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I generate objects of framework Rectangle class (which is sealed) and programmatically add them to