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• WPF absolute positioning in InkCanvas

  - by Nilu

  Hi, I'm trying to position a rectangle in an InkCanvas. I am using the following method. Unfortunately when I add the rectangle it gets displayed at (0,0). Although when I query to see the whether the left property is 0 I get a non zero values. Does anyone know why this might be? Cheers, Nilu InkCanvas _parent = new InkCanvas(); private void…

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• WPF Update Binding when Bound directly to DataContext w/ Converter

  - by Adam

  Normally when you want a databound control to 'update,' you use the "PropertyChanged" event to signal to the interface that the data has changed behind the scenes. For instance, you could have a textblock that is bound to the datacontext with a property "DisplayText" <TextBlock Text="{Binding Path=DisplayText}"/> From here, if the…

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• Casting SelectedItem of WPF Combobox to Color causes exception

  - by Nick Udell

  I have a combobox databound to the available system colors. When the user selects a color the following code is fired: private void cboFontColour_SelectionChanged(object sender, SelectionChangedEventArgs e) { Color colour = (Color)(cboFontColour.SelectedItem); } This throws a Casting Exception with the following message: "Specified…

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• TwoWay Binding to ListBox SelectedItem on more than one list box in WPF

  - by Dan Bryant

  I have a scenario where I have a globally available Properties window (similar to the Properties window in Visual Studio), which is bound to a SelectedObject property of my model. I have a number of different ways to browse and select objects, so my first attempt was to bind them to SelectedObject directly. For example: <ListBox…

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• visual studio 2010 crystal reports wpf

  - by Han

  I created my report but I cant seem to bind the report viewer with the report source? I think they changed the way things are done?

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• WPF listbox : problem with selection

  - by KiTe

  Hello. In my XAML file, I have a ListBox declared like this : <ListBox x:Name="lstDeck" Height="280" ItemsSource="{Binding Path=Deck}" > <ListBox.ItemTemplate> <DataTemplate> <ListBoxItem Content="{Binding}" /> …

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• How to open a WPF Content Stream?

  - by roshan

  Here's the code snippet String str= ??????? // I want to assign c:/my/test.html to this string Uri uri= new Uri (str); Stream src = Application.GetContentStream(uri).Stream; What's the correct way to do this? I'm getting "URI not relative" Exception thrown

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• WPF, TreeView bug, can't select root item after item removed from treeview

  - by user275587

  I have a very weird bug in a three level deep TreeView. It is intermittent and I can't find how to reproduce it consistently. After programmatically removing, adding then removing some third level items, when I click on the root item it isn't selected. It can still expand/collapse but can't be selected with a mouse click and it…

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• WPF - Redrawing a Context Menu when Items change?

  - by Rachel

  I have a ItemsControl in a ScrollViewer, and when the items exceed the width of the ScrollViewer they are put into a ContextMenu and shown as a DropDown instead. My problem is that when the Context Menu is first loaded, it saves the saves the size of the Menu and does not redraw when more commands get added/removed. For…

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• WPF MediaPlayer doesn't play M4A?

  - by Nick

  I am trying to use a MediaPlayer instance to play M4A files. For those of you that aren't familiar, MediaPlayer is the non-XAML version of a MediaElement. There are pretty much the same, but I don't want any XAML, so I use a MediaPlayer instead. Anyways, it plays some M4A files just fine. The NaturalDuration of other M4A…

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• Scale a Visual Brush Background WPF

  - by user279244

  Hello, I have a Item called MiniMap in my xaml. I have set the background of it to a visual brush representting a canvas Item. Now, I want to scale the background to a ratio 0.7 . How can I do it? Thanks in advance <local:MiniMap Width="201" Height="134" x:Name="MiniMapItem" MinHeight="100" MinWidth="100" Opacity="1"…

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• WPF Tree doesn't work

  - by phenevo

  Could you tell me why I can't see subItems? I've got winforms apps and I added my wpfusercontrol:ObjectsAndZonesTree ServiceProvider is my webservice. Adn method to get listofcountires with subitems works properly (i get countires, regions from this countires, provinces etc...) ElementHost elementHost = new…

