.NET library to download BSE and NSE stock quotes

Build a .NET class library to download real-time (delayed) and historical quotes from NSE ([login to view URL]) and BSE ([login to view URL]) for stocks and futures / options (F&O). This data is available for download (CSV format) from the NSE and BSE websites. BSE Market Data - [login to view URL] NSE Market Data - [login to view URL] [login to view URL] [login to view URL] 1) Programmed either in VB.NET or C#. 2) Object oriented framework with multi-threading and robust error-handling support. 3) Do not use any commercial 3rd party libraries / tools. Using open-source libraries / tools is ok as long as license model is clearly stated. This class library will be used for in-house research tools. See the text file for more details. Prefer some who has worked in this field. If you have questions, feel free to ask.