注册表获取exe位置+ Process类启动exe+参数让exe打开指定文件

  /// <summary>
        /// 启动本机的cad,并且在cad中浏览dwg图
        /// </summary>
        /// <param name="path">cad.exe的位置</param>
        /// <param name="dwgfile">dwgfile的完整路径</param>
        public void StartCad2004(string path,string dwgfile)
        {
            Process p = new Process();
            p.StartInfo.FileName = path;  //启动本机的cad
            p.StartInfo.Arguments = dwgfile;//设置cad要打开的dwg文件
              p.Start();////启动本机的cad
        }

       /// <summary>
       /// 获取cad路径
       /// </summary>
       /// <param name="path">从注册表中读取的cad位置</param>
       /// <returns></returns>
        public bool GetCadPath(out string path)
        {
            path = "";
            RegistryKey key_localMachine = Registry.LocalMachine;
            //RegistryKey key_cad = key_localMachine.OpenSubKey("SOFTWARE\\Autodesk\\AutoCAD\\R16.2\\ACAD-4001:804\\", false);//cad2006注册表地址
            //RegistryKey key_cad = key_localMachine.OpenSubKey("SOFTWARE\\Autodesk\\AutoCAD\\R16.0\\ACAD-201:804\\", false);//cad2004注册表地址
            //任意版本cad启动程序
            /*这个值的特点, "exe" "dwg文件"  
             * 
             */
            RegistryKey key_cad = key_localMachine.OpenSubKey("SOFTWARE\\Classes\\Applications\\acad.exe\\shell\\open\\command", false);
            if (key_cad != null)
            {
                string cadpath = key_cad.GetValue("").ToString(); //获取启动路径
                MatchCollection mc= Regex.Matches(cadpath, "\"(?<cadpath>.*)\" "); //仅获取第一个acad.exe路径
                cadpath = mc[0].Groups["cadpath"].Value;
                path = cadpath;
                return true;
            }
            return false;
        }