/// <summary>
      /// Un test delle variabili di ambiente
      /// </summary>
      private void writeEnvironmentAndApplication()
      {
         String str;
         String nl = Environment.NewLine;

         Trace.WriteLine(String.Format("-- Environment members --"));

         //  Invoke this sample with an arbitrary set of command line arguments.
         Trace.WriteLine(String.Format("CommandLine: {0}", Environment.CommandLine));

         String[] arguments = Environment.GetCommandLineArgs();
         Trace.WriteLine(String.Format("GetCommandLineArgs: {0}", String.Join(", ", arguments)));

         Trace.WriteLine(String.Format("CurrentDirectory: {0}", Environment.CurrentDirectory));

         Trace.WriteLine(String.Format("ExitCode: {0}", Environment.ExitCode));

         Trace.WriteLine(String.Format("HasShutdownStarted: {0}", Environment.HasShutdownStarted));

         Trace.WriteLine(String.Format("MachineName: {0}", Environment.MachineName));

         Trace.WriteLine(String.Format("OSVersion: {0}", Environment.OSVersion.ToString()));

         Trace.WriteLine(String.Format("StackTrace: '{0}'", Environment.StackTrace));

         Trace.WriteLine(String.Format("SystemDirectory: {0}", Environment.SystemDirectory));

         Trace.WriteLine(String.Format("TickCount: {0}", Environment.TickCount));

         Trace.WriteLine(String.Format("UserDomainName: {0}", Environment.UserDomainName));

         Trace.WriteLine(String.Format("UserInteractive: {0}", Environment.UserInteractive));

         Trace.WriteLine(String.Format("UserName: {0}", Environment.UserName));

         Trace.WriteLine(String.Format("Version: {0}", Environment.Version.ToString()));

         Trace.WriteLine(String.Format("WorkingSet: {0}", Environment.WorkingSet));

         //  No example for Exit(exitCode) because doing so would terminate this example.

         String query = "My system drive is %SystemDrive% and my system root is %SystemRoot%";
         str = Environment.ExpandEnvironmentVariables(query);
         Trace.WriteLine(String.Format("ExpandEnvironmentVariables: {0}  {1}", nl, str));

         Trace.WriteLine(String.Format("GetEnvironmentVariable: {0}  My temporary directory is {1}.", 
                                       nl, Environment.GetEnvironmentVariable("TEMP")));

         Trace.WriteLine(String.Format("GetEnvironmentVariables: "));

         Trace.WriteLine(String.Format("GetFolderPath: {0}", 
                    Environment.GetFolderPath(Environment.SpecialFolder.System)));

         String[] drives = Environment.GetLogicalDrives();
         Trace.WriteLine(String.Format("GetLogicalDrives: {0}", String.Join(", ", drives)));
         
         Trace.WriteLine("Company name: "+Application.CompanyName);
         Trace.WriteLine("Current culture: "+Application.CurrentCulture);
         Trace.WriteLine("Executable path: "+Application.ExecutablePath);
         Trace.WriteLine("Product name: "+Application.ProductName);
         Trace.WriteLine("Startup path: "+Application.StartupPath);
         Trace.WriteLine("user app data path: "+Application.UserAppDataPath);
      }