How to catch a button press on a bluetooth headset?

Question

Bluetooth

There is a bluetooth adapter and wireless headphones ( Xiaomi Sport ). Connected without problems. The headphones themselves and their microphone were determined.
There is a function button on the headphones (used to turn on and off). With a short press on it, you can pause and resume the work (on the phone). It doesn't work on a computer.
So here's the problem:
As I understand it, with a short press of the button, the headphones send a signal to the device. So this signal must be caught (this is a short press of a button)
How can this be implemented in C # under .NET?