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Capture de la sortie du processus via l'événement OutputDataReceived

J'essaie de capturer la sortie du processus en "temps réel" (pendant son exécution). Le code que j'utilise est plutôt simple (voir ci-dessous). Pour une raison étrange, l'événement OutputDataReceived n'est jamais appelé. Pourquoi?

private void button2_Click(object sender, EventArgs e)
    {
      // Setup the process start info
      var processStartInfo = new ProcessStartInfo("ping.exe", "-t -n 3 192.168.100.1")
      {
        UseShellExecute = false,
        RedirectStandardOutput = true
      };

      // Setup the process
      mProcess = new Process { StartInfo = processStartInfo, EnableRaisingEvents = true };

      // Register event
      mProcess.OutputDataReceived += OnOutputDataReceived;

      // Start process
      mProcess.Start();
      mProcess.WaitForExit();
    }

    void OnOutputDataReceived(object sender, DataReceivedEventArgs e)
    {
       //Never gets called...
    }
c#processstdout
36
Boris

Vous devez appeler 

mProcess.BeginOutputReadLine();

BeginOutputReadLine - "Commence les opérations de lecture asynchrone sur le flux StandardOutput redirigé de l'application."

62
Chris

void ExecuteCommand(string cmdpath, string cmdargs)
{
    string command = cmdpath + " " + cmdargs;

    tabc_results.SelectTab(1); 
    DoConsole("\r\nCmd>> " + command + "\r\n");

    var processInfo = new System.Diagnostics.ProcessStartInfo("cmd.exe", "/c " + command);
    processInfo.CreateNoWindow = true;
    processInfo.UseShellExecute = false;
    processInfo.RedirectStandardError = true;
    processInfo.RedirectStandardOutput = true;

    var process = System.Diagnostics.Process.Start(processInfo);

    process.OutputDataReceived += (
        object sender, System.Diagnostics.DataReceivedEventArgs e
    ) => DoConsole("stdout>>  " + e.Data + "\r\n");
    //Console.WriteLine("output>>" + e.Data);
    process.BeginOutputReadLine();

    process.ErrorDataReceived += (
        object sender, System.Diagnostics.DataReceivedEventArgs e
    ) =>DoConsole("stderr>>  " + e.Data + "\r\n");
    //Console.WriteLine("error>>" + e.Data);
    process.BeginErrorReadLine();

    process.WaitForExit();

    DoConsole("retcode>> " + process.ExitCode.ToString() + "\r\n");
    //Console.WriteLine("ExitCode: {0}", process.ExitCode);
    process.Close();
}
0
guest1