInterface
    {
        string ToString();
    }

    public class MyClass : MyInterface
    {
        public override string ToString()
        {
            return "override";
        }
    }
}
/*
 displays
Class: override
Interface: override
object: override
*/