Using the Thread Class

Program.cs

namespace MultiThreadingExamples
{
  public static void UltraCoolMethod()
  {
      const int iterationNumber = 10;
      for (var i = 0; i < iterationNumber; i++)
      {
          Console.WriteLine($"Execution Thread Nº {i}");
          Thread.Sleep(0);
      }
  }
  static void Main(string[] args)
  {
      Thread theThread = new Thread(new ThreadStart(UltraCoolMethod));
      // You can do it Implicitly as well
      // Thread theThread = new Thread(UltraCoolMethod);
      theThread.Start();

      for (var i = 0; i < 5; i++)
      {
          Console.WriteLine("Hey, the main thread is still doing stuff!");
          Thread.Sleep(0);
      }

      theThread.Join();
  }
}