iOS Question zlib.h for V10

I need help with a crc32 function on IOS From these link http://stackoverflow.com/questions/4115059/get-crc-checksum-of-an-nsdata-in-objective-c http://ios-blog.co.uk/tutorials/quick-tips/quick-tip-converting-nsstring-to-nsdata/ I try this code Dim NativeMe As NativeObject = Me...