请问如何在startinfo.Arguments 里设置多条命令,比如我第一条命令是把文件打包成RAR,第二条命令再添加注释,怎么实现?
          string rarexe;       //WinRAR.exe 的完整路径
            RegistryKey regkey;  //注册表键
            Object regvalue;     //键值
            string cmd;          //WinRAR 命令参数
            ProcessStartInfo startinfo;
            Process process;
            try
            {
                regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command");
                regvalue = regkey.GetValue("");  // 键值为 "d:\Program Files\WinRAR\WinRAR.exe" "%1"
                rarexe = regvalue.ToString();
                regkey.Close();
                rarexe = rarexe.Substring(1, rarexe.Length - 7);  // d:\Program Files\WinRAR\WinRAR.exe                //Directory.CreateDirectory(path);
                //压缩命令,相当于在要压缩的文件夹(path)上点右键->WinRAR->添加到压缩文件->输入压缩文件名(rarName)
               
                 cmd = string.Format(" a -df  {0} {1} ", rarName, filname);
                 //在这里我怎么实现,再执行添加注册进RAR,若下面这行用cmd+=的话WINRAR的进程就无法关闭,程序就不能返回结果。怎么让startinfo.Arguments执行多条命令
                 //  cmd = string.Format(" c -z{0} {1} ", HttpContext.Current.Server.MapPath("~") + notepath, rarName);                startinfo = new ProcessStartInfo();
                startinfo.FileName = rarexe;
                startinfo.Arguments = cmd;                       //设置命令参数
                
                startinfo.WindowStyle = ProcessWindowStyle.Hidden;  //隐藏 WinRAR 窗口                startinfo.WorkingDirectory = rarPath;
                process = new Process();
                process.StartInfo = startinfo;
                
                process.Start();             
             
                process.WaitForExit(); //无限期等待进程 winrar.exe 退出                if (process.HasExited)
                {
                    flag = true;
                }
              
                 process.Close();
                 
                
            }
            catch (Exception e)
            {
                throw e;
            }