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  • WPF DataGrid multiselect binding

    - by JZ
    I have a datagrid that is multi-select enabled. I need to change the selection in the viewmodel. However, the SelectedItems property is read only and can't be directly bound to a property in the viewmodel. So how do I signal to the view that the selection has changed?

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  • WPF Binding Syntax Question

    - by Gurdas Nijor
    I've seen this syntax show up, and have tried to google for it's definition to no avail; what does it mean when a dp is bound this way? <Grid> <ContentControl Content="{Binding}"/> </Grid> I was under the assumption that you have to bind to some property on the DataContext, or another element, but this appears to bind to nothing.

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  • Resize Clipping Path on window resize in WPF

    - by blobkat
    Hello, I was wondering how to resize a Clipping path dynamically when resizing the window. Right now I'm taking a rectangle in Expression Blend that resizes with the window. Applying this rectangle to a circle as a clipping path makes the rectangle fixed, and it won't resize anymore. I've seen different ways of making clipping paths in XAML, in the Clip="" property as well as style markup. But I haven't succeeded yet in finding a proper XAML solution. Can anyone point me in the right direction? Thanks!

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  • Wpf binding to a function

    - by carlopenid
    I've a created a simple scrollviewer (pnlDayScroller) and want to have a separate horizontal scrollbar (associated scroller) to do the horizontal scrolling. All works with the below code accept I need to bind the visibility of the associated scroller. I can't simply bind this to the visibility property of the horizontal template part of the scroll viewer as I've set this to be always hidden. The only way I can think to do this is to bind the visibility of the associated scroller to a function such that If associatedScroller.scrollableWidth > 0 then associatedScroller.visibility = visibility.visible else associatedScroller.visibility = visibility.collapsed end if Is this possible to do and if so how do I do it? Private Sub pnlDayScroller_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles pnlDayScroller.Loaded Dim binViewport, binMax, binMin, binSChange, binLChange As Binding Dim horizontalScrollBar As Primitives.ScrollBar = CType(pnlDayScroller.Template.FindName("PART_HorizontalScrollBar", pnlDayScroller), Primitives.ScrollBar) binViewport = New Binding("ViewportSize") binViewport.Mode = BindingMode.OneWay binViewport.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.ViewportSizeProperty, binViewport) binMax = New Binding("Maximum") binMax.Mode = BindingMode.OneWay binMax.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.MaximumProperty, binMax) binMin = New Binding("Minimum") binMin.Mode = BindingMode.OneWay binMin.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.MinimumProperty, binMin) binSChange = New Binding("SmallChange") binSChange.Mode = BindingMode.OneWay binSChange.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.SmallChangeProperty, binSChange) binLChange = New Binding("LargeChange") binLChange.Mode = BindingMode.OneWay binLChange.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.LargeChangeProperty, binLChange) End Sub Private Sub associatedScroller_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.RoutedPropertyChangedEventArgs(Of Double)) Handles associatedScroller.ValueChanged pnlDayScroller.ScrollToHorizontalOffset(e.NewValue) end sub FOLLOW UP (thanks to JustABill) : I've add this code into the pnlDayScroller sub above (I've discovered scrollableWidth is a property of scrollviewer not scrollbar, but the maximum property gives a result I can use instead) binVisibility = New Binding("Maximum") binVisibility.Mode = BindingMode.OneWay binVisibility.Source = horizontalScrollBar binVisibility.Converter = New ScrollableConverter associatedScroller.SetBinding(Primitives.ScrollBar.VisibilityProperty, binVisibility) and I've created this class Public Class ScrollableConverter Implements IValueConverter Public Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.Convert Dim dblMaximum As Double If targetType IsNot GetType(Visibility) Then Throw New InvalidOperationException("The target must be a visibility") Else dblMaximum = CType(value, Double) Debug.WriteLine("Value of double is " & dblMaximum) If dblMaximum > 0 Then Return Visibility.Visible Else Return Visibility.Collapsed End If End If End Function Public Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack Throw New NotSupportedException() End Function End Class And the problem is resolved.

