// 三个尺寸的宽度
        // public static readonly int[] widths = new int[] { 61, 131, 408 };

        void InitialDefaultTypes()
        {
            ClearDefaultTypes();

            ImageType type = new ImageType();
            type.Width = 61;
            type.TypeName = "SmallImage";
            _defaultTypes.Add(type);

            type = new ImageType();
            type.Width = 131;
            type.TypeName = "MediumImage";
            _defaultTypes.Add(type);

            type = new ImageType();
            type.Width = 408;
            type.TypeName = "LargeImage";
            _defaultTypes.Add(type);

            if (this.ImageInfo != null && this.ImageInfo.BackupImage != null)
            {
                type = new ImageType();
                type.Width = -1;
                type.TypeName = "BackupImage";
                _defaultTypes.Add(type);
            }
        }
        // 三个尺寸的宽度
        // public static readonly int[] widths = new int[] { 61, 131, 408 };

        void InitialDefaultTypes()
        {
            _defaultTypes.Clear();

            ImageType type = new ImageType();
            type.Width = 61;
            type.TypeName = "SmallImage";
            _defaultTypes.Add(type);

            type = new ImageType();
            type.Width = 131;
            type.TypeName = "MediumImage";
            _defaultTypes.Add(type);

            type = new ImageType();
            type.Width = 408;
            type.TypeName = "LargeImage";
            _defaultTypes.Add(type);
        }