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How to get all Attached Properties that are set to a DependencyObject in WinRT?


How to get all Attached Properties that are set to a DependencyObject in WinRT?

By : SKo00o
Date : November 17 2020, 12:00 PM
I wish this helpful for you The way I am doing it in my visual tree debugger tool is I scan the known assemblies in the package for all types and check for static properties of type DependencyProperty, then use a few heuristics to determine whether the dependency properties are attached - I check if there is a regular CLR property name-mapped to the dependency property (if there isn't - it usually indicates an attached property). Otherwise - if there is a Get method - it usually indicates an attached property. Once you have a list of all properties - you can call ReadLocalValue on the DependencyObject and if you get DependencyProperty.UnsetValue as a result - the property is not set on the object.
If anyone has a better method for doing it - I would really like to hear it since it would be great if I can simplify my code.
code :


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Garbage Collection when Attached dependencyobject is destroyed \ disconnected

Garbage Collection when Attached dependencyobject is destroyed \ disconnected


By : ephson
Date : March 29 2020, 07:55 AM
it should still fix some issue As I understand the new property system in the WPF, the DependecyObject itself stores the value. In your example, this would be the textblock. Don't get confused as you call a static member - it is supposed to be implemented like:
code :
element.SetValue(DockPanel.TopProperty, value);
Reading Attached Property from Non-DependencyObject

Reading Attached Property from Non-DependencyObject


By : user3230166
Date : March 29 2020, 07:55 AM
To fix this issue You read it backwards: you can't apply an attached property to a non-DependencyObject. You can however define an attached property on a class not deriving from DependencyObject. Typically a static class, like FocusManager in WPF.
x:Name is not an attached property: it's a directive. In the common case of a FrameworkElement, it's the same as FrameworkElement.Name. In the case of a custom class, its purpose is to define a field of the same name (which should be your case: you now have Refresh and Print fields available from code-behind). In every case (except inside a ResourceDictionary), it's added to the current XAML namescope.
code :
var dictionary = (INameScopeDictionary) NameScope.GetNameScope(yourWindow);
List properties of a DependencyObject?

List properties of a DependencyObject?


By : user3580468
Date : March 29 2020, 07:55 AM
I hope this helps you . You can do this using reflection, since DependencyProperties are (usually?) stored in public static fields of type DependencyProperty:
code :
private static IEnumerable<DependencyProperty> GetDependencyProperties(DependencyObject o)
{
    return from field in o.GetType().GetFields(BindingFlags.Public | 
                                               BindingFlags.FlattenHierarchy | 
                                               BindingFlags.Static)
           where field.FieldType == typeof(DependencyProperty)
           select (DependencyProperty)field.GetValue(null);
}
Localizing attached properties in XAML/WinRT

Localizing attached properties in XAML/WinRT


By : Juan Liner
Date : March 29 2020, 07:55 AM
To fix the issue you can do You need to handle attached properties a bit differently, i.e. their namespace must be included in the reource key like this:
code :
FoldersPageAppBarAddFolderButton.[using:Windows.UI.Xaml.Automation]AutomationProperties.Name
WinRT / UWP: Loading RelativePanel with XamlReader causes XamlParseException with RelativePanels Attached Properties

WinRT / UWP: Loading RelativePanel with XamlReader causes XamlParseException with RelativePanels Attached Properties


By : 최태훈
Date : March 29 2020, 07:55 AM
hop of those help? I'm trying to use the XamlReader to parse a XAML File on during runtime. Unfortunately I get a XamlParseException when the XamlReader tries to read the Relative Attributes like RelativePanel.Below. , Replace the element name in
code :
RelativePanel.AlignRightWith="logoBorder" 
RelativePanel.AlignRightWith="{Binding ElementName=logoBorder}"
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