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  • WPF Binding with a Border

    - by Nathan
    I have a group of borders that make up a small map. Ideally I'd like to be able to bind the border's background property to a property in a custom list and when that property changes it changes the background. The tricky thing is, I have to do this in code behind. Could someone point me in the right direction? Thanks.

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  • Add animation when user control get visible and collapsed In Wpf

    - by sanjeev40084
    I have two xaml files MainWindow.xaml and other user control WorkDetail.xaml file. MainWindow.xaml file has a textbox, button, listbox and reference to WorkDetail.xaml(user control which is collapsed). Whenever user enter any text, it gets added in listbox when the add button is clicked. When any items from the listbox is double clicked, the visibility of WorkDetail.xaml is set to Visible and it gets displayed. In WorkDetail.xaml (user control) it has textblock and button. The Textblock displays the text of selected item and close button sets the visibility of WorkDetail window to collapsed. Now i am trying to animate WorkDetail.xaml when it gets visible and collapse. When any items from listbox is double clicked and WorkDetail.xaml visibility is set to visible, i want to create an animation of moving WorkDetail.xaml window from right to left on MainWindow. When Close button from WorkDetail.xaml file is clicked and WorkDetail.xaml file is collapsed, i want to slide the WorkDetail.xaml file from left to right from MainWindow. Here is the screenshot: MainWindow.xaml code: <Window...> <Grid Background="Black" > <TextBox x:Name="enteredWork" Height="39" Margin="44,48,49,0" TextWrapping="Wrap" VerticalAlignment="Top"/> <ListBox x:Name="workListBox" Margin="26,155,38,45" FontSize="29.333" MouseDoubleClick="workListBox_MouseDoubleClick"/> <Button x:Name="addWork" Content="Add" Height="34" Margin="71,103,120,0" VerticalAlignment="Top" Click="Button_Click"/> <TestWpf:WorkDetail x:Name="WorkDetail" Visibility="Collapsed"/> </Grid> </Window> MainWindow.xaml.cs class code: namespace TestWpf { public partial class MainWindow : Window { public MainWindow() { this.InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { workListBox.Items.Add(enteredWork.Text); } private void workListBox_MouseDoubleClick(object sender, MouseButtonEventArgs e) { WorkDetail.workTextBlk.Text = (string)workListBox.SelectedItem; WorkDetail.Visibility = Visibility.Visible; } } } WorkDetail.xaml code: <UserControl ..> <Grid Background="#FFD2CFCF"> <TextBlock x:Name="workTextBlk" Height="154" Margin="33,50,49,0" TextWrapping="Wrap" VerticalAlignment="Top" FontSize="29.333" Background="#FFF13939"/> <Button x:Name="btnClose" Content="Close" Height="62" Margin="70,0,94,87" VerticalAlignment="Bottom" Click="btnClose_Click"/> </Grid> </UserControl> WorkDetail.xaml.cs class code: namespace TestWpf { public partial class WorkDetail : UserControl { public WorkDetail() { this.InitializeComponent(); } private void btnClose_Click(object sender, System.Windows.RoutedEventArgs e) { Visibility = Visibility.Collapsed; } } } Can anyone tell how can i do this?

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  • WPF FrameworkElement Parent and Moving a UIElement

    - by Adam Driscoll
    I'm trying to move a control from one parent to another (if this will work I'm not quite sure). I can get a hold of the control that I want to move. Here is my code: public void MoveElement(UIElement uiElement) { var element = ((FrameworkElement)uiElement).Parent; //TODO:Remove from parent myControl.Children.Add(uiElement); } When I hit the last statment an ArgumentException is thrown stating "Specified Visual is already a child of another Visual or the root of a CompositionTarget." The strange thing is that Parent is returning null. How do locate the parent? Will this even work?

