How to detect if user has deleted a file or not?

static class Program
  {
      /// <summary>
      /// The main entry point for the application.
      /// </summary>
      [STAThread]
      static void Main()
      {
         if (File.Exist(Path))
         {
           .... Checking File  Data....
          Application.EnableVisualStyles();
          Application.SetCompatibleTextRenderingDefault(false);
          Application.Run(new Form1());
         }
      }
  }