UWP C# To Display AudioDevice DeviceInformation to Textblock

Question

I am having some issue to display my saved USB Audio Adapter name on a textblock when i load it from ApplicationDataContainer

when selecting the from the listbox , the deviceId is able to be displayed properly on the textblock

private void audioRenderList_P_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        mediaPlayer_CH1.AudioDevice = renderDeviceList_P[audioRenderList_P.SelectedIndex];
        renderDeviceName_P.Text = renderDeviceList_P[audioRenderList_P.SelectedIndex].Name.ToString();
    }

if (mediaPlayer_CH1.AudioDevice.Id != null)
        {
            Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
            Windows.Storage.StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;

            localSettings.Values["audioRenderSettings_P"] = mediaPlayer_CH1.AudioDevice.Id;
        }

However, when loading of saved audio deviceId it couldn't be displayed as readable characters;

    Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
    Windows.Storage.StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;

    if (localSettings.Values["audioRenderSettings_P"] != null)
    {
        var audioSource = localSettings.Values["audioRenderSettings_P"] as string;
        mediaPlayer_CH1.AudioDevice = await DeviceInformation.CreateFromIdAsync(audioSource);
        renderDeviceName_P.Text = audioSource;
    }
    else renderDeviceName_P.Text = "Select Audio Device ..";

Please help. Thank you.

Answer 1

In SelectionChanged event, you are displaying the Name and saving the Id . But when loading, you are showing Id , they are not same.

When loading, you can change code to:

var audioSource = localSettings.Values["audioRenderSettings_P"] as string;
mediaPlayer_CH1.AudioDevice = await DeviceInformation.CreateFromIdAsync(audioSource);
renderDeviceName_P.Text = mediaPlayer_CH1.AudioDevice.Name.ToString();

Best regards.