uwp

问题 I have several different ViewModels that I would like to display in the same view (MainPage.xaml). I'm new to this and don't know how to do it. I have tried to create a MainViewModel: public class MainViewModel : ViewModelBase, INotifyPropertyChanged { WeatherViewModel weatherView = new WeatherViewModel(); ForecastViewModel forecastViewModel = new ForecastViewModel(); DeparturesViewModel departuresViewModel = new DeparturesViewModel(); CalenderViewModel calenderViewModel = new

问题 I need to print a single xaml-page within a multiple page UWP-app. I only get as far as printing this page, but when leaving that page and trying to navigate back to it the following exception is thrown: For the PrintTaskRequested-event only one handler at a time can be registered (translated). The MS-instruction says that you have to disconnect the printing event handlers when you leave the printing page. Strange enough I found 2 short and understandable uwp-printing examples here on

问题 I'm trying to create an AppBarButton where the icon property is a FontIcon but the specific icon I want to use is not working; it is showing as a rectangle. I'm creating a UWP app in C# and I'm trying to create a button with the QR Code (Unicode point ED14) icon from the Segoe MDL2 Assets font but when I enter the icon identifier into the Glyph property of the FontIcon element it simply shows the placeholder rectangle as if the font is not installed. Every other icon I have used in my app

问题 Hopefully this isn't a stupid question but I've spent several hours looking for this answer with no results. Basically, I want to be able to control the appearance of hovered and pressed buttons. I've included the code for one of my buttons below. Here are my issues I have other buttons in my UI that I want to be able to assign this same style to I'd rather not copy/paste all this code because if I ever need to change the colors later, I'm screwed The <style> tag doesn't work because it can't

问题 I need to find out how to convert a BitmapImage object into a SoftwareBitmap in order to save it to a file without losing resolution as I would do with RenderTargetBitmap. I have the following situation: private void TakePic() { BitmapImage currentImage = new BitmapImage(new Uri("http://.../image.jpg")); ImageControl.Source = currentImage; } private void SavePic() { StorageFile file = await folder.CreateFileAsync(...); using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode

问题 How can I write into a TextBlock on a different page? So far it only works with TextBlocks on the same page. The async function is in Page_1 . The TextBlock is on Page_2 . public async void Serial() { string rxBuffer; //code //code //code while (true) { textblock_DebugRx_Gas_live.Text = rxBuffer; } } 回答1: write string to textblock on different page in C#, UWP If the two page display in foreground at same time like following. <Grid> <Grid.RowDefinitions> <RowDefinition Height="1*"/>

问题 I am designing an uwp app with multiple instances, I want to sync settings across all instances so that when I change a setting in one instance all the instances produce the same effect. How do I go about this?? 回答1: Create an out-of-proc appservice as explained in this article, disable multiinstance for appservice. In the appservice code along with storing the created appservice connection store a static list of all the appservice created by all the new app instance. Whenever settings is

问题 AutoSuggestBox suggestion list aren't closing during scroll which causes weird UI issue. The issue will look like the one below, which i have taken from the default XAML Controls Gallery application. A simple AutoSuggestBox i have tested <AutoSuggestBox TextChanged="AutoSuggestBox_TextChanged" Width="300" /> Is there a better way to fix this other than using ScrollViewer.ViewChanged 回答1: AutoSuggestBox sugestion lists not closing during scroll in UWP We could not set the Popup

问题 I find out that the tabs of TabView can be scrolled when there is an overflow. And I can scroll them using the buttons I circled out in the image I posted above. However, I can't find out how to modify them. I just want to set their BorderThickness to 0. Can someone point them out in the source style of my TabView ? 回答1: The RepeatButton in your PlaylistTabView.xaml represents the style of the Button which you circled out, so you can set the BorderThickness to 0 in it. Note that there are two

问题 I'm customize a slider to making seeking bar for video. What I want is that when I touch the thumb the video stops. Then I can drag the thumb and display the video corresponding to the slider's value. This is my Slider in XAML <Slider Style="{StaticResource SliderStyle1}" Grid.Column="1" x:Name="volumeSlider" Width="Auto" VerticalAlignment="Center" ValueChanged="volumeSlider_ValueChanged" DragLeave="volumeSlider_DragLeave" DragEnter="volumeSlider_DragEnter" DragStarting="volumeSlider