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  • Setting a Visual State from a data bound enum in WPF

    - by firoso
    Hey all, I've got a scenario where I want to switch the visiblity of 4 different content controls. The visual states I have set opacity, and collapsed based on each given state (See code.) What I'd like to do is have the visual state bound to a property of my View Model of type Enum. I tried using DataStateBehavior, but it requires true/false, which doesn't work for me. So I tried DataStateSwitchBehavior, which seems to be totally broken for WPF4 from what I could tell. Is there a better way to be doing this? I'm really open to different approaches if need be, but I'd really like to keep this enum in the equation. Edit: The code shouldn't be too important, I just need to know if there's a well known solution to this problem. <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:Custom="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions" xmlns:ee="http://schemas.microsoft.com/expression/2010/effects" xmlns:customBehaviors="clr-namespace:SEL.MfgTestDev.ESS.Behaviors" x:Class="SEL.MfgTestDev.ESS.View.PresenterControl" mc:Ignorable="d" d:DesignHeight="624" d:DesignWidth="1104" d:DataContext="{Binding ApplicationViewModel, Mode=OneWay, Source={StaticResource Locator}}"> <Grid> <Grid.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="Layout/TerminalViewTemplate.xaml"/> <ResourceDictionary Source="Layout/DebugViewTemplate.xaml"/> <ResourceDictionary Source="Layout/ProgressViewTemplate.xaml"/> <ResourceDictionary Source="Layout/LoadoutViewTemplate.xaml"/> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Grid.Resources> <Custom:Interaction.Behaviors> <customBehaviors:DataStateSwitchBehavior Binding="{Binding ApplicationViewState}"> <customBehaviors:DataStateSwitchCase State="LoadoutState" Value="Loadout"/> </customBehaviors:DataStateSwitchBehavior> </Custom:Interaction.Behaviors> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="ApplicationStates" ei:ExtendedVisualStateManager.UseFluidLayout="True"> <VisualStateGroup.Transitions> <VisualTransition GeneratedDuration="0:0:1"> <VisualTransition.GeneratedEasingFunction> <SineEase EasingMode="EaseInOut"/> </VisualTransition.GeneratedEasingFunction> <ei:ExtendedVisualStateManager.TransitionEffect> <ee:SmoothSwirlGridTransitionEffect/> </ei:ExtendedVisualStateManager.TransitionEffect> </VisualTransition> </VisualStateGroup.Transitions> <VisualState x:Name="LoadoutState"> <Storyboard> <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="LoadoutPage"> <EasingDoubleKeyFrame KeyTime="0" Value="1"/> </DoubleAnimationUsingKeyFrames> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="LoadoutPage"> <DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> <VisualState x:Name="ProgressState"> <Storyboard> <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ProgressPage"> <EasingDoubleKeyFrame KeyTime="0" Value="1"/> </DoubleAnimationUsingKeyFrames> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="ProgressPage"> <DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> <VisualState x:Name="DebugState"> <Storyboard> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="DebugPage"> <DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/> </ObjectAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="DebugPage"> <EasingDoubleKeyFrame KeyTime="0" Value="1"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </VisualState> <VisualState x:Name="TerminalState"> <Storyboard> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="TerminalPage"> <DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/> </ObjectAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="TerminalPage"> <EasingDoubleKeyFrame KeyTime="0" Value="1"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </VisualState> </VisualStateGroup> </VisualStateManager.VisualStateGroups> <ContentControl x:Name="LoadoutPage" ContentTemplate="{StaticResource LoadoutViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/> <ContentControl x:Name="ProgressPage" ContentTemplate="{StaticResource ProgressViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/> <ContentControl x:Name="DebugPage" ContentTemplate="{StaticResource DebugViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/> <ContentControl x:Name="TerminalPage" ContentTemplate="{StaticResource TerminalViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/> <TextBlock HorizontalAlignment="Left" TextWrapping="Wrap" VerticalAlignment="Top" Text="{Binding ApplicationViewState}"> <TextBlock.Background> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="Black" Offset="0"/> <GradientStop Color="White" Offset="1"/> </LinearGradientBrush> </TextBlock.Background> </TextBlock> </Grid>

