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• WPF TreeViewItem + Change the Highlight Color

  - by flurreh

  Hello, I have got a TreeView with a HierarchicalDataTemplate. <HierarchicalDataTemplate x:Key="treeViewItemTemplate" ItemsSource="{Binding GetChildren}"> <DockPanel Margin="0,8,8,0"> <Image Source="{Binding GetImage}" Width="16" Height="16" /> <local:MonitorTriStateCheckBox…

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• WPF Styles Button MouseOver Question.

  - by SO give me back my rep

  Hi, I am trying to make a simple mouseover effect on a button, It does change the color when mouse is over but the color is immediately changed to the default button background... how can I override this behavior? this is my code: Style myBtnStyle = new Style(); Trigger bla = new Trigger() { Property = IsMouseOverProperty, Value = true…

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• How to set a binding in WPF Toolkit Datagrid's ContextMenu CommandParameter

  - by Boris Lipschitz

  I need to create a ContextMenu where I want to pass a currently selected index of the datagrid to a ViewModel using CommandParameter. The following Xaml code doesn't work. What might be the problem? <dg:DataGrid ItemsSource="{Binding MarketsRows}" <dg:DataGrid.ContextMenu > <ContextMenu > …

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• WPF ICommand over a button

  - by toni

  Hi, I have implemented a custom IComand class for one of my buttons. The button is placed in a page 'MyPage.xaml' but its custom ICommand class is placed in another class, not in the MyPage code behind. Then from XAML I want to bind the button with its custom command class and then I do: MyPage.xaml: <Page ...> …

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• WPF DataGrid: Make cells readonly

  - by crauscher

  I use the following DataGrid <DataGrid Grid.Row="1" Grid.Column="1" Name="Grid" ItemsSource="{Binding}" AutoGenerateColumns="False" > <DataGrid.Columns> <DataGridTextColumn Header="Name" Width="100" Binding="{Binding Path=Name}"></DataGridTextColumn> …

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• WPF - Binding an ObservableCollection Dependency Property within a UserControl

  - by John

  I have a control class DragGrid : Grid { ... } which inherits from the original grid and enables dragging and resizing its child elements. I need to bind a custom DP named WorkItemsProperty to an observable collection of type WorkItem (implements INotifyPropertyChanged). Each element in the grid is bound to…

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• [C#/WPF] Combo box Item source = ObservableCollection & I need a '-None-' dummy entry at the top

  - by James

  I have a combo box using an observable collection as a datasource and I want a "dummy" value of "None" as the first item in the box as it controls filters against other data sources. Other databound objects also use the same observable collection so adding a "None" value directly to the datasource is not possible as I…

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• WPF binding Ancestor

  - by JerryVienna

  Hi Experts, I have problems with bindings. I want to use a UserControl (Intellibox from codeplex) but I only get error messages in the output window. Basically I have window grid ... stuff ... usercontrol (self written) ... stuff ... usercontrol (IntelliBox) In the Output window I get following stuff:…

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• WrapPanel doesn't wrap in WPF ListView

  - by Joan Venge

  I am using a ListView with an ItemTemplate like this: <Window.Resources> <DataTemplate x:Key="ItemTemplate"> <WrapPanel Orientation="Horizontal"> <Image Width="50" Height="50" Stretch="Fill" Source="{Binding Cover}"/> <Label Content="{Binding…

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• WPF Blurry Images - Bitmap Class

  - by Luke

  I am using the following sample at http://blogs.msdn.com/dwayneneed/archive/2007/10/05/blurry-bitmaps.aspx within VB.NET. The code is shown below. I am having a problem when my application loads the CPU is pegging 50-70%. I have determined that the problem is with the Bitmap class. The…

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• WPF DataTemplate Trigger set a property in a different DataTemplate

  - by Burt

  I have 2 DataTemplates (A & B). A contains an expander and the expander's HeaderTemplate is pointed at another DataTemplate (B). DataTemplate B is shown below: <DataTemplate x:Key="ProjectExpanderHeader"> <Border CornerRadius="2,2,0,0" …

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• WPF: Xaml, create an observable collection<object> in xaml in Dot Net 4.0

  - by Aran Mulholland

  the web site says you can in dot net 4.0 I cant seem to do it though, what assesmbly references and xmlns' do i need the following does not work xmlns:coll="clr-namespace:System.Collections.ObjectModel;assembly=mscorlib" <coll:ObservableCollection…

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• WPF Check/Uncheck all checkboxes located in a gridview

  - by toni

  Hi! I have a gridview with some columns. One of these columns is checkbox type. Then I have two buttons in my UI, one for check all and another for uncheck all. I would like to check all checkboxes in the column when I press the a button and uncheck…

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• wpf treeview ObjectDataProvider update - how?

  - by wonea

  I've been having trouble updating the data bindings which relates to a treeview. The dataset is mapped onto the ObjectDataProvider, passed through two data templates. Now I've tried updating the ObjectDataProvider with two calls, hoping that they…

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• WPF ContextMenu with bound items: Items.Count == 0 in ContextMenuOpening event

  - by OregonGhost

  I have a ContextMenu with the ItemsSource bound to the selected item of a list view, like this: <ContextMenu ItemsSource="{Binding Path=PlacementTarget.SelectedItem, RelativeSource={RelativeSource Self}, Converter={StaticResource…

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• WPF ListView SelectedItem is null

  - by ozczecho

  Hi All I have a Listview that has a checkbox as one of the columns. If I click anywhere but the actual checkbox the SelectedItem of the ListView is set to the current selected row, as expected. If, on the other hand I click onto the…

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• WPF Richtextbox XamlWriter behaviour

  - by Krishna

  I am trying to save some c# source code into the database. Basically I have a RichTextBox that users can type their code and save that to the database. When I copy and paste from the visual studio environment, I would like to…

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• WPF: TextBox expanding with surrounding Grid but not with text

  - by haagel

  I have a problem with a TextBox in an application... A window has a Grid with two columns. The left column contains a control with a constant width but with a height that adapts. The right column contains a TextBox that takes…

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• WPF Changing the user interface language at runtime

  - by user209293

  Hi I want to change my user interface language at run time. what is the best approach to do this? Regards Raju

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• WPF: Xaml, create an observable collection<object> in xaml in .NET 4.0

  - by Aran Mulholland

  the web site says you can in .NET 4.0 I cant seem to do it though, what assesmbly references and xmlns' do i need the following does not work xmlns:coll="clr-namespace:System.Collections.ObjectModel;assembly=mscorlib" …

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• WPF unwanted grid splitter behaviour

  - by SaphuA

  Hello, I have a simple grid with 3 columns (one of which contains a grid splitter). When resizing the grid and the left column reaches its minimum width, instead of doing nothing it increases the width of the right…

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• Wpf Listbox and Togglebutton

  - by Tan

  Hi iam using a listbox to show a list of items. in the listbox i ahve an togglebutton on every item. When i click on the toggle button the state of the togglebutton is pressed. But when i am scrolling down in the…

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• WPF Orthographic Camera. Region of view

  - by Evgeny

  Hello. I added Orthographic Camera to my project. I want to show my chart on screen proportional. For example height is 4 and width 4 (region from -2 to 2). I set width to 4 and it perfectly fit my square in…

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• Hyperlink and targetname in wpf

  - by Geetha

  Hi All, I want to display the pages in the frame by using the hyperlink control. but it is not working. Code: <Window x:Class="WPFNavigation.Window1"…

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• WPF MediaElement source in C# 2010

  - by Alex Farber

  The sample from the book is compiled and executed successfully in VS2008. Project contains file Bear.wmw in the project directory. XAML: MediaElement…

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