c#UWP BluetoothLEDevice.FromIdAsync System.IO.FileNotFoundException

我正在尝试为我的手机编写一个连接到可移动设备的应用程序

设备已配对，我编辑了appxmanifest以启用蓝牙功能

但当我运行应用程序时，下面的代码

await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);

结果引发异常：mscorlib.ni.dll中的“System.IO.FileNotFoundException”

有人知道我做错了什么吗

谢谢

var deviceList = await DeviceInformation.FindAllAsync(GattDeviceService.GetDeviceSelectorFromUuid(GattServiceUuids.GenericAccess), null);
int count = deviceList.Count();
if (count > 0)
{
    var deviceInfo = deviceList.Where(x => x.Name == "XC-Tracer").FirstOrDefault();
    if (deviceInfo != null)
    {
        if (deviceInfo.IsEnabled)
        {
            var bleDevice = await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);
            var deviceServices = bleDevice.GattServices;
        }
    }
}

---

我能够通过使用GattDeviceService而不是BluetoothLEDevice类来实现这一点：

var deviceList = await DeviceInformation.FindAllAsync(GattDeviceService.GetDeviceSelectorFromUuid(GattServiceUuids.GenericAccess), null);
int count = deviceList.Count();
if (count > 0)
{
    var deviceInfo = deviceList.Where(x => x.Name == "XC-Tracer").FirstOrDefault();
    if (deviceInfo != null)
    {
        if (deviceInfo.IsEnabled)
        {
            var bleDevice = await GattDeviceService.FromIdAsync(deviceInfo.Id);
            var deviceServices = bleDevice.GattServices;
        }
    }
}