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Bluetooth LE - Prevent Windows from automatically discovering & reading from all characteristics after PairAsync
This method to pair and exchange bond keys results in the Windows BLE stack automatically enumerating and reading a bunch of characteristic values. We want to prevent this behavior and only have the application read from characteristics we ask it to or…
On my visual studio community 2022 I have this error on my uwp app on Design on MainPage.xaml
On my visual studio community 2022 I have this error on my uwp app on Design on MainPage.xaml System.Exception The app didn't start. (Exception from HRESULT: 0x8027025B) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at…
Windows.Devices.Bluetooth.dll crash when exit app.
I use BluetoothLEAdvertisementWatcher.Received() to register scan callback and start scan LE, after scanning, I free the callback and stop scan. It works well, but when exit app, below crash will happend, it seems an inner crash in…
Trying to open a device using HidDevice FromIdAsync in UWP always returns null unless using FileAccessMode.Read
I can confirm that my HID device can have read and write capabilities, because this has been verified in WPF application, where one Endpoint can read and the other can read and write. I thought it might be a permissions issue, but I defined almost every…
Add ellipsis in placeholder UWP
Hi everyone. I have a textbox with a placeholder and a button inside. I'd like to add an ellipsis at the end of the placeholder text but before the button. If the placeholder text is longer than the area available, the ellipsis must be added. The image…
mru.CheckAccess() confirms acces to not existing file
Hello, I have an ListView where I show recently used files. Now wehen user clicks on any item i read selected file. I use such code. private async void lvRecentlyUsedFiles_ItemClick(object sender, ItemClickEventArgs e) { if…
UWP App thumbnail preview custom title
I have an UWP app and i have option to open different pages in separate window and i want to each window with different title and i achieve it using "ApplicationView.GetForCurrentView()". But for the thumbnail preview it shows the display name…
ESim class usage and instantiation
Hello. I need to instantiate the ESim class to be able to use it for the purpose of profile handling. I am trying to run the UWP application from Visual Studio 2022 and to instantiate ESimWatcher using ESimManager.TryCreateESimWatcher() method. This…
How to resize HoloLens 2D application window size via code
I want to customize windows size of my 2D HoloLens UWP application. I have tried below code in my .NET application. This doesn't work in HoloLens, but it works in Windows PC. ApplicationView.PreferredLaunchViewSize = new Windows.Foundation.Size(950,…
Bluetooth LE - Programmatically determine if a peripheral has lost its side of the bond keys
A common scenario in Bluetooth LE is for one side of a bonded pair of devices to lose their side of previously exchanged bond keys. The Bluetooth LE spec states that the peripheral shall send a LL_REJECT_EXT_IND with error code 6, "PIN or Key…
How to use TextBlock focus to allow Screen reader / Narrator application reads the content
We are using custom TextBlock control in our app to display the descriptions to our users. Using Keyboard 'tab', the focus is not received, and the screen reader / Narrator application does not read the content. Are there any solutions to address this…
Closed captions of MediaPlayerElement causes video lags on some displays
Basic information We do use MediaPlayerElement within UWP platform to play the videos. However, on some display devices, using closed captions (subtitles) leads to video lagging. Specifically, I was able to confirm that issue occurs on: Epson…
Changing ListViewItemTemplate on user click
Hello, I have a ListView with item template selector. Now user clicks on any item, DataTemplate of clicked item should change, without reading items source again. How to improve my code to meet such task. <Page ... > <Page.Resources> …
Microsoft store UWP App
Hello UWP experts, How can we identify from the UWP code that the user has installed from the Microsoft store or from the sideload packages or dev build process from VS? Thanks
Trouble Using Latest Universal Windows Application Runtime
I rebuilding an older C++ application with Visual Studio Community Edition. I haven't worked on in a few years. I'm using the latest version of Visual Studio which I installed today. I'm running Windows 10. I ran Windows Update and it told me I was up to…
Narrator can't read Textblock in UWP app
I have a popup that contains some control. Now I want the narrator to read "Save Settings(1/6) please name your favorite setting". Because these are TextBlock, can't focus, so the narrator doesn't work. What can I do?
Binding columns and rows width in ListView
Hello, I am trying to bind ListView items columns heights to ListView Header columns heights. I typed such XAML, but it doesnt work. Is there any way to do my task? I prefer x:Bind but Binding is acceptable too. <ListView x:Name="lvLinks"…
Keyboard navigation between Panels
I have such XAML: <StackPanel TabFocusNavigation="Cycle" XYFocusKeyboardNavigation="Enabled" > <StackPanel> <TextBox x:Name="H" …
UWP VPN Plugin Issue: RasDialA Error (ERROR_PORT_NOT_AVAILABLE)
Overview: We have developed a UWP VPN Plugin, based on the samples We connect to the VPN from a Win32 application using the RasDialA/RasHangUpA APIs (not using the VpnManagementAgent WinRT API because it isn't fully functional from non-packaged…