private void InitializeValues()
{
if (_Values != null)
return;
if (Data == null)
{
_Values = new Collection<ExifValue>();
return;
}
ExifReader reader = new ExifReader();
_Values = reader.Read(Data);
_InvalidTags = new List<ExifTag>(reader.InvalidTags);
_ThumbnailOffset = (int)reader.ThumbnailOffset;
_ThumbnailLength = (int)reader.ThumbnailLength;
}