如何在 WPF 中扫描蓝牙设备？

Question

I need to get a list of bluetooth devices in pairing mode. UWP documentation shows a clear way of doing this; but, not for WPF. I am using this in a WPF async method-

var devices = await 
              DeviceInformation.FindAllAsync(                
                                             RfcommDeviceService.GetDeviceSelector(
                                                  RfcommServiceId.SerialPort));

        foreach (var device in devices)
        {
            listbox.Items.Add(device);
        }

I am getting does not contain a definition for 'GetAwaiter' exception.

How can I get all bluetooth devices in pairing mode, preferably gamepads or controllers?

Answer 1

DeviceInformation.FindAllAsync does not return a task, and can't be awaited.

However you can call .AsTask() and await that.

var asyncOp = DeviceInformation.FindAllAsync(RfcommDeviceService.GetDeviceSelector(RfcommServiceId.SerialPort));

var devices = await asyncOp.AsTask();

Note: I haven't tested this.