static FieldInfo GetDecoderField(BitmapDecoder decoder, string fieldName)
{
FieldInfo streamField = decoder.GetType().GetField(fieldName, BindingFlags.NonPublic | BindingFlags.Instance);
if (streamField == null)
{
throw new Exception(string.Format("{0}.{1} ({2})", decoder.GetType().FullName, fieldName, decoder.GetType().AssemblyQualifiedName));
}
return(streamField);
}