using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

    public static string Name = "HMA";

}

​

public class C

{

    public string Name { get; } = "HMA";

    public string Name2 => "VPN";

    public string Name3 => $"{Boo()}";

    public C()

    { 

        Name = "test"; 

        //Name2 = "test";

    }

    public void Foo()

    { 

        //Name = "test"; 

        //Name2 = "test";

    }

​

    public string Boo()

    { 

        return "test";

    }   

}