Using Visual Studio Express, COPC dll to created simple SCADA application. COPC dll is not free. You can trying COPC dll for 30 days.

Download COPC dll at http://www.eda.co.th/COPC.htm

Download example project at https://sites.google.com/site/gen32exam/home/COPCDLL_Example.zip?attredirects=0&d=1

Quick start VDO (Create SCADA application with C#)
https://www.youtube.com/watch?v=X8_VtoVlwxA