dependency-properties

I am having trouble getting an attached property value to propagate down the tree from a parent to a child in the visual hierarchy. The setup is as follows: I have a custom panel that instantiates a Viewport3D. The Panel then handles the child added and removed to create and add an inherited Visual3D class for each child item. I am trying to declare an attached property called AttachedToggle property. I would like to have this property reside in an external owner class called AttachedToggle which implements the single attached dependency property IsChecked and allow either the parent Panel or

This is how I register a DependencyProperty : public static readonly DependencyProperty UserProperty = DependencyProperty.Register("User", typeof (User), typeof (NewOnlineUserNotifier)); public User User { get { return (User)GetValue(UserProperty); } set { SetValue(UserProperty, value); } } The third parameter of the DependencyProperty.Register method requires you to specify the type of the Control where the Dependency Property resides in (in this case, my User Control is called NewOnlineUserNotifier ). My question is, why do you actually specify the type of the owner, and what happens if you

I have a custom control called EnhancedTextBox which is a UserControl that has a TextBox and a Button . To the consumer I want it to mostly look like a TextBox, so I did the following: <UserControl.Template> <ControlTemplate TargetType="textBoxes:EnhancedTextBox"> ... <TextBox Text="{TemplateBinding Text}"... And in EnhancedTextBox I have public static readonly DependencyProperty TextProperty = DependencyProperty.Register("Text", typeof (String), typeof (EnhancedTextBox)); public String Text { get { return (String) GetValue(TextProperty); } set { SetValue(TextProperty, value); } } Yet, when I

I need to define a DependencyProperty in a converter class because I need this data to make the conversion and this data is in another object, not the one I'm binding to. My converter class is the following: public class LEGOMaterialConverter : DependencyObject, IValueConverter { public DependencyProperty MaterialsListProperty = DependencyProperty.Register("MaterialsList", typeof(Dictionary<int, LEGOMaterial>), typeof(LEGOMaterialConverter)); public Dictionary<int, LEGOMaterial> MaterialsList { get { return (Dictionary<int, LEGOMaterial>)GetValue(MaterialsListProperty); } set { SetValue

Can anyone explain how is dependency property implemented? Is it just a static dictionary that is declared in base class with a reference of given instance as a key?I can't find any resources about this in internet... Thanks a lot Szymon Rozga I see two questions: How do dependency properties work? The MSDN article on Properties in WPF is a great series on dependency properties. Should be a good overview to get you started. How are dependency properties implemented? You won't find any resources on this because why would Microsoft want to expose their implementation of DP? That being said, that

I have a MainWindow containing a UserControl, both implemented in MVVM-pattern. The MainWindowVM has properties that I want to bind to properties in the UserControl1VM. But this doesn't work. Here's some code (the viewmodels use some kind of mvvm-framework that implement the INotifyPropertyChanged in a ViewModelBase-class but that's hopefully no problem): MainWindow.xaml: <Window x:Class="DPandMVVM.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:DPandMVVM" Title="MainWindow" Height=