Question

我正在 Windows-10 笔记本电脑上的 VisualStudio 2015 中使用C＃for BluetoothLE创建客户端应用。

我使用 Windows.Devices.Bluetooth.GenericAttributeProfile 时遇到问题，问题是我的代码有编译错误，说 GattDeviceServicesResult 无法找到。

- ＆GT;我已经添加了Valdimir Postel的包 UwpDesktop 10.0.14393.3 ...（在安装此版本之前＆＃34;使用Wndows.Devices.Bluetooth＆＃34;无效）

- ＆GT;然后，当我尝试打开其中一个示例时，我添加了VisualStudio推荐的SDK，Windows工具包（所以我接受了构建该项目的建议和VS安装的大约9GB的包）

- ＆GT;现在我可以使用一些蓝牙API，我可以扫描并连接到BLE设备，但我不能使用类来处理服务和特性，因为 GattDeviceServicesResult 和<找不到强> GattCharacteristicsResult 类型。虽然这些在MSDN网站上提到

- ＆GT;在论坛中搜索我才知道我需要添加一个参考 System.Runtime.WindowsRuntime.dll ，我通过添加VS的参考实用程序浏览到正确的文件夹，我试图添加这个并且它确实什么都没有，在我选择了dll后点击“添加”＃39;没有任何反应。（添加引用不是添加此dll）。

例如，如果我选择其他dll并尝试添加，那就可以了！

有人可以帮我解决这个问题，

using Windows.Devices.Bluetooth;
using Windows.Devices.Bluetooth.GenericAttributeProfile;
using Windows.Devices.Bluetooth.Advertisement;

Int16 uuid_count = 0;
BluetoothLEAdvertisement[] ble_adv = new BluetoothLEAdvertisement[5];
BluetoothLEAdvertisementReceivedEventArgs[] ble_received_adv = new BluetoothLEAdvertisementReceivedEventArgs[5];
BluetoothLEDevice bluetooth_LE_Device;

GattDeviceServicesResult result_service;// This line does not compile 
//Error: CS0246 the type name 'GattDeviceServicesResult ' could not be found
// I am adding reference to "System.Runtime.WindowsRuntime" as mentioned in some solutions 
// the reference does not seems to be added at first when I click add button, but I can see the reference dll being mentioned in solution explorer (assuming it's been added)

// using this to scan available devices
private void scann_ble()
{
    var watcher = new BluetoothLEAdvertisementWatcher();
    watcher.Received += Watcher_Received;

    watcher.AdvertisementFilter.Advertisement.ServiceUuids.Clear();

    watcher.Start();
    while (true)
    {
        Thread.Sleep(10000);
        break;
    }
    watcher.Stop();
}

// receiver event to collect addresses of available devices
private void Watcher_Received(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs args)
{
    bool update_adv = true;
    Int16 i = 0;

    if(uuid_count < 5)
    {
        if (uuid_count > 0)
        {
            while (i < uuid_count)
            {
                if (ble_received_adv[i].BluetoothAddress == args.BluetoothAddress)
                    update_adv = false;

                    i++;
            }
        }

        if(update_adv != false)
            ble_received_adv[uuid_count++] = args;
    }
}

// now connecting and checking available services
// as per "https://docs.microsoft.com/en-us/windows/uwp/devices-sensors/gatt-client" 
private async void BLE_connect_button_Click(object sender, EventArgs e)
{
    int i = 0;
    i = BLE_device_grid_view.CurrentCell.RowIndex;  // getting index from item selected in gridView
    bluetooth_LE_Device = await BluetoothLEDevice.FromBluetoothAddressAsync(ble_received_adv[i].BluetoothAddress);
    // Connection works fine, I can see it on my peripheral device

    //get services - This is not working
    result_service = bluetooth_LE_Device.GetGattServicesAsync();

    if (result_service.Status == await GattCommunicationStatus.Success)
    {
        var services = result_service.Services;
            // ...
    }
}

我正在使用UwpDesktop包。

＆＃34; GattDeviceServicesResult＆＃34;无法找到

0 个答案: