wpf

Do WPF ComboBox SelectedIndex and SelectedValue have different behavior on SelectionChanged event?

Hello guys I got this cbxJobPosition_SelectionChanged firing as expected. The problem is when a external method tries to set cbxJobPosition. cbxJobPosition is databinded with a list of objects of type JobPosition: JobPositionID: 1, JobPositionName: Manager JobPositionID: 2, JobPositionName: Employee JobPositionID: 3, JobPositionName:...

Is there a way to display formatted rich text in WPF datagrid?

I'm trying to display rich text inside of a column of a WPF DataGrid (from WPF Toolkit). Something like this: Name: Bob Title: Doctor I am creating a data object programmatically in code with the string property. And I want this string to contain the rich text and than bind it to the column contents. Is that possible? Would really ap...

Improving WPF memory usage

Hello developers Is there any way you can store the UI state to disk when a WPF form has been minimised. I have a complex GUI with few Tab Controls and it consumes quite a bit of memory which is kept allocated when the application is not active. I was hoping one of you may have got this working along the lines (or similar) Application...

Draw a semicircle / half circle in WPF / C#

Hello, I need to draw a semicircle / half circle in WPF. Any idea how to do that? Thanks for any hint! ...

WPF MediaElement pauses when trying to play Windows Media Center recording

I have an WPF application that starts a live tv recording using Windows Media Center, using the Windows Media Center SDK, waits 2 minutes and then plays the currently recording file (.wtv) in a WPF MediaElement. The problem is that the video visual will freeze and it is not consistent on when it happens. I have looked into it and discov...

WPF: Adorner not receiving any keyboard events

Hello, I have an Adorner and I want that Adorner to be able to receive keyboard events, but I'm having problems with those whole focus stuff. Can somebody please tell, what has to be done to make an adorner able to receive keyboard events? Thank you very much for any help! ...

WPF: Bind/Apply Filter on Boolean Property

I want to apply a filter to a ListBox accordingly to the IsSelected property of a CheckBox. At the moment I have something like this. XAML <CheckBox Name="_filterCheckBox" Content="Filter list" Checked="ApplyFilterHandler"/> <ListBox ItemsSource="{Binding SomeItems}" /> CodeBehind public ObservableCollection<string> SomeItems { ...

WPF WebBrowser, unable to run Javascript and applet in Popups windows

Hello All, I have a desktop application that has a control with a WebBrowser control inside. Everything works fine except with Siebel CMR popups. When it opens a new popup , Siebel tries to load an applet in the popup window but it doesn't work , it works fine in the main browser. This works perfectly with IE also. It seems to be relate...

How to resize a group of vectors in Expression Blend/WPF/Silverlight ?

So say for example I created a few small squares in expression blend. I then group them together by selecting them, right clicking and selecting "Group Into -> Grid" So now that they are in the grid, I'd like to be able to resize this grid and then they would resize but it doesn't happen, it just resizes the grid but leaves the vectors...

WindowsFormsHost and DependencyProperty

I've got a Windows Forms control that I'm attempting to wrap as a WPF control using the WindowsFormsHost class; I would like to bind the legacy control to a view-model. Specifically, the control exposes a grid property, GridVisible, that I would like to bind a view-model to. I'm using a private, static backing field and a static, read-on...

Path vs GeometryDrawing

Just wondering what's lighter, I'm going to have a control that draws 280 * 4 my SegmentControl, which is a quarter of a circle, and I'm just wondering what's the way that takes least memory to draw said segment. GeometryDrawing: <Image> <Image.Source> <DrawingImage> <DrawingImage.Drawing> <Geome...

WPF Infinite loop in references found while processing the Template

I am pretty new to WPF and am getting this error after my mouse is over my custom listbox item. Error: Infinite loop in references found while processing the Template for an element named '' of type 'System.Windows.Controls.TextBox'. <Window.Resources> <ControlTemplate x:Key="MouseOverFocusTemplate" > <Grid> ...

No Main() in WPF?

I am very beginner when it comes to programming but I was sure that one of the universal rules was that an program starts with Main(). I do not see one when I create a WPF project. Is Main() simply named something differently in WPF? ...

WPF Validation with ContentPresenter

Hi, I have a WPF user control which needs to validate some fields. It is bound to a class implementing IDataErrorInfo. When I set the user control as the content of my ContentPresenter in another, already open, window, I can see validation occurring, and error messages being returned, however, I don't get any validation adorner - e.g....

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

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" <coll:ObservableCollection x:TypeArguments="x:Object"> <MenuItem Command="ApplicationCommands.Cut"/> <MenuIte...

Can you define a ResourceDictionary.MergedDictionary together with other (local) resources in <Windows.Resources> ?

I would like to refer to a MergedDictionary together with locally declared resources in my Windows.Resources. However, I'm getting this error: "All objects added to an IDictionary must have a Key attribute or some other type of key associated with them." Is it possible to mix local resources together with imported resources ...

Binding a WPF ComboBox to a different ItemsSource within a ListBox DataTemplate

I have a ListBox that contains a textbox and a combobox in its datatemplate: <ListBox Height="147" Margin="158,29,170,0" Name="PitcherListBox" VerticalAlignment="Top" ItemsSource="{Binding SomeCollectionOfObjects}" Background="Black"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Hori...

How can I force WPF to make data bindings without showing the window?

I want to unit test a WPF application and one scenario is to check that data bindings are correct. The simple way to do that would be to create the form, force it to bind to data and then compare the values from the controls with the expected ones. Is there any way to do that? ...

Background custom button animation using WPF

Hi, I am using Resources dictionaries to customize my controls and apply them as themes to my WPF application so I have implemented one for the button control. A code snippet for my custom Button.xaml is (its namespace is MyWPFApp.Themes): <ResourceDictionary ...> ... <LinearGradientBrush x:Key="NormalBackground" ...

How do I add VisualStateManager to my Surface project?

I have a surface project and I would like to use controls designed in Blend. I added these controls to my microsoft surface project, but I receive an error when I try to compile it. Error 1 The tag 'VisualStateManager.VisualStateGroups' does not exist in XML namespace 'http://schemas.microsoft.com/winfx/2006/xaml/presentation'. Line 12...