windows-runtime

问题 I'm trying to show a simple Flyout (with informational content) when a AppBarToggleButton within BottomAppBar is pressed, but my solution doesn't work. :( This is my code: <Page.BottomAppBar> <CommandBar> <AppBarToggleButton x:Uid="MapPageAppBarLegend" Label="" Icon="List"> <FlyoutBase.AttachedFlyout> <Flyout> <TextBlock Text="Informations here..."/> </Flyout> </FlyoutBase.AttachedFlyout> </AppBarToggleButton> </CommandBar> </Page.BottomAppBar> Nothing appears.. Can anyone help me to showing

问题 In several places (e.g. "Creating Windows Runtime Components for JavaScript, in C# and Visual Basic" on MSDN), I've seen it specified that, if you write a class in .NET that you want to use from JavaScript, then you must make it a sealed class. This seems like an arbitrary restriction. Why can JavaScript only work with sealed classes? 回答1: Windows runtime objects exposed to JavaScript applications are sealed from a JavaScript perspective - you can't add expando properties to WinRT objects.

问题 In ReactiveUI, I run this code at a certain point: const string template = "<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' xmlns:routing='using:ReactiveUI.Routing'>" + "<routing:ViewModelViewHost ViewModel=\"{Binding}\" VerticalContentAlignment=\"Stretch\" HorizontalContentAlignment=\"Stretch\" IsTabStop=\"False\" />" + "</DataTemplate>"; var theTemplate = XamlReader.Load(template); On other platforms, this works great (the xmlns declaration is different of

问题 am trying to use sqlite in a windows runtime component. But I get some 219 errors when i add the nuget sqlite-net package. couldnt figure it out anywhere. Any similar issues ? I finally used a store app class library to use sqlite and called those methods in it from my windows runtime component. method in store app public async Task<IEnumerable<TaskGroup> > GetTaskGroup() { return await conn.QueryAsync<TaskGroup>("select * from TaskGroup"); } calling method in win runtime component public

问题 I'm a long time WPF user but new to WinRT. I'm wondering if there's a built in way or easy way to integrate swapping functionality in containers so that a swap exchanges two items in the container. The behavior desired is drag an item and drop it on another item and have both the dragged item and the item it's dragged onto get their positions in the container swapped). Example I have a list with 1 2 3 4 5 6 7 8, if I drag 7 "on" 4 I want the two items swapped so that the resulting list

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I'm trying to learn enough about Windows Runtime to make a recommendation about what it would entail for my employer to port our

问题 I'm in the process of porting my windows 8.1 app to windows 10 UWP, but calling PostAsync now throws an exception. This exact code works perfectly when targeting 8.1, but when I target Windows 10 UWP, it throws the following exception: This IRandomAccessStream does not support the GetInputStreamAt method because it requires cloning and this stream does not support cloning. Code public async void TestPost() { var parameters = GetParameters(); var formattedData = new FormUrlEncodedContent

问题 I have an app that keeps a connection alive to a server, however if the user walks away and the tablet goes to sleep, I would like to handle the disconnect gracefully, and I would also like to log back in when the user wakes the tablet. I've tried in my putting the following code in my connection class, but they never get fired. Application.Current.Suspending += this.OnAppSuspending; Application.Current.Resuming += this.OnAppResuming;; 回答1: For desktop apps, you can use SystemEvents

问题 I have a Windows RT app that I need to launch with a script. I've already installed the app on the device with PowerShell, but I need to launch the app with PowerShell or the command prompt. Is there a way to do this? Thanks. P.S. It looks like there's a way to launch Metro apps on Windows 8 with the Start-MetroApp command, but this doesn't work on Windows RT. Is there some sort of equivalent for Windows RT? 回答1: You can use protocol activation, if you want to make your app such that any one

问题 How is the compiled binding, x:Bind, different from the classical Binding, put as concisely as possible? 回答1: Compared with the classical binding you cannot use the following binding attributes with x:Bind : ElementName , RelativeSource , Source and UpdateSourceTrigger . Well, that almost sums up the limitations of x:Bind but x:Bind is powerful in its own right -- the notable one being compiled binding and hence the performance gain as a result. See last bullet point for another powerful