xaml

问题 How can I bind the ItemsSource of a Combobox column to a collection that is a sub-property of a property on the same row? In other words, the DataGrid is bound to a collection of items of a class the contains Property1 and Property2. So the DataGrid has two columns, Property1 and Property2. Property1 has a sub-property that is an Observable Collection. The column for Property2 is a Combobox column that should use Property1's Observable Collection as its ItemsSource. I'm loading the grid's

问题 I have created the custom usercontrol for datagrid as CustomDatagrid. And i am using that custom datagrid in another usercontrol as DatagridUserControl. I added Textblock inside the CustomDatagrid in DatagridUserControl. I gave x:Name for Textblock in DatagridUserControl. <GridControl:CustomDatagrid Grid.Row="2" Height="260" Width="640" x:Name="GridTask" BorderThickness="0" FontSize="24" Foreground="White" SelectionChanged="slmGridTask_SelectionChanged" ColumnWidth="*" CanUserResizeColumns=

问题 I want a structure like this : Click this to see the desired output But with my code i'm getting this : Click this to see the output Here is my xaml code : <ScrollView Orientation="Horizontal"> <StackLayout Orientation="Horizontal" VerticalOptions="Start"> <Grid x:Name="ImagesListViews" > <Grid.RowDefinitions> <RowDefinition Height="*"/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> </Grid> <local:BindableStackLayout x:Name=

问题 i have a TreeView with same in xaml createt TreeViewItems. And one note has a ObservableCollection as ItemSource. This works like a Charm. But now i want same Notes to every item of the list (for better organization). So i do this: This is my HierarchicalDataTemplate for the liste <HierarchicalDataTemplate DataType="{x:Type classes:Connection}" ItemsSource="{Binding Source={StaticResource ConnectionChilds}}" > <TextBlock Text="{Binding DisplayName}" /> </HierarchicalDataTemplate> And the

问题 I am trying to use the GetPositionFromPoint, and in the documentation it talks about the snapToText bool which, if false, "returns null if point is not inside a character's bounding box" . Anyway, I am receiving always a null TextPointer, even when my Point is on a character. I leave my code here, I am using a checkbox (called "check") to see if the TextPointer is null or not, and it is always unchecked: Point posicion = Mouse.GetPosition(Application.Current.MainWindow); TextPointer posAhora

问题 Im trying to update some UWP UI from a background thread via the Dispatcher. However, the handler passwed to the RunAsync method is still getting executed on a backlground thread. I have no idea how to fix this - have I missed something? --EDIT-- I only have one window, which is Window.Current I have tried the Community Toolkit DispatcherHelper class, but I'm still getting the exact same exception private static async void OnSelectedItemChanged(DependencyObject d,

问题 I am trying to make a basic window that uses a WPF TabControl to allow users to add new tabs. I want the end product to look somewhat like the way tabs work in a web browser where the last tab is just a "+" that when clicked it will add a new tab. I am trying to write the XAML code to set this up and I found that I can specify multiple DataTemplates within "TabControl.Resources" and based on the "DataType" the correct DataTemplate will be used to display the correct view for each tab... but

问题 I've got a ListBox as such: <ListBox Margin="5" ItemsSource="{Binding NetworkAdapters, Mode=OneWay}" SelectedItem="{Binding SelectedNetworkAdapter}" SelectionChanged="{s:Action SelectedNetworkAdapterChanged}"> <ListBox.ItemsPanel> <ItemsPanelTemplate> <UniformGrid Columns="2" VerticalAlignment="Top"/> </ItemsPanelTemplate> </ListBox.ItemsPanel> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <Ellipse Width="15" Height="15" Margin="5"> <Ellipse.Style> <Style

问题 I am working from the solution presented here, which has worked well for me until this point. I'm now trying to perform datatrigger binding to an interface property via the following XAML: <DataGrid.RowStyle> <Style TargetType="{x:Type DataGridRow}"> <Style.Triggers> <DataTrigger Binding="{Binding Path=(selection:IChartDefinitionViewModel.SelectedItem).HasErrors}" Value="False"> <Setter Property="Background" Value="Transparent"/> </DataTrigger> <DataTrigger Binding="{Binding Path=(selection

问题 I am working from the solution presented here, which has worked well for me until this point. I'm now trying to perform datatrigger binding to an interface property via the following XAML: <DataGrid.RowStyle> <Style TargetType="{x:Type DataGridRow}"> <Style.Triggers> <DataTrigger Binding="{Binding Path=(selection:IChartDefinitionViewModel.SelectedItem).HasErrors}" Value="False"> <Setter Property="Background" Value="Transparent"/> </DataTrigger> <DataTrigger Binding="{Binding Path=(selection