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• WPF Keyboard Remapping

  - by m1dst

  Hello, I am trying to remap the input of a textbox. For example. If a user enters a N then I would like to change it to a 9. I thought it might be best to try and catch it in the PreviewKeyDown event although I will also need to process paste attempts (I can solve that bit I think). Is PreviewKeyDown a…

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• WPF Usercontrol interaction with parent view / viewmodel

  - by obaylis

  Hi I have a mainView window which has its dataContext set to it's own viewModel. On that viewModel is a DateTime property which in turn is bound to a datepicker on my main view using 2 way binding. <toolkit:DatePicker DateSelected="{Binding mainDateTimeProperty, Mode=TwoWay}" /> This is all fine…

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• WPF Style Override breaks Validation Error event propagation

  - by Ben McMillan

  I have a custom control that overrides Window: public class Window : System.Windows.Window { static Window() { DefaultStyleKeyProperty.OverrideMetadata(typeof(Window), new System.Windows.FrameworkPropertyMetadata(typeof(Window))); } ... } It also has a…

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• WPF: Animation Only Runs Once

  - by Phil Sandler

  Very basic (I think) animation question. My animation only runs the first time "MyProp" gets set to false. If it gets set a second time, the animation doesn't run. I know my data trigger is getting hit, as the sound DOES play. The effect I want is for the animation to run, then reset the target…

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• WPF ListView Keyboard Navigation Problem

  - by Veer

  I've a listview like this ListView: ————----- Mango Orange Grapes Grapes Grapes Apple Strawberry Whenever i navigate using downarrow, the BlueHighlight pauses at the first Grapes, a dotted rectangle start from second grapes and pauses at the third grapes, then the BlueHighlight…

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• Typographic entities in WPF FlowDocument

  - by darja

  Is it a way to add to FlowDocument content specific typographic symbols (dashes, greek symbols, etc)?

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• WPF TabBarControl Setting Focus to element when tab changes

  - by Aran Mulholland

  I have a TabControl that is bound to a view model <TabControl ItemsSource="{Binding Path=ViewModelCollection}" > <TabControl.ItemContainerStyle> <Style TargetType="TabItem" …

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• WPF tabcontrol styling

  - by BrettRobi

  I've got a UI with a fairly standard look and feel. It has a column of icons on the left side which when clicked open a different user control on the right side. Currently I'm using separate controls for the selection icons and the usercontrol containment. I'm having strange…

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• Recording video in C# and WPF from mediaElement

  - by dc

  My application applies custom HLSL shader effects to a mediaElement using decorators. How can I record and save the modified video using the application itself in realtime?

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• WPF ComboBox IsSynchronised Default Value

  - by LnDCobra

  I am trying to display a default value (or even NO value) when selected index is -1, or selecteditem is null. This normally works perfectly fine but when I enable IsSynchronizedWithCurrentItem and set it to True, the first value in my DataTable gets displayed. How can I have…

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• WPF - Byte Array to Hex View (similar to Notepad++ HEX-Editor plugin)

  - by tenfour

  I am using an ItemsControl to display a List<byte> in hex. The ItemsPanelTemplate is a UniformGrid with a fixed number of columns: <ItemsControl HorizontalAlignment="Left" VerticalAlignment="Top" ItemsSource="{Binding}"> …

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• WPF: HierarchicalDataTemplate ItemsPanel

  - by Echilon

  I have a TreeView which uses a custom ItemsPanel to show the first level of items in a StackPanel, but I need to show subitems in a StackPanel too. The problem is, the second level of items are shown in a WrapPanel, and as HierarchicalDataTemplate…

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• Display Image from Byte Array in WPF - Memory Issues

  - by ChrisFletcher

  Hi, I've developed an application to capture and save images to a database, but I'm having an issue with memory usage. On my domain object I have 3 properties: Image - Byte array, contents are a jpg RealImageThumb - The byte array converted…

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