itemscontrol | 易学教程

WPF: Scroll Itemcontrol Content Fixed Header

阅读更多关于 WPF: Scroll Itemcontrol Content Fixed Header

问题 Is it possible to do something like this with WPF's ItemsControl: Demo I am trying to freeze the GroupedItems rather than the GridView Columns. Resources: <Window.Resources> <CollectionViewSource x:Key="data" Source="{Binding}"> <CollectionViewSource.GroupDescriptions> <PropertyGroupDescription PropertyName="Date"/> </CollectionViewSource.GroupDescriptions> </CollectionViewSource> </Window.Resources> ListView: <ListView Grid.Column="0" ItemsSource="{Binding Source={StaticResource data}}">

How to draw line of ten thousands of points with WPF within 0.5 second?

阅读更多关于 How to draw line of ten thousands of points with WPF within 0.5 second?

问题 I am writing WPF code to show a real-time plot which is a connected line containing about 10,000 points. It takes about 5 seconds to show a picture in my computer. Does anyone have an idea to make it quicker and within 0.5 second? class eee : FrameworkElement { public eee() { _children = new VisualCollection(this); Random rand = new Random(); DrawingVisual dv = new DrawingVisual(); using (DrawingContext dx = dv.RenderOpen()) { Pen drawingPen = new Pen(Brushes.Black, 1); double x=rand.Next(300

WPF TabStop / TabIndex in ItemsControl

阅读更多关于 WPF TabStop / TabIndex in ItemsControl

I'm dynamically adding WPF ComboBox-es and I want to be able to select the added ComboBoxes with the 'TAB' key . (Dynamically generate TabIndex or something) As it actually is: What I want: How would you do that? This is the code: <ItemsControl ItemsSource="{Binding}" Name="myItemsControl"> <ItemsControl.ItemTemplate> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="3*"/> <ColumnDefinition Width="*"/> <ColumnDefinition Width="Auto"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <ComboBox Grid.Column="0" ItemsSource

How to highlight selected item in ItemsControl?

阅读更多关于 How to highlight selected item in ItemsControl?

I have the following XAML. How can i highlight the selected item in the ItemsControl ? I can override the selected item template for ListView but how to achieve the same for ItemsControl? Is there any alternative control that can display a collection of images ? <Window x:Class="ImageScrollDemo.View.MoviePosterView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:ImageScrollDemo" xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" Title="MoviePosterView"

How to convert X/Y position to Canvas Left/Top properties when using ItemsControl

阅读更多关于 How to convert X/Y position to Canvas Left/Top properties when using ItemsControl

I am trying to use a Canvas to display objects that have "world" location (rather than "screen" location). The canvas is defined like this: <Canvas Background="AliceBlue"> <ItemsControl Name="myItemsControl" ItemsSource="{Binding MyItems}"> <Image x:Name="myMapImage" Panel.ZIndex="-1" /> <ItemsControl.ItemTemplate> <DataTemplate> <Canvas> <TextBlock Canvas.Left="{Binding WorldX}" Canvas.Top="{Binding WorldY}" Text="{Binding Text}" Width="Auto" Height="Auto" Foreground="Red" /> </Canvas> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> </Canvas> MyItem is defined like this: public

Bind to DataContext Property inside inline Array Declaration

阅读更多关于 Bind to DataContext Property inside inline Array Declaration

问题 We have some XAML which may seem odd but apparently is needed for defining a couple of buttons inside a third party's ribbon gallery control. The gallery has a ItemsControl.ItemsSource which the XAML is populating with two Array items, these array items are a custom type which has a bitmap property and a ICommand property. Everything looks fine but I cannot get the array item property to bind to anything to do with the window's data context. I have tried every trick i know, RelativeSource,

How to use AlternationIndex in ItemsControls?

阅读更多关于 How to use AlternationIndex in ItemsControls?

I have seen some articles that show how to use AlternationIndex with ListBox es or ListView s, but I had spent a few hours trying to get alternating background colors on the base ItemsControl class and nothing seems to work. All ListBox samples I saw use ListBoxItem as the target type for the style that sets the background based on AlternationIndex - like this one from MSDN : <Grid> <Grid.Resources> <Style x:Key="alternatingWithTriggers" TargetType="{x:Type ListBoxItem}"> <Setter Property="Background" Value="Blue"/> <Setter Property="Foreground" Value="White"/> <Style.Triggers> <Trigger

Modify ZIndex of an Items in an ItemsControl

阅读更多关于 Modify ZIndex of an Items in an ItemsControl

问题 Here is the code of my ItemsControl that zooms on items when the mouse goes over. I don't manage to increase the ZIndex of the current zoomed item to put it over the others. <ItemsControl ItemsSource="{Binding Path=Value}"> <ItemsControl.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding Path=Name}" RenderTransformOrigin="0.5 0.5"> <TextBlock.Style> <Style TargetType="{x:Type TextBlock}"> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="RenderTransform">

WPF: Alternating colors on a ItemsControl?

阅读更多关于 WPF: Alternating colors on a ItemsControl?

How do I get alternating colors on a ItemsControl? I have AlternationCount set to 2, but the ItemsControl.AlternationIndex property always returns 0. <ItemsControl ItemsSource="{Binding}" AlternationCount="2"> <ItemsControl.Resources> <Style x:Key="FooBar" TargetType="Grid"> <Style.Triggers> <Trigger Property="ItemsControl.AlternationIndex" Value="0"> <Setter Property="Background" Value="Blue"/> </Trigger> <Trigger Property="ItemsControl.AlternationIndex" Value="1"> <Setter Property="Background" Value="Red"/> </Trigger> </Style.Triggers> </Style> </ItemsControl.Resources> <ItemsControl

WPF - Best way to remove an item from the ItemsSource

阅读更多关于 WPF - Best way to remove an item from the ItemsSource

问题 I'm writing a custom ItemsControl (a tabbed document container), where each item (tab) can remove itself from the UI when the user closes it. However, I can't remove it directly from the ItemsControl.Items collection, because the items can be databound. So I have to remove it from the ItemsSource , which can be anything ( ICollection , DataTable , DataSourceProvider ...). In the context of my application, I know what the actual type of the ItemsSource will be, but I want that control to be