using System;

public class Program

{

    public static void Main()

    {

        //implicit

        string name = new Kottan("Tom");    

        Console.WriteLine(name);

        //explicit

        Kottan kottan = (Kottan)"Tom";

        Console.WriteLine(kottan.Name);

    }

}

​

public class Kottan

{

    private readonly string name;

    public Kottan(string name)

    {

        this.name = name;

    }

    public string Name {get {return name;}}

    public static implicit operator string (Kottan kottan)

    {

        return kottan.Name;

    }

    public static explicit operator Kottan (string name)

    {

        return new Kottan(name);

    }

}