C# Process運行cmd命令的異步回顯

以下的代碼為new Process() 調用cmd命令，並將結果異步回顯到Form的例子：

 

 

 

 

 

 

 

 

 

 

 

 

 

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.定義委托
    public delegate void DelReadStdOutput(string result);
    public delegate void DelReadErrOutput(string result);

    public partial class Form1 : Form
    {
        // 2.定義委托事件
        public event DelReadStdOutput ReadStdOutput;
        public event DelReadErrOutput ReadErrOutput;

        public Form1()
        {
            InitializeComponent();
            Init();
        }

        private void Init()
        {
            //3.將相應函數注冊到委托事件中
            ReadStdOutput += new DelReadStdOutput(ReadStdOutputAction);
            ReadErrOutput += new DelReadErrOutput(ReadErrOutputAction);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // 啟動進程執行相應命令,此例中以執行ping.exe為例
            RealAction("ping.exe", textBox1.Text);
        }

        private void RealAction(string StartFileName, string StartFileArg)
        {
            Process CmdProcess = new Process();
            CmdProcess.StartInfo.FileName = StartFileName;      // 命令
            CmdProcess.StartInfo.Arguments = StartFileArg;      // 參數

            CmdProcess.StartInfo.CreateNoWindow = true;         // 不創建新窗口
            CmdProcess.StartInfo.UseShellExecute = false;
            CmdProcess.StartInfo.RedirectStandardInput = true;  // 重定向輸入
            CmdProcess.StartInfo.RedirectStandardOutput = true; // 重定向標准輸出
            CmdProcess.StartInfo.RedirectStandardError = true;  // 重定向錯誤輸出
            //CmdProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;

            CmdProcess.OutputDataReceived += new DataReceivedEventHandler(p_OutputDataReceived);
            CmdProcess.ErrorDataReceived += new DataReceivedEventHandler(p_ErrorDataReceived);

            CmdProcess.EnableRaisingEvents = true;                      // 啟用Exited事件
            CmdProcess.Exited += new EventHandler(CmdProcess_Exited);   // 注冊進程結束事件

            CmdProcess.Start();
            CmdProcess.BeginOutputReadLine();
            CmdProcess.BeginErrorReadLine();

            // 如果打開注釋，則以同步方式執行命令，此例子中用Exited事件異步執行。
            // CmdProcess.WaitForExit();
        }

        private void p_OutputDataReceived(object sender, DataReceivedEventArgs e)
        {
            if (e.Data != null)
            {
                // 4. 異步調用，需要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)
        {
            // 執行結束后觸發
        }
    }
}