As a follow-up to his article last week about controlling an Arduino via ASP.NET C# applications, #ben has described the opposite - that is how to get data from the Arduino to the web application. The provided demonstration builds on the previous examples by describing how to feed back data once to the controlling web application for confirmation. This would also provide the framework for other forms of data feeds from the Arduino back to the application.
If you found the project above interesting - but not sure how to start with Arduino - then the best way to learn is with our Experimenter's Kit for Arduino:
The package includes a wide variety of parts, sensors and modules including: a servo motor, lights, buttons, switches, sound, sensors, breadboard, wires and more. Furthermore a Freetronics Eleven Arduino-compatible board is included to make this an extensive hobby experimenter, inventor and starter kit. However we don't leave you alone to figure it all out, included is a great project and instruction booklet, plus access to a supporting web page and software examples. In other words - this is everything you need to get started for a fun range of electronics and Arduino related projects!
So to get started or for more information and to order, check out the product page.