Hi

I am trying to catch an error with an incorrect commandline parameter for the application of form

Myapp.exe myFile.txt

The application however throws an "Unhandled exception - The path is not of legal form".

Below is my code and I am wondering why it does not show the message box as provided in the code? Thanks.

String[] cmdlineArgs = Environment.GetCommandLineArgs();

if (cmdlineArgs.Length == 2)
{
    try
    {
        if (File.Exists(cmdlineArgs[1].ToString()))
            ConfigParameters.SetConfigParameters(cmdlineArgs[1].ToString());
        else
            {
                MessageBox.Show("Configuration file does not exist.Restarting...");
                Environment.Exit(1);
             }
     }
     catch (Exception ex)
     {

     }