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：

 

 

 

 

 

 

 

 

 

 

 

 

 
[csharp] view plain copy

    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  
            }  
        }  
    }