winrt-xaml

When I resume my app, sometimes it loses its images. I can reproduce this even in trivial apps. This manifests in two different ways, depending on where the image came from: If I did something like <Image Source="/Assets/Logo.png"/> (i.e., loading an image from my app package by URI), the image will disappear briefly, and then reload. This is easier to see when the screen contains many images; they reload in sequence, so I can watch the image loading ripple across the screen. If I created a WriteableBitmap and bound it to Image.Source, then the bitmap disappears entirely, never to return. I

My GridView items having the size of it's first item size . How do i can change this behaviour ? How to display GridView items with variable Width as per the content ? I want to show the first one but i am getting second one. Any suggestion to do that? Check Windows 8 GridView and Variable-Sized Items and Different Sized Tile Items in WinRT GridView and also check Variable Sized Grid Template Hope this help You can create such view of GridView by setting ItemsPanel to WrapPanel , you can get WrapPanel on Jerry Nixon's blog . Here's the code. XAML <GridView x:Name="gv"> <GridView.ItemsPanel>

I have found that in Windows 8 apps, a Page's constructor always gets called again when navigating back to this page, however this is not the case in Windows Phone 7 apps. Because of this behavior all the properties of that page get lost and you need to somehow store them and reassign them after the page is reactivated. At the moment I am using the SaveState method to save the data and reassign the data in LoadState method. Both of the methods are built-in in the sample Grid/Split App. I wonder why it's designed this way and if there's any better way to maintain the instance of the page? You

For WPF there is the ContentRendered event in the Window class which let us know when the visual elements have been rendered. Is there anything that would help me achieve the same result for UWP apps? I'd like know when a FrameworkElement has been completely rendered so I can trigger some actions after that. I don't think the Loaded event helps on that since it's triggered way before there's anything on screen. I would start with Loaded. It might be better than you think. https://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.frameworkelement.loaded The Loaded event can be used

I'm trying to put two Grids in a DataTemplate. I'm getting the following error with my code shown below. Error: "The property 'VisualTree' is set more than once" <DataTemplate x:Key="PareoItemTemplate"> <Grid x:Name="gridColorEjercicio" Height="100" Width="350" Background="#FFF0F0F0" Margin="-11,0,0,0"> <StackPanel Margin="0" Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center"> <StackPanel Margin="0,10,15,0" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center"> <TextBlock HorizontalAlignment="Center" TextWrapping="Wrap" Text="{Binding