C#启动新进程并等待进程退出

try
            {
                Process process = Process.Start(processName);

                bool exit = false;
                while (true)
                {
                    exit = process.WaitForExit(100);
                    if (exit)
                    {
                        break;
                    }

                    System.Threading.Thread.Sleep(100);
                }
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine(ex.ToString());
            }