using System;

public class Program

{

  class Person

  {

    public string name { get; set; }

​

    public Person(string name)

    {

      // using this to distinguish between the class variable name & the parameter name

      this.name = name;

    }

​

    public void GetDetails()

    {

      Console.WriteLine("Name: {0}", name);

      // using this to pass the current instance of this class to another class method

      Console.WriteLine("Favorite Number: {0}", Stuff.MakeNumberFromName(this));

    }

  }

​

  class Stuff

  {

    // This method takes the name from a Person object that is passed to it

    // and multiplies its length by 10.

    public static int MakeNumberFromName(Person p)

    {

      return p.name.Length * 10;

    }

  }

​

  public static void Main()

  {

    Person Bob = new Person("Bob");

    Bob.GetDetails();

    // outputs:

    // Name: Bob

    // Favorite Number: 30

  }

}