How To get String Substring in C Sharp

using System;

class Samplestring
{
  public static void Main()
{
    string string = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    Console.WriteLine("string: " + string);
   
    Console.Write("string.Substring(16): ");
    string substr = string.Substring(16);
    Console.WriteLine(substr);

  }
}
------------------
string: ABCDEFGHIJKLMNOPQRSTUVWXYZ
string.Substring(16): QRSTUVWXYZ
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