winrt-xaml

I'm trying to create a control that exposes a DoLoading event that consumers can subscribe to in order to perform loading operations. For convenience, event handlers should be called from the UI thread allowing consumers to update the UI at will, but they will also be able to use async/await to perform long-running tasks without blocking the UI thread. For this, I have declared the following delegate: public delegate Task AsyncEventHandler<TEventArgs>(object sender, TEventArgs e); That allows consumers to subscribe to the event: public event AsyncEventHandler<bool> DoLoading; The idea is that

So my xaml code looks like this - <Grid x:Name="LayoutRoot"> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="CommonStates"> I can't use the GoToVisualState behavior because I need to do some checks before running this animation. So I guess I will have to call something like GoToState or GoToElementState in code behind. However, ExtendedVisualStateManager doesn't seem to exist in WinRT . I tried using VisualStateManager.GetCustomVisualStateManager(this.LayoutRoot) but it always returns null . Is there any workaround for this? Just figured this out. First create a helper class

I have a GridView with GridView.ItemsSource set to a collection that implements ISupportIncrementalLoading . By implementing this, I am aiming to improve load time and UI responsiveness by only loading items that are needed for display. The framework handles this for me and it works great. <GridView ItemsSource="{Binding Items}"> <GridView.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding Text}"/> </DataTemplate> </GridView.ItemTemplate> </GridView> However , if I wrap the above XAML in a ScrollViewer like the following, the entire collection of Items loads as though the GridView is

In my Metro style app for Windows 8, I'm binding a Listview to an ObservableCollection and I would like the background color of each ListViewItem to alternate (white, gray, white, etc) <ListView x:Name="stopsListView" ItemsSource="{Binding}" > <ListView.ItemTemplate> <DataTemplate> <Grid Height="66" > <TextBlock Text="{Binding Title}" /> </Grid> </DataTemplate> </ListView.ItemTemplate> In WPF, this is done using a Style with Triggers - see this page . How do you accomplish this in a Metro app? Update: After the correct answer was given below, I went away and actually coded it. Here's some code

I have a Metro App with a ListView that contains this definition: <ListView Grid.Row="0" x:Name="lv" CanDragItems="True" CanReorderItems="True" IsTabStop="True" SelectionMode="Extended" VirtualizingStackPanel.VirtualizationMode="Recycling"> <ListView.ItemTemplate> <DataTemplate> <Grid Width="{Binding ElementName=lv, Path=ActualWidth}"> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <Grid Grid.Row="0"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*"/> <ColumnDefinition Width="65"/> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" x:Name="tb1" Foreground=

I am trying to display a dialog that allows the user to type a location, just like in the "add places" function of the Weather App on Windows 8. Windows.UI.Popups namespace does not have an appropriate control. It has the MessageDialog, but I don't think it can be customised to include a textbox in it. Would I need to use Windows.UI.XAML.Controls.Primitives.Popup control by any chance? There is no out of box control beyond Popup to handle this style of UI, the Callisto library uses this control quite a bit so it has a lot of good examples of it's usage. Edit: In fact now the Callisto library