string fileName = Environment.GetEnvironmentVariable("windir") + @"\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe";//v2.0.50727為要設置的asp.net版本號如果是asp.net1.1請改為v1.1.4322

                   ProcessStartInfo startInfo = new ProcessStartInfo(fileName);
                   //处理目录路径
                   string path ="要設置的網站或虛擬目錄的路徑，如W3SVC/1/ROOT/EHRSNET"

                   int index = path.IndexOf("W3SVC");
                   path = path.Remove(0, index);
                   //启动aspnet_iis.exe程序,刷新教本映射

                   startInfo.Arguments = "-s " + path;
                   startInfo.WindowStyle = ProcessWindowStyle.Hidden;
                   startInfo.UseShellExecute = false;
                   startInfo.CreateNoWindow = true;
                   startInfo.RedirectStandardOutput = true;
                   startInfo.RedirectStandardError = true;
                   Process process = new Process();
                   process.StartInfo = startInfo;
                   process.Start();
                   process.WaitForExit();
                   string errors = process.StandardError.ReadToEnd();
                   if (errors != string.Empty)
                       throw new Exception(errors);
                   Console.WriteLine(process.StandardOutput.ReadToEnd());