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
        }
    }
}