From Soft Service Company:
Wireless Communication Library .NET Edition brings the power features of Bluetooth, IrDA and WiFi technologies to your .NET applications. Develop Bluetooth Proximity Application in just a few days. Save your time. WCL includes all the things you need for using Bluetooth, IrDA and WiFi in your .NET applications. Discover devices, send and receive files, bulk file sending and lots of other features like enumerating WiFi networks, measure WiFi networks signal quality and RSSI level, support for Bluetooth server applications which can be used for BT chats, receiving files and other. You can develop Kiosk application in few hours.