How can I find out a COM port number of a bluetooth device in c#?

Question

My company developed a device that communicates with a PC via Bluetooth using a virtual COM port.

Now we need a user to pair a device with a PC (MS Windows OS) firs

Answer 1

So, to get the information about a remote device including its name, using 32feet.NET do:

BluetoothAddress addr = ... ...
BluetoothDeviceInfo info = new BluetoothDeviceInfo(addr);
string name = info.DeviceName;

If not using the library you'll have to P/Invoke Win32's BluetoothGetDeviceInfo.