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 protected void Button1_Click(object sender, EventArgs e)
        {
            // 调用代码
            string[] cmd = new string[] { "appcmd recycle apppool /apppool.name: DQSite(8000)" };
            //MessageBox.Show(Cmd(cmd));
            TextBox1.Text = Cmd(cmd);
            CloseProcess("cmd.exe");
        }

        /// <summary>
        /// 运行CMD命令
        /// </summary>
        /// <param name="cmd">命令</param>
        /// <returns></returns>
        public static string Cmd(string[] cmd)
        {
            Process p = new Process();
            p.StartInfo.FileName = "cmd.exe";
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.RedirectStandardInput = true;
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.RedirectStandardError = true;
            p.StartInfo.CreateNoWindow = true;
            p.Start();
            p.StandardInput.AutoFlush = true;
            for (int i = 0; i < cmd.Length; i++)
            {
                p.StandardInput.WriteLine(cmd[i].ToString());
            }
            p.StandardInput.WriteLine("exit");
            string strRst = p.StandardOutput.ReadToEnd();
            p.WaitForExit();
            p.Close();
            return strRst;
        }

        /// <summary>
        /// 关闭进程
        /// </summary>
        /// <param name="ProcName">进程名称</param>
        /// <returns></returns>
        public static bool CloseProcess(string ProcName)
        {
            bool result = false;
            System.Collections.ArrayList procList = new System.Collections.ArrayList();
            string tempName = "";
            int begpos;
            int endpos;
            foreach (System.Diagnostics.Process thisProc in System.Diagnostics.Process.GetProcesses())
            {
                tempName = thisProc.ToString();
                begpos = tempName.IndexOf("(") + 1;
                endpos = tempName.IndexOf(")");
                tempName = tempName.Substring(begpos, endpos - begpos);
                procList.Add(tempName);
                if (tempName == ProcName)
                {
                    if (!thisProc.CloseMainWindow())
                        thisProc.Kill(); // 当发送关闭窗口命令无效时强行结束进程
                    result = true;
                }
            }
            return result;
        }

使用网页形式来刷新应用程序池可以防止多人抢线远程登陆，也更方便，可以在一个页面上完成刷新，测试

扩展应用：

用于以web方式管理站点，可开通、删除、设置，做主机管理软件

参考：

http://www.cnblogs.com/njnudt/archive/2009/12/03/1616135.html