c#运行程序回显

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);
        }

        #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.youkuaiyun.com/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
        }
    }
}