C# Process运行cmd命令的异步回显

以下的代码为new Process() 调用cmd命令，并将结果异步回显到Form的例子：

以下的代码为new Process() 调用cmd命令，并将结果异步回显到Form的例子：

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    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.定义委托
        public delegate void DelReadStdOutput(string result);
        public delegate void DelReadErrOutput(string result);  

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

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

            private void Init()
            {
                //3.将相应函数注册到委托事件中
                ReadStdOutput += new DelReadStdOutput(ReadStdOutputAction);
                ReadErrOutput += new DelReadErrOutput(ReadErrOutputAction);
            }  

            private void button1_Click(object sender, EventArgs e)
            {
                // 启动进程执行相应命令,此例中以执行ping.exe为例
                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;      // 参数  

                CmdProcess.StartInfo.CreateNoWindow = true;         // 不创建新窗口
                CmdProcess.StartInfo.UseShellExecute = false;
                CmdProcess.StartInfo.RedirectStandardInput = true;  // 重定向输入
                CmdProcess.StartInfo.RedirectStandardOutput = true; // 重定向标准输出
                CmdProcess.StartInfo.RedirectStandardError = true;  // 重定向错误输出
                //CmdProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;  

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

                CmdProcess.EnableRaisingEvents = true;                      // 启用Exited事件
                CmdProcess.Exited += new EventHandler(CmdProcess_Exited);   // 注册进程结束事件  

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

                // 如果打开注释，则以同步方式执行命令，此例子中用Exited事件异步执行。
                // CmdProcess.WaitForExit();
            }  

            private void p_OutputDataReceived(object sender, DataReceivedEventArgs e)
            {
                if (e.Data != null)
                {
                    // 4. 异步调用，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)
            {
                // 执行结束后触发
            }
        }
    }