win-universal-app

问题 I am currently working on a Windows 10 UWP App. The App needs to Check if a certain PDF File exists called "01-introduction", and if so open it. I already have the code for if the file does not exist. The Code Below is what i currently have: try { var test = await DownloadsFolder.CreateFileAsync("01-Introduction.pdf", CreationCollisionOption.FailIfExists); } catch { } This code Does not work correctly because to check if the file exists here, I attempt to create the file. However if the file

问题 I am beginner. I have below simplest code: <Page x:Class="ClientFramework.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:ClientFramework" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> </Grid> </Page> I test it in

来源： https://stackoverflow.com/questions/49486937/call-frame-control-from-viewmodel-on-windows-universal-app

来源： https://stackoverflow.com/questions/36052992/media-capture-background-task-uwp-windows-10

来源： https://stackoverflow.com/questions/54608597/disable-keyboard-interaction-with-uwp-app

来源： https://stackoverflow.com/questions/54608597/disable-keyboard-interaction-with-uwp-app

来源： https://stackoverflow.com/questions/37011011/uwp-creating-a-data-bound-tooltip-on-an-image-in-xaml

来源： https://stackoverflow.com/questions/35392931/what-is-xaml-generated-break-on-unhandled-exception-and-app-g-i-cs-file

问题 I'm writing a custom DataTemplateSelector for a ComboBox control and I'll need to use it to display different DateTemplates for different kind of objects, in both the closed and open modes for the ComboBox . Here's the DataTemplateSelector I came up with: public class ComboBoxTypedDataTemplateSelector : DataTemplateSelector { public IEnumerable<DataTemplate> SelectedTemplates { get; set; } public IEnumerable<DataTemplate> DropDownTemplates { get; set; } protected override DataTemplate

问题 I'm writing a custom DataTemplateSelector for a ComboBox control and I'll need to use it to display different DateTemplates for different kind of objects, in both the closed and open modes for the ComboBox . Here's the DataTemplateSelector I came up with: public class ComboBoxTypedDataTemplateSelector : DataTemplateSelector { public IEnumerable<DataTemplate> SelectedTemplates { get; set; } public IEnumerable<DataTemplate> DropDownTemplates { get; set; } protected override DataTemplate