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  • Wrap or adorn wpf listview datatemplate

    - by Chris Cap
    I'm attempting to essentially wrap the contents of a DateTemplate in a listview gridview column with a border. What I want to know is if it's possible to supply an adorner that will surround that template so that I don't have to specify the border in every single datatemplate on every column (which is what I'm doing now). I've got something like this, but I know it's not right <Style TargetType="{x:Type ListBoxItem}"> <Setter Property="TemplateContent"> <Setter.Value> <ControlTemplate> <StackPanel> <Border BorderBrush="Green" BorderThickness="1"> <AdornedElementPlaceholder /> </Border> </StackPanel> </ControlTemplate> </Setter.Value> </Setter> </Style> This complains that Templatecontent is not a valid type. I've also tried with DataTemplate and that doesn't work either (understandably so). I know I could just create a DataTemplate, however the content for each column is different. At the very least, it binds to different fields. I'm wondering if there's a solution using a dynamic resource, but I don't know much about it. Thanks for your help EDIT: here's a sample of my listview <ListView ItemsSource="{Binding Path=OrderLines}" ItemContainerStyle="{StaticResource ResourceKey=ListViewItemContainerStyle}"> <ListView.View> <GridView> <GridViewColumn> <GridViewColumn.CellTemplate> <DataTemplate> <TextBox MaxWidth="30" Width="30" MaxLength="2" Text="{Binding Path=Quantity,ValidatesOnDataErrors=True}" /> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridView> <ListView.View> </ListView> Essentially I want to wrap that text box in the data template and any other items in additional columns.

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  • C# WPF XAML DataTable binding to relation

    - by LnDCobra
    I have 2 tables: COmpany {CompanyID, CompanyName} Deal {CompanyID, Value} And I have a listbox: <ListBox Name="Deals" Height="100" Width="420" Margin="0,20,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Visibility="Visible" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding}" SelectionChanged="Deals_SelectionChanged"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding companyRowByBuyFromCompanyFK.CompanyName}" FontWeight="Bold" /> <TextBlock Text=" -> TGS -> " /> <TextBlock Text="{Binding BuyFrom}" FontWeight="Bold" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> As you can see, I want to display the CompanyName rather then the ID which is a foreign Key. The relation "companyRowByBuyFromCompanyFK" exists, as in Deals_SelectionChanged I can access companyRowByBuyFromCompanyFK property of the Deals row, and I also can access the CompanyName propert of that row. Is the reason why this is not working because XAML binding uses the [] indexer? Rather than properties on the CompanyRows in my DataTable? At the moment im getting values such as - TGS - 3 - TGS - 4 Any ideas? Edit: I still can't get this to work, What would be the best way to accomplish this? Make a converter to convert foreign keys using Table being referenced as custom parameter. Create Table View for each table? This would be long winded as I have quite a large number of tables that have foreign keys.

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  • WPF - DataGrid Column's ToolTip visibility based on the column's data length

    - by S.C.Vidhya
    In my application, i have tried to implement the visibility of tooltip based on the dataGrid Column's text length by using a converter. I am facing some problems in displaying the toolTip text. In the ToolTip, TextBlock's text binding is not working. If its binded with some hard coded strings, it works fine. Here below is the code that i have added for the grid column... <Custom:DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding Text}"> <TextBlock.ToolTip> <ToolTip DataContext="{Binding Path=PlacementTarget, RelativeSource={x:Static RelativeSource.Self}}" Visibility="{Binding Converter={StaticResource ToolTipVis}}"> <TextBlock Text="{Binding Text}"> </ToolTip> </TextBlock.ToolTip> </TextBlock> </DataTemplate> </Custom:DataGridTemplateColumn.CellTemplate>

