Working with QR Code Encoder and Decoder

Question

Hello everyone and thanks for the help in advance. I am trying to use the QR decoder in this article https://www.codeproject.com/Articles/1250071/QR-Code-Encoder-and-Decoder-Csharp-Class-Library-f. My code looks like:

string fileName = @"C:\myfile.png";  
QRDecoder Decoder = new QRDecoder();  
Bitmap bitmap = new Bitmap.(fileName);            
QRCodeResult[] ResultArray = Decoder.ImageDecoder(bitmap);  

However, I receive an error "Cannot implicitly convert type 'byte[][]' to 'QRReaderFromImage.QRCodeResult". I've tried different combinations of System.Drawing.Image without success. Hoping someone has experience working with this. Any help would be appreciated.