C#process How do I get the return value after executing a batch?

The code is as follows
P.startinfo = new System.Diagnostics.ProcessStartInfo (path, PWD);
P.start ();
Where path is a bat path!
I want to get the return value after execution to determine if the batch process is wrong during the run?
How do I do it?
The contents of the batch process are as follows:
@echo off
for/f "delims="%%a in (pclist.config) does net use \\%%a\ipc$/delete
for/f "delims="%%a in (pclist.config) does net use \\%%a\ipc$%1/user:administrator
Pause

Define the namespaces used by this sample.using system;using system.text;using system.globalization;using System.IO;us    ing 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)) {    The Default to the help command if there are not a input argument.            Netarguments = "/?";            }//Check If errors should is 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 the this point, netarguments and Neterrorfile//is set with user input.            If the user did not specify//A 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 the 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'll 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 stre                Am.            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 was not  Open.                Either there is no errors, or the error//file could not being 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 app                    Ended 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 are something//to write and an error file H            As 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.WR                            Iteline ("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 ();  }            }        }    }}

String arg = string. Format (backupfmt, server, user, PWD, database, file);  Process P = new process ();  p.StartInfo.FileName = "cmd.exe";  P.startinfo.useshellexecute = false;  P.startinfo.workingdirectory = location + @ "Bin";  p.startinfo.arguments = arg;  P.startinfo.windowstyle = Processwindowstyle.hidden;  P.startinfo.createnowindow = true;  P.startinfo.redirectstandardinput = true;  P.startinfo.redirectstandardoutput = true; P.start ();  StreamWriter SW = p.standardinput;  Sw. WriteLine (ARG);  Sw. WriteLine (Environment.NewLine);  Sw. Close (); #if DEBUG  StreamReader sr = p.standardoutput;string str = Sr. ReadToEnd (); if (!string. IsNullOrEmpty (str)) {Console.WriteLine ("Restore File:" + file); Console.WriteLine ("Message:" + str);} Sr. Close (); #endif  p.waitforexit ();  P.close ();

Run a DOS command in C #, and intercept the output, output stream problems, this problem I have implemented in Java, because in C # has not encountered a similar situation, in order to avoid every time others asked to repeat the case of the presentation, specifically to do a simple example, Implement ping a Web site in WinForm, and display the results of the ping in a text box.

 private void Btnexecute_click (object sender, EventArgs e) {Tbresult.            Text = ""; ProcessStartInfo start = new ProcessStartInfo ("Ping.exe");//Set Run command line file to ask Ping.exe file, this filesystem will find itself//if it is another EXE file, it is possible You need to specify a detailed path, such as running WinRar.exe start. Arguments = txtcommand.text;//Set command parameter start. CreateNoWindow = true;//does not display the DOS command line window start. Redirectstandardoutput = true;//start. Redirectstandardinput = true;//start.            UseShellExecute = false;//Whether the operating system shell process initiator is specified (start); StreamReader reader = p.standardoutput;//intercepts the output stream string line = reader. ReadLine ();//reads one row at a time (!reader.                Endofstream) {Tbresult.appendtext (line+ ""); line = reader.            ReadLine (); } p.waitforexit ();//wait for the program to finish executing the exit process p.close ();//close Process reader. Close ();//Closed stream}  

C#process How do I get the return value after executing a batch?