To C # process run asynchronous echo of cmd command

The following code calls the cmd command for New Process () and asynchronously echoes the result to the example of the form:

Using System;
Using System.Collections.Generic;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Linq;
Using System.Text;
Using System.Windows.Forms;
Using System.Diagnostics;

Namespace Cmdcallbackshow
{
1. Defining delegates
public delegate void Delreadstdoutput (string result);
public delegate void Delreaderroutput (string result);

Public partial class Form1:form {//2. Defining delegate Events public event Delreadstdoutput Readstdoutput;      public event Delreaderroutput Readerroutput;          Public Form1 () {InitializeComponent ();      Init (); } private void Init () {//3. Register the corresponding function in the delegate event Readstdoutput + = new Delreadstdoutput (Readstdoutputa          ction);      Readerroutput + = new Delreaderroutput (readerroutputaction); The private void Button1_Click (object sender, EventArgs e) {//starts the process to execute the appropriate command, in this case the execution of Ping.exe as an example Real      Action ("Ping.exe", TextBox1.Text); private void Realaction (String startfilename, String startfilearg) {Process cmdprocess = new P          Rocess ();      CmdProcess.StartInfo.FileName = StartFileName;      Command CmdProcess.StartInfo.Arguments = Startfilearg;         Parameter CmdProcess.StartInfo.CreateNoWindow = true;        Do not create a new window CmdProcess.StartInfo.UseShellExecute = false;  CmdProcess.StartInfo.RedirectStandardInput = true; REDIRECT Input CmdProcess.StartInfo.RedirectStandardOutput = true;  REDIRECT Standard output CmdProcess.StartInfo.RedirectStandardError = true;          REDIRECT Error output//cmdprocess.startinfo.windowstyle = Processwindowstyle.hidden;          cmdprocess.outputdatareceived + = new Datareceivedeventhandler (p_outputdatareceived);          cmdprocess.errordatareceived + = new Datareceivedeventhandler (p_errordatareceived);                      Cmdprocess.enableraisingevents = true;   Enable Exited event cmdprocess.exited + = new EventHandler (cmdprocess_exited);          Registration process End Event Cmdprocess.start ();          Cmdprocess.beginoutputreadline ();          Cmdprocess.beginerrorreadline ();          If you open a comment, the command executes synchronously, and this example executes asynchronously with the exited event.           Cmdprocess.waitforexit ();          private void P_outputdatareceived (object sender, Datareceivedeventargs e) {if (e.data! = null) {//4. Asynchronous invocation, requires InvokE this.          Invoke (Readstdoutput, new object[] {e.data});           }} private void P_errordatareceived (object sender, Datareceivedeventargs e) {if (e.data! = null) {this.          Invoke (Readerroutput, new object[] {e.data}); }} private void Readstdoutputaction (string result) {This.textBoxShowStdRet.AppendText (result +)      \ r \ n ");       } private void Readerroutputaction (string result) {This.textBoxShowErrRet.AppendText (result + "\ r \ n");   private void Cmdprocess_exited (object sender, EventArgs e) {//Trigger after execution}}

}

To C # process run asynchronous echo of cmd command