using System;

​

public class Program

{

    public static void Main()

    {

        String[] values = { null, "160519", "9432.0", "16,667",

                          "   -322   ", "+4302", "(100);", "01FA" };

      foreach (var value in values) 

      {

         int number;

         bool success = Int32.TryParse(value, out number);

         if (success)

         {

            Console.WriteLine("Converted '{0}' to {1}.", value, number);         

         }

         else

         {

            Console.WriteLine("Attempted conversion of '{0}' failed.", value ?? "<null>");

         }

      }

    }

}