执行cmd并返回程序结果

// Define the namespaces used by this sample.

using  System;
using  System.Text;
using  System.Globalization;
using  System.IO;
using  System.Diagnostics;
using  System.Threading;
using  System.ComponentModel;
 
 
namespace  ProcessAsyncStreamSamples
{
 
     class  ProcessNetStreamRedirection
     {
         // Define static variables shared by class methods.
         private  static  StreamWriter streamError = null ;
         private  static  String netErrorFile = "" ;
         private  static  StringBuilder netOutput = null ;
         private  static  bool  errorRedirect = false ;
         private  static  bool  errorsWritten = false ;
 
         public  static  void  RedirectNetCommandStreams()
         {
             String netArguments;
             Process netProcess;
 
             // Get the input computer name.
             Console.WriteLine( "Enter the computer name for the net view command:" );
             netArguments = Console.ReadLine().ToUpper(CultureInfo.InvariantCulture);
             if  (String.IsNullOrEmpty(netArguments))
             {
                 // Default to the help command if there is not an input argument.
                 netArguments = "/?" ;
             }
 
             // Check if errors should be redirected to a file.
             errorsWritten = false ;
             Console.WriteLine( "Enter a fully qualified path to an error log file" );
             Console.WriteLine( "  or just press Enter to write errors to console:" );
             netErrorFile = Console.ReadLine().ToUpper(CultureInfo.InvariantCulture);
             if  (!String.IsNullOrEmpty(netErrorFile))
             {
                 errorRedirect = true ;
             }
 
             // Note that at this point, netArguments and netErrorFile
             // are set with user input.  If the user did not specify
             // an error file, then errorRedirect is set to false.
 
             // Initialize the process and its StartInfo properties.
             netProcess = new  Process();
             netProcess.StartInfo.FileName = "Net.exe" ;
 
             // Build the net command argument list.
             netProcess.StartInfo.Arguments = String.Format( "view {0}" ,
                 netArguments);
 
             // Set UseShellExecute to false for redirection.
             netProcess.StartInfo.UseShellExecute = false ;
 
             // Redirect the standard output of the net command. 
             // This stream is read asynchronously using an event handler.
             netProcess.StartInfo.RedirectStandardOutput = true ;
             netProcess.OutputDataReceived += new  DataReceivedEventHandler(NetOutputDataHandler);
             netOutput = new  StringBuilder();
 
             if  (errorRedirect)
             {
                 // Redirect the error output of the net command.
                 netProcess.StartInfo.RedirectStandardError = true ;
                 netProcess.ErrorDataReceived += new  DataReceivedEventHandler(NetErrorDataHandler);
             }
             else
             {
                 // Do not redirect the error output.
                 netProcess.StartInfo.RedirectStandardError = false ;
             }
 
             Console.WriteLine( "\nStarting process: net {0}" ,
                 netProcess.StartInfo.Arguments);
             if  (errorRedirect)
             {
                 Console.WriteLine( "Errors will be written to the file {0}" ,
                     netErrorFile);
             }
 
             // Start the process.
             netProcess.Start();
 
             // Start the asynchronous read of the standard output stream.
             netProcess.BeginOutputReadLine();
 
             if  (errorRedirect)
             {
                 // Start the asynchronous read of the standard
                 // error stream.
                 netProcess.BeginErrorReadLine();
             }
 
             // Let the net command run, collecting the output.
             netProcess.WaitForExit();
 
             if  (streamError != null )
             {
                 // Close the error file.
                 streamError.Close();
             }
             else
             {
                 // Set errorsWritten to false if the stream is not
                 // open.   Either there are no errors, or the error
                 // file could not be opened.
                 errorsWritten = false ;
             }
 
             if  (netOutput.Length > 0)
             {
                 // If the process wrote more than just
                 // white space, write the output to the console.
                 Console.WriteLine( "\nPublic network shares from net view:\n{0}\n" ,
                     netOutput);
             }
 
             if  (errorsWritten)
             {
                 // Signal that the error file had something
                 // written to it.
                 String [] errorOutput = File.ReadAllLines(netErrorFile);
                 if  (errorOutput.Length > 0)
                 {
                     Console.WriteLine( "\nThe following error output was appended to {0}." ,
                         netErrorFile);
                     foreach  (String errLine in  errorOutput)
                     {
                         Console.WriteLine( "  {0}" , errLine);
                     }
                 }
                 Console.WriteLine();
             }
 
             netProcess.Close();
 
         }
 
         private  static  void  NetOutputDataHandler( object  sendingProcess,
             DataReceivedEventArgs outLine)
         {
             // Collect the net view command output.
             if  (!String.IsNullOrEmpty(outLine.Data))
             {
                 // Add the text to the collected output.
                 netOutput.Append(Environment.NewLine + "  "  + outLine.Data);
             }
         }
 
         private  static  void  NetErrorDataHandler( object  sendingProcess,
             DataReceivedEventArgs errLine)
         {
             // Write the error text to the file if there is something
             // to write and an error file has been specified.
 
             if  (!String.IsNullOrEmpty(errLine.Data))
             {
                 if  (!errorsWritten)
                 {
                     if  (streamError == null )
                     {
                         // Open the file.
                         try
                         {
                             streamError = new  StreamWriter(netErrorFile, true );
                         }
                         catch  (Exception e)
                         {
                             Console.WriteLine( "Could not open error file!" );
                             Console.WriteLine(e.Message.ToString());
                         }
                     }
 
                     if  (streamError != null )
                     {
                         // Write a header to the file if this is the first
                         // call to the error output handler.
                         streamError.WriteLine();
                         streamError.WriteLine(DateTime.Now.ToString());
                         streamError.WriteLine( "Net View error output:" );
                     }
                     errorsWritten = true ;
                 }
 
                 if  (streamError != null )
                 {
                     // Write redirected errors to the file.
                     streamError.WriteLine(errLine.Data);
                     streamError.Flush();
                 }
             }
         }
     }
}

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