using System;

​

public class Program

{

    static void Main(string[] args)

    {

        (int Id, string FirstName, string LastName)  = GetPerson();

        Console.WriteLine("{0},{1}, {2}", Id, FirstName, LastName);

        (var PersonId, var FName, var LName) = GetPerson(); // using var

        Console.WriteLine("{0},{1}, {2}", PersonId, FName, LName);

        (var PId, var Name, _) = GetPerson(); //discard other members

        Console.WriteLine("{0},{1}", PId, Name);

    }

​

    static (int, string, string) GetPerson()

    {

        return (Id: 1, FirstName: "Bill", LastName: "Gates");

    }

}