using System;

public class Program

{

    public static void Main()

    {

        var instClass = new InstanceClass();

        instClass.PrintMyName();

        StaticClass.PrintMyName();

    }

}

​

public class InstanceClass

{

    public void PrintMyName()

    {

        Console.WriteLine($"I'm  {nameof(InstanceClass)}");

    }

}

​

public static class StaticClass

{

    public static void PrintMyName()

    {

        Console.WriteLine($"I'm  {nameof(StaticClass)}");

    }

}