This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
Try to download some demo with simple C# code to generate the barcode. You just need to check the properties of the 2D barcode you need to create, and then set the barcode type, barcode encoding data, barcode event according to the properties and simple code listed on the demo. And usually I will get full version of the codes in the purchased one.