说明：经常有朋友问如何在C#中运行一个dos命令，并截取输出、输出流的问题，这个问题我以前在Java中实现过，由于在C#中没有遇到过类似的 情况，为了避免每次别人问都要一遍一遍演示的情况，特地做了一个简单的例子，实现在WinForm中ping一个网站，并且将ping的结果显示在一个文本框中。

运行结果图

窗体设计器产生的代码：

namespace RunCMD
{
        partial class CMDForm
        {
                /// <summary>
                /// 必需的设计器变量。
                /// </summary>
                private System.ComponentModel.IContainer components = null;

                /// <summary>
                /// 清理所有正在使用的资源。
                /// </summary>
                /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
                protected override void Dispose(bool disposing)
                {
                        if (disposing && (components != null))
                        {
                                components.Dispose();
                        }
                        base.Dispose(disposing);
                }

Windows 窗体设计器生成的代码#region Windows 窗体设计器生成的代码

                /// <summary>
                /// 设计器支持所需的方法 - 不要
                /// 使用代码编辑器修改此方法的内容。
                /// </summary>
                private void InitializeComponent()
                {
                        this.label1 = new System.Windows.Forms.Label();
                        this.txtCommand = new System.Windows.Forms.TextBox();
                        this.btnExecute = new System.Windows.Forms.Button();
                        this.tbResult = new System.Windows.Forms.TextBox();
                        this.SuspendLayout();
                        //    
                        // label1
                        //    
                        this.label1.AutoSize = true;
                        this.label1.Location = new System.Drawing.Point(6, 11);
                        this.label1.Name = "label1";
                        this.label1.Size = new System.Drawing.Size(29, 12);
                        this.label1.TabIndex = 0;
                        this.label1.Text = "ping";
                        //    
                        // txtCommand
                        //    
                        this.txtCommand.Location = new System.Drawing.Point(41, 8);
                        this.txtCommand.Name = "txtCommand";
                        this.txtCommand.Size = new System.Drawing.Size(269, 21);
                        this.txtCommand.TabIndex = 1;
                        //    
                        // btnExecute
                        //    
                        this.btnExecute.Location = new System.Drawing.Point(316, 6);
                        this.btnExecute.Name = "btnExecute";
                        this.btnExecute.Size = new System.Drawing.Size(75, 23);
                        this.btnExecute.TabIndex = 2;
                        this.btnExecute.Text = "执行";
                        this.btnExecute.UseVisualStyleBackColor = true;
                        this.btnExecute.Click += new System.EventHandler(this.btnExecute_Click);
                        //    
                        // tbResult
                        //    
                        this.tbResult.Location = new System.Drawing.Point(8, 47);
                        this.tbResult.Multiline = true;
                        this.tbResult.Name = "tbResult";
                        this.tbResult.ScrollBars = System.Windows.Forms.ScrollBars.Both;
                        this.tbResult.Size = new System.Drawing.Size(383, 292);
                        this.tbResult.TabIndex = 3;
                        //    
                        // CMDForm
                        //    
                        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
                        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
                        this.ClientSize = new System.Drawing.Size(403, 364);
                        this.Controls.Add(this.tbResult);
                        this.Controls.Add(this.btnExecute);
                        this.Controls.Add(this.txtCommand);
                        this.Controls.Add(this.label1);
                        this.Name = "CMDForm";
                        this.Text = "运行Command的例子";
                        this.ResumeLayout(false);
                        this.PerformLayout();

                }

                #endregion

                private System.Windows.Forms.Label label1;
                private System.Windows.Forms.TextBox txtCommand;
                private System.Windows.Forms.Button btnExecute;
                private System.Windows.Forms.TextBox tbResult;
        }
}

关键部分代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;

namespace RunCMD
{
        /**
         * 作者：周公
         * blog:http://blog.csdn.net/zhoufoxcn
         * 日期：2007-07-07
         *    
         * */
        public partial class CMDForm : Form
        {
                public CMDForm()
                {
                        InitializeComponent();
                }

                private void btnExecute_Click(object sender, EventArgs e)
                {
                        tbResult.Text = "";
                        ProcessStartInfo start = new ProcessStartInfo("Ping.exe");//设置运行的命令行文件问ping.exe文件，这个文件系统会自己找到
                        //如果是其它exe文件，则有可能需要指定详细路径，如运行winRar.exe
                        start.Arguments = txtCommand.Text;//设置命令参数
                        start.CreateNoWindow = true;//不显示dos命令行窗口
                        start.RedirectStandardOutput = true;//
                        start.RedirectStandardInput = true;//
                        start.UseShellExecute = false;//是否指定操作系统外壳进程启动程序
                        Process p=Process.Start(start);
                        StreamReader reader = p.StandardOutput;//截取输出流
                        string line = reader.ReadLine();//每次读取一行
                        while (!reader.EndOfStream)
                        {
                                tbResult.AppendText(line+" ");
                                line = reader.ReadLine();
                        }
                        p.WaitForExit();//等待程序执行完退出进程
                        p.Close();//关闭进程
                        reader.Close();//关闭流
                }
        }
}

本demo全部代码：http://dl2.csdn.net/down4/20070707/07162550531.rar