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  • WPF: Binding Combobox in Code Behind to Property

    - by Richard
    Hi All, This might be something very straight forward and I really think it should work as is, but it doesn't... I have the following scenario: var itemSource = new Binding { Path = new PropertyPath("ItemList"), Mode = BindingMode.OneTime }; comboBox.SetBinding(ItemsControl.ItemsSourceProperty, itemSource); ItemList is simply: public IList<string> ItemList { get { return Enum.GetNames(typeof(OptionsEnum)).ToList(); } } I would have expected this to bind the list of items to the Combobox, and when I do it in XAML it works fine, but I have to do it in code behind... Any ideas?

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  • [WPF] ComboBox.Text not taking the ItemStringFormat property into account

    - by Thomas Levesque
    I just noticed a strange behavior which looks like a bug. Consider the following XAML : <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:sys="clr-namespace:System;assembly=mscorlib"> <Page.Resources> <x:Array x:Key="data" Type="{x:Type sys:String}"> <sys:String>Foo</sys:String> <sys:String>Bar</sys:String> <sys:String>Baz</sys:String> </x:Array> </Page.Resources> <StackPanel Orientation="Vertical"> <Button>Boo</Button> <ComboBox Name="combo" ItemsSource="{Binding Source={StaticResource data}}" ItemStringFormat="##{0}##" /> <TextBlock Text="{Binding Text, ElementName=combo}"/> </StackPanel> </Page> The ComboBox displays the values as "##Foo##", "##Bar##" and "##Baz##". But the TextBlock displays the selected values as "Foo", "Bar" and "Baz". So the ItemStringFormat is apparently ignored for the Text property... Is that a bug ? If it is, is there a workaround ? Or am I just doing something wrong ?

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  • WPF Zoom with ScaleTransform overlap all Window

    - by Andrew
    Hi, i want to create Pan & Zoom control Similar thread, so i transform control with ScaleTransform and it overlaps all window, i have ot do it with RenderTransform, becouse with LayoutTransform Pan implemented in example doesn't work. Are there any properties or templates with which i can implement behavior like this: if content of container undergo transformation (or just move), if content doesn't fit, container shows only fitted part, something like this: <Container Height="100" Width="100" DisplayOption="CutAllThatNotFit"> <Content/> </Container>

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  • MS Chart control with WPF C#

    - by Birgir Hrafn Sigurðsson
    Hello, Ive got a MS Chart control and it works just fine except that I can't figure out how to "format" the Y-Axis. I am adding a lot of double numbers into a Serie but when the double numb are actually whole numbers (20.000000.....) the Y-Axis on my chart shows 20. example: this serie : 12.32 11.00 10.13 would actually show up like this: 12.32 11 10.13 I have tried formatting the data as I insert it into the serie like this: serie.Points.AddXY(date.ToString(),double[i].ToString("##.##")); but that doesn't seem to work. I've tried to search for a place to format it in Chart.Series[0].* and Chart.ChartAreas[0].* but I didn't find it there. Thanks in advance, Regards, Birgir Hrafn

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  • WPF TreeView - How to scroll so expanded branch is visible

    - by Jared
    When I expand items in my treeview so that scrolling is necessary, a scrollbar appears. However, it doesn't scroll down for the newly expanded branch of items - they get cropped by the bottom of the control. So as I continue expanding items at the bottom of the tree, I have to keep manually scrolling down to see the new children. Anyone have a suggestion for how make it automatically scroll to show the newly expanded items?

