c# process 输入输出

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Diagnostics;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
Process p = new Process();
p.StartInfo.FileName = "format.com";
p.StartInfo.Arguments = " G: /FS:FAT /Q";
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.CreateNoWindow = true;//true表示不显示黑框，false表示显示dos界面
p.StartInfo.UseShellExecute = false;

p.EnableRaisingEvents = true;

p.Exited += new EventHandler(p_Exited);
p.OutputDataReceived += new DataReceivedEventHandler(p_OutputDataReceived);
p.ErrorDataReceived += new DataReceivedEventHandler(p_ErrorDataReceived);

p.Start();
p.StandardInput.WriteLine("");
p.StandardInput.WriteLine("");

//开始异步读取输出
p.BeginOutputReadLine();
p.BeginErrorReadLine();

//调用WaitForExit会等待Exited事件完成后再继续往下执行。
p.WaitForExit();
p.Close();

Console.WriteLine("exit");

}

void p_OutputDataReceived(Object sender, DataReceivedEventArgs e)
{
//这里是正常的输出
Console.WriteLine(e.Data);

}

void p_ErrorDataReceived(Object sender, DataReceivedEventArgs e)
{
//这里得到的是错误信息
Console.WriteLine(e.Data);

}

void p_Exited(Object sender, EventArgs e)
{
Console.WriteLine("finish");
}

}
}