转 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：

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
    }
}  

}

原文地址：https://www.cnblogs.com/ssboy/p/9158883.html