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  • WPF Binding to local variable

    - by PrimeTSS
    Can you bind to a local variable like this? SystemDataBase.cs namespace WebWalker { public partial class SystemDataBase : Window { private string text = "testing"; ... SystemDataBase.xaml ... <TextBox Name="stbSQLConnectionString" Text="{SystemDataBase.text}"> </TextBox> ?? Text is set to the local variable "text"

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  • wpf treeview collapse/expand option disappeared

    - by Muhammad Adnan
    I used following code <!-- TreeView --> <Style x:Key="{x:Type TreeView}" TargetType="TreeView"> <Setter Property="OverridesDefaultStyle" Value="True" /> <Setter Property="SnapsToDevicePixels" Value="True" /> <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/> <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="TreeView"> <Border Name="Border" CornerRadius="1" Background="{StaticResource WindowBackgroundBrush}" BorderBrush="{StaticResource SolidBorderBrush}" BorderThickness="1"> <ScrollViewer Focusable="False" CanContentScroll="False" Padding="4"> <ItemsPresenter/> </ScrollViewer> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> <!-- TreeViewItem --> <Style x:Key="TreeViewItemFocusVisual"> <Setter Property="Control.Template"> <Setter.Value> <ControlTemplate> <Border> <Rectangle Margin="0,0,0,0" StrokeThickness="5" Stroke="Black" StrokeDashArray="1 2" Opacity="0"/> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> <Style x:Key="{x:Type TreeViewItem}" TargetType="{x:Type TreeViewItem}"> <Setter Property="Background" Value="Transparent"/> <Setter Property="HorizontalContentAlignment" Value="{Binding Path=HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/> <Setter Property="VerticalContentAlignment" Value="{Binding Path=VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/> <Setter Property="Padding" Value="1,0,0,0"/> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/> <Setter Property="FocusVisualStyle" Value="{StaticResource TreeViewItemFocusVisual}"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type TreeViewItem}"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition/> </Grid.RowDefinitions> <Border Name="Bd" Grid.Column="0" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}"> <ContentPresenter x:Name="PART_Header" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/> </Border> <ItemsPresenter x:Name="ItemsHost" Visibility="Visible" Grid.Row="1" Grid.Column="0"/> </Grid> <ControlTemplate.Triggers> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="HasHeader" Value="false"/> <Condition Property="Width" Value="Auto"/> </MultiTrigger.Conditions> <Setter TargetName="PART_Header" Property="MinWidth" Value="75"/> </MultiTrigger> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="HasHeader" Value="false"/> <Condition Property="Height" Value="Auto"/> </MultiTrigger.Conditions> <Setter TargetName="PART_Header" Property="MinHeight" Value="19"/> </MultiTrigger> <Trigger Property="IsSelected" Value="true"> <Setter TargetName="Bd" Property="Background" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/> </Trigger> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="IsSelected" Value="true"/> <Condition Property="IsSelectionActive" Value="false"/> </MultiTrigger.Conditions> <Setter TargetName="Bd" Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/> </MultiTrigger> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> </Window.Resources> <Grid> <TreeView> <TreeViewItem Header="Node 1"> <TreeViewItem Header="Node 1.1"> <TreeViewItem Header="Node 1.1.1" /> </TreeViewItem> </TreeViewItem> <TreeViewItem Header="Node 2"> <TreeViewItem Header="Node 2.1"> <TreeViewItem Header="Node 2.1.1" /> </TreeViewItem> <TreeViewItem Header="Node 2.2"> <TreeViewItem Header="Node 2.2.1" /> </TreeViewItem> </TreeViewItem> </TreeView> </Grid> taken from this url... http://stackoverflow.com/questions/1526925/can-i-have-a-treeview-without-the-tree-structure NOW I AM HAVING PROBLEM. I LOST COLLAPSE/EXPAND OPTIONS... HOW CAN I HAVE WITH THIS CODE...

