/// <summary>
        /// Convert packed String to Image.
        /// </summary>
        /// <param name="str">String for converting.</param>
        /// <returns>Result Image.</returns>
        public static Image PackedStringToImage(string str)
        {
            if (string.IsNullOrEmpty(str))
            {
                return(null);
            }

            byte[] bytes = Convert.FromBase64String(StiGZipHelper.Unpack(str));
            return(BytesToImage(bytes));
        }
        /// <summary>
        /// Convert Image to packed String.
        /// </summary>
        /// <param name="image">Image for converting.</param>
        /// <returns>Result string.</returns>
        public static string ImageToPackedString(Image image)
        {
            if (image == null)
            {
                return(string.Empty);
            }

            byte[] bytes = ImageToBytes(image);
            return(StiGZipHelper.Pack(Convert.ToBase64String(bytes)));
        }