What does InitializeComponent() do, and how does it work? (WPF) In general first, but I would especially be interested to know the gory details of order of construction, and what happens when there are AttachedProperties. ...
Hi folks I have a problem with my WPF program. I'm trying to create an object that will add handlers to all controls in the same scope. The following line does not work. The event is not handled. element.AddHandler(CommandManager.PreviewCanExecuteEvent, new CanExecuteRoutedEventHandler(scope.CanExecutedHandler), true); I also have ...
I have a rectangle in my XAML and want to change it's "Canvas.Left" property in code behind: <UserControl x:Class="Second90.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="400" Height="300" KeyDown="txt_KeyDown"> <Canvas> <Rec...
I want to add a DataBinding per Codebehind for a attached Property and want to show the Canvas .Leftproperty in a textbox. How do I add this property? ...
Hi All, I was trying out attached properties and style triggers hoping to learn more about it. I wrote a very simple WPF windows app with an attached property: public static readonly DependencyProperty SomethingProperty = DependencyProperty.RegisterAttached( "Something", typeof(int), typeof(Wind...
I created an attached property, AttachedBehaviorsManager.Behaviors that is to be used as an MVVM helper class that ties events to commands. The property is of type BehaviorCollection (a wrapper for ObservableCollection). My issue is that the Binding for the Behavior's Command always winds up being null. When used on the buttons it works ...
I've been working with the WPF DataGrid and trying to centralize my cell style. During this refactor, I came across a need for my cell style to know validation logic that is different for each column. I decided to provide an attached property on my column object, which would contain the result of my validation logic (with the logic being...
I've run into an odd problem with attached properties where when I assign the property name in the call to RegisterAttached and name properly for the name of the attached property (say TranslateProperty and "Translate") the code for the attached property implementation doesn't fire. Just doesn't get called. If I change the string name to...
I have written a custom UserControl that is embedded into another UserControl. Something like the simple diagram below. UserControl_A UserControl_B TextBox_1 CheckBox_1 Button_Save In UserControl-B the validation is working reasonably well but I want to check for errors in the logic of UserControl-A ( OnSaveClick event of t...
I am trying to bind a property (Button.Background) to a property on my custom attached property. In a C# file I have public static class Square { public static readonly DependencyProperty PlayerProperty = DependencyProperty.RegisterAttached("Player", typeof(Player), typeof(UIElement), new FrameworkPropertyMetada...
Hi all, Assuming I have an attached property defined like that : public static string GetMyProperty(DependencyObject obj) { return (string)obj.GetValue(MyPropertyProperty); } public static void SetMyProperty(DependencyObject obj, string value) { obj.SetValue(MyPropertyProperty, value); } //...
What's the difference between a (custom) dependency property and an attached property in WPF? What are the uses for each? How do the implementations typically differ? ...
I have a routed event declared as such (names have been changed to protect the innocent): public class DragHelper : DependencyObject { public static readonly RoutedEvent DragCompleteEvent = EventManager.RegisterRoutedEvent( "DragComplete", RoutingStrategy.Bubble, typeof(DragRoutedEventHandler), typeof...
I'm trying to determine if Attached Behaviors are something we need in building controls for the forms in our application. Hence, I not only want to know how to create Attached Behaviors but want to see real instances in which they are used to solve problems. I used this MSDN article to create a UserControl with an attached property in ...
Hello everyone, I am writing .NET3.5, WPF application using Composite Application Library. Application is divided into several modules. In infrastructure module I have defined NetworkNode object. The Network module manages a collection of NetworkNodes and uses XmlSerializer to store/load this collection. So far everythings works. But...
I am attempting to create an AttachedProperty for a DataGridColumn within Silverlight 3.0 and I am having some issues. Here is the AttachedProperty: public class DataGridColumnHelper { public static readonly DependencyProperty HeaderProperty = DependencyProperty.RegisterAttached("Header", typeof(string), typeof(DataGridColu...
I have this style: <Style x:Key="ButtonStyle" TargetType="Button"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="Button"> <Grid> <StackPanel> <Image Source="{Binding Path=local:AttachedProperties.Im...
I have created an attached property to extend a Button class with additional state: <Button v:ExtensionHelper.OperationMode="{Binding MyObject.OperationMode}" Command="{Binding MyObject.Select}" Style="{StaticResource operationModeControlTemplateStyle}" /> Then I want to acces this value in the controltemplate using Datatriggers like ...
Hi guys, I'm trying to bind focus for my control to a property on the view model, like this: public class Focus { public static readonly DependencyProperty HasFocusProperty = DependencyProperty.RegisterAttached("HasFocus", t...
Hi Guys, When we use any attached property against any dependency object, I thunk it actually maps the property and the value with the dependency object. E.g. <DockPanel><TextBlock x:Name="MyText" DockPanel.Dock="Top"/></DockPanel> Here value "Top" is mapped with DockPanels DockProperty via the dependency object textblock "MyText" ...