I mean if i have some custom event with bubbling strategy, then who must declare preview event and who must care about its raising? Me or WPF? for example I has class with event public class WindowControl : ContentControl { public static readonly RoutedEvent StateChangedEvent; static WindowControl() { WindowControl.StateChangedEvent ...
I have a main application window that also implements a dock panel. At the bottom of one of the existing dock panels, I want to add a window that the user can hide or view at will. What's the best way to implement this? I can envision most of the code behind this, I just need to figure out the appropriate control for this window to appea...
How I can add additional condition of certain keyboard key, say, Ctrl-key state to WPF MouseLeftButtonDown event-handler? private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { ... } ...
Hello, I've been beating my head against a WPF Popup issue, and am hoping someone can help me:) The outline goes like this: Our app stores a list of UIObjects - these represent elements that are displayed in a viewport 3d (via a member UIRenderObject, which is just a flat, square mesh with a bitmap on it) and in a treeview (via a membe...
Hey I have a TreeView whose ItemsSource is set to a Model I have. 3 levels deep is an object whose state can change and, rather than write a View and ViewModel for each stage (very lengthy business) I wanted to just update this using code. So basically I have an event that is fired once my model updates, I catch it then find the TreeV...
I'm using M-V-VM with dialog boxes. The process I'm using for creating dialogs is as follows: A ViewModel command wishes to open a dialog. It creates the ViewModel for the dialog (we'll call it DialogViewModel). It then passes the ViewModel off to a DialogProvider to create the actual View. This makes my dialog boxes testable, as the...
Hi, I have a combo with more than one value in it (different bindings from the same source) I would like to create a combo box where the user could sort by those columns and also include a header to clarify the informations Example : Item No | Name | Rank 00 | foo | 0 01 | bar | 2 02 | too | 1 We could sort by Item ...
What is the best solution for not being able to use data binding on a ValidationRule property since ValiationRule is not a DependencyObject? Below is an example of what I would like to do. I want to be able to validate the text in the TextBox against some other DependencyProperty. <TextBox Name="myTextBox"> <TextBox.Text> <...
I have spent the whole day trying to make my application use threads but with no luck. I have read much documentation about it and I still get lots of errors, so I hope you can help me. I have one big time consuming method which calls the database and updates the GUI. This has to happen all the time(or about every 30 seconds). public c...
Is there a way to specify DataGrid columns declaratively using a binding? (And to set the columns' properties using this binding?) Idealy, I would have a list of objects (e.g. rows) databound to the ItemsSource and one of their properties would be a dictionary (or a list of objects of a certain class or whatever) with a name and a value....
My co-worker threatened to put me on TheDailyWTF today because of my property I wrote to be used to build a 3-tiered treeview with ItemsControl. I bear you the footprint: ObservableCollection<KeyValuePair<string, ObservableCollection<KeyValuePair<string, ObservableCollection<MyType>>>>>; My goal was to create an ItemsControl that wou...
Hello, I have a big problem. I try to bind my WPF Datagrid to a table, created with inner join. I have created a class for the info to convert successfully: public class NeshtoSi { public NeshtoSi() { } public string ssn; public string name; public string surname; } And then I create t...
After running WPF animations on dependency properties in code behind, the dependency properties can no longer be set using SetValue. They can only be changed through animations. I want to change a dependency property, some times through short animations, sometimes immediately in code. So how can I remove the animation from a dependency...
I want my application to be able to display certain information when no user input has been detected for some time (like a Welcome/Instruction layer). Is there anyway to have the application register any form of user input (keyboard, mousedown/move etc) without having to write handlers for each of those events? Is there a generic input ...
Hi I got a very simple user control (visifire charts + datepickers and some radiobuttons to control filtering etc) <GroupBox Header="Scale" Width="159" HorizontalAlignment="Left" Margin="10,47,0,0" Height="38" VerticalAlignment="Top" Name="scalingBox"> <Canvas Height="16"> <RadioButton Name="scaleDays" Content="Days" GroupName="g2...
I am building an application that requires a Datagrid that can be hidden. I have tried wrapping it in an Expander but it isn't exactly ideal. Ideally what I would like is the ability to have the DataGrid "floating" outside the main window without affecting the other controls and just having a button to hide and show it when needed. Is t...
How do I set the DataContext of "myElement" to the same DataContext as the user control in XAML? I have been able to do it in code-behind via myElement.DataContext = this.DataContext in the UserControl constructor, but I'm trying to understand how to do the same thing in XAML. This is related to creating virtual branches to the logical ...
I am using a DispatchTimer to perform a count down before triggering the release on a camera. The UpdateCountdown method is used to change the image displayed to the user before the camera fires. Rather than having the TakePicture method execute immediately, I would like have a slight delay after the counter reaches zero and the last i...
Is there a technical reason why ValidationRule is not a DependencyObject? ...
I wanna set a TabControl that its header are in the left side instead of on top, how do I do that? ...