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  • WPF ListView get GridViewColumn from control inside DataTemplate

    - by ragi
    Example: <ListView Name="lvAnyList" ItemsSource="{Binding}"> <ListView.View> <GridView> <GridViewColumn Header="xx" DisplayMemberBinding="{Binding XX}" CellTemplate="{DynamicResource MyDataTemplate}"/> <GridViewColumn Header="yy"> <GridViewColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding YY}" /> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> </GridView> </ListView.View> </ListView> If I access the TextBlock inside DataTemplate I will have access to information about the bound path. But I don't know how to find (starting from the TextBlock) its containing GridViewColumn (which is in the GridViewRowPresenter columns list) and compare it to the grid's GridViewColumn (from GridViewHeaderRowPresenter column list) to get the header's name. At the end I should have the pairs: xx-XX, yy-YY I can find a list of all TextBlocks inside ListView by using this: GridViewRowPresenter gvrp = ControlAux.GetVisualDescendants<GridViewRowPresenter>(element).FirstOrDefault(); IEnumerable<TextBlock> entb = GetVisualDescendants<TextBlock>(gvrp); I can find a list of all GridViewColumnHeaders: GridViewHeaderRowPresenter gvhrp = ControlAux.GetVisualDescendants<GridViewHeaderRowPresenter>(element).FirstOrDefault(); And I cannot find the connection between the TextBlocks and the GridViewColumns... I hope this is understandable.

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  • Wpf combobox selection change breaks Datatrigger

    - by biju
    Hi, I am trying to set the selected value of a combobox from a style trigger.It works as long as we dont manually change any value in the combobox.But it stops working altogether after manually changing the selection.How can i solve this.A sample code is attached.Please do help <Window x:Class="InputGesture.Window2" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:InputGesture" Title="Window2" Height="300" Width="300" Name="Sample"> <Window.Resources> <Style TargetType="{x:Type ComboBox}"> <Setter Property="ComboBox.SelectedValue" Value="1"/> <Style.Triggers> <DataTrigger Binding="{Binding ElementName=chk,Path=IsChecked}" Value="True"> <Setter Property="ComboBox.IsEnabled" Value="False"/> <Setter Property="ComboBox.SelectedValue" Value="2"/> </DataTrigger> </Style.Triggers> </Style> </Window.Resources> <StackPanel> <CheckBox Name="chk" Height="23"/> <ComboBox Name="cmb" Height="23" DisplayMemberPath="Name" SelectedValuePath="Id" ItemsSource="{Binding ElementName=Sample,Path=DT}"> </ComboBox> <Button Height="23" Click="Button_Click"/> </StackPanel> </Window>

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  • WPF change ItemsPanel and ItemTemplate in code behind

    - by Tijs Hendriks
    Hi, I have the following list in XAML: <ListView Name="ListViewBack" Margin="3" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ItemsPanel="{StaticResource IconListPanelTemplate}" ItemTemplate="{StaticResource IconListDataTemplate}"> </ListView> Now I would like to be able to change the ItemsPanel and ItemTemplate from the List to the Grid version. I've tried this using the following code: ListViewBack.ItemsPanel = Resources["IconGridPanelTemplate"] as ItemsPanelTemplate; ListViewBack.ItemTemplate = Resources["IconGridDataTemplate"] as DataTemplate; But nothing happens when excecuted. Any idea's? Thanks!

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  • WPF Custom TextBox ContextMenuOpening Problem

    - by Tom Allen
    I've got an issue with a custom control that I've written not firing it's ContextMenuOpening event when I hook it up programatically. The control is basically a wrapper for the standard TextBox: public class MyTextBox : TextBox { public MyTextBox() { this.ContextMenuOpening += new ContextMenuEventHandler(MyTextBox_ContextMenuOpening); } void MyTextBox_ContextMenuOpening(object sender, ContextMenuEventArgs e) { MessageBox.Show("ContextMenuOpening event fired"); } } There's nothing suspect either about the XAML: <local:MyTextBox Height="25" Width="300"/> For some reason though, I can never get the event to fire. I'm trying to intercept the context menu so I can alter it (it's context sensitive) and really am trying to avoid having to hook up the event everywhere the control is used - surely this is possible?

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