void ConvertProject()

        {

            List<BaseProjectConverter> convertors = new List<BaseProjectConverter>();

            Assembly archiverAssembly = this.GetType().Assembly;

            foreach (Type type in archiverAssembly.GetTypes())

            {

                if (type.IsSubclassOf(typeof(BaseProjectConverter)))                     //是否是子类

                    convertors.Add(Activator.CreateInstance(type) as BaseProjectConverter);

            }

            if (CurrentVersion > Version)

            {

                for (int i = ; i < convertors.Count; i++)

                {

                    BaseProjectConverter conv = convertors[i];

                    if (conv.AcceptedVersion == Version && conv.ResultVersion <= CurrentVersion)

                    {

                        conv.Convert(this);

                        convertors.RemoveAt(i);

                        i = ;

                    }

                }

            }

            else

            {

                for (int i = ; i < convertors.Count; i++)

                {

                    BaseProjectConverter conv = convertors[i];

                    if (conv.ResultVersion == CurrentVersion && conv.AcceptedVersion >= Version)

                    {

                        conv.ConvertBack(this);

                        convertors.RemoveAt(i);

                        i = ;

                    }

                }

            }

        }