C# 调用cmd.exe的方法

网上有很多用C#调用cmd的方法，大致如下：

 


  private
   
  void
   ExecuteCmd(
  string
   command) { Process p 
  =
   
  new
   Process(); p.StartInfo.FileName 
  =
   
  "
  cmd.exe
  "
  ; p.StartInfo.UseShellExecute 
  =
   
  false
  ; p.StartInfo.RedirectStandardInput 
  =
   
  true
  ; p.StartInfo.RedirectStandardOutput 
  =
   
  true
  ; p.StartInfo.CreateNoWindow 
  =
   
  true
  ; p.Start(); 
   p.StandardInput.WriteLine(command); 
   p.StandardInput.WriteLine(
  "
  exit
  "
  ); p.WaitForExit(); 
  this
  .textBox1.Text
  =
  textBox1.Text
  +
   p.StandardOutput.ReadToEnd(); p.Close(); }

 

上面代码有几个不足，一是必须要exit那一句，否则就会死循环。再就是每次执行Execute执行cmd后，都必须等到cmd执行完且

cmd.exe进程退出，才能读到结果。有时候这样会让我们的应用程序失去操作的连续性。
事实上，通过两个线程，一个访问输入管道，一个访问输出管道，可以很容易实现持续性的效果，下面是一个Console程序：

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; using System.Diagnostics; namespace cmdtest { class Program { public static string cmd_str; public static string cmd_outstr; public static Process p = new Process(); static void Main(string[] args) { p.StartInfo.FileName = "cmd.exe"; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardInput = true; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardError = true; p.StartInfo.CreateNoWindow = true; p.Start(); cmd_str = ""; cmd_outstr = ""; Thread t1 = new Thread(new ThreadStart(DoCmdThread)); t1.Start(); Thread t2 = new Thread(new ThreadStart(OutCmdThread)); t2.Start(); while(true) { cmd_str = Console.ReadLine(); Thread.Sleep(10); if (cmd_str == "exit") break; } } public static void DoCmdThread() { while (true) { if (cmd_str == "exit") break; if (cmd_str != "") { p.StandardInput.WriteLine(cmd_str); //p.StandardInput.WriteLine("cd"); cmd_str = ""; } Thread.Sleep(1); } } public static void OutCmdThread() { while (true) { if (cmd_str == "exit") { p.StandardInput.WriteLine("exit"); p.WaitForExit(); p.Close(); break; } cmd_outstr = p.StandardOutput.ReadLine(); while(cmd_outstr != "") { Console.WriteLine(cmd_outstr); cmd_outstr = p.StandardOutput.ReadLine(); } char[] ch = new char[256]; int c = p.StandardOutput.Read(ch, 0, 256); if (c > 0) { Console.Write(ch,0,c); } Thread.Sleep(1); } } } }