How to correctly handle this situation: In the folder with the program was originally an executable and the necessary dll. Some of the dll for some reason removed. It is necessary that when the program starts, a message is issued to the user, so that he downloads the program from the site again, and after that the program must be completed. Now I did this: In the Main method I placed AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;

  private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) { Exception ex = e.ExceptionObject as Exception; if (ex.Message.ToLower().Contains( "could not load file or assembly" )) { Classes.MyForm.Show("", "Похоже, что повреждён или удалён один из файлов, необходимых для работы программы. Для восстановления всех файлов скачайте программу заново", Classes.MyForm.ftypes.Warning); Environment.Exit(0); }

Do I think correctly, or is there a better way?

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    Note: Exit(0) - completion code 0 usually means success, normal completion. And in this case, the completion of the emergency program, so the code should not be zero. - Alexander Petrov
  • more correct way: AppDomain.AssemblyResolve - msdn.microsoft.com/en-us/library/… - Igor
  • 2
    Filtering by text is not really a good idea. Check that the type of the exception FileNotFoundException and its FileName property ends with .dll - MSDN.WhiteKnight

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