以下代码是一个项目的测试用例，调用外部的exe，exe放置在网站根目录下的ledExe文件夹下

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

namespace ledTest
{
    public partial class target : System.Web.UI.Page
    {
        string allOnExePath = string.Empty;
        string allOffExePath = string.Empty;
        string ledExePath = string.Empty;

        protected void Page_Load(object sender, EventArgs e)
        {
            string para = Request.Params[0];
            string bathPath = Request.PhysicalApplicationPath;
            string exePath = bathPath + @"ledExe\";

            allOnExePath = exePath + "ALLon.exe";
            allOffExePath = exePath + "Alloff.exe";
            ledExePath = exePath + "led.exe";

            TextBox1.Text = exePath ;
            
            switch (para)
            {
                case "allon": 
                    //这里插入调用allon方法代码
                    allon();
                    ;
                    break;
                case "alloff":
                    alloff();
                    ;
                    break;
                case "led":
                    led();
                    ;
                    break;
                default :
                   // TextBox1.Text = "未接收到参数";
                    ;
                    break;
            }
             
        }

        protected void allon()
        {
            TextBox1.Text = "执行ALLon.exe";
            startExe(allOnExePath, "9");
        }
        protected void alloff()
        {
            TextBox1.Text = "执行ALLoff.exe";
            startExe(allOffExePath,"9");
        }
        protected void led()
        {
            TextBox1.Text = "执行led.exe";
            startExe(ledExePath, "9 3 2 10");
        }

        protected void startExe(String para,String argu)
        {
            System.Diagnostics.Process p = new System.Diagnostics.Process();
            p.StartInfo.FileName = para;//需要启动的程序名 
            p.StartInfo.Arguments = argu;//启动参数 
            try
            {
                p.Start();//启动 

                if (p.HasExited)//判断是否运行结束 
                {
                    p.Kill();
                }
            }
            catch (Exception e1)
            {
                TextBox1.Text = "执行程序异常";
            }
            finally
            {
                
            }

        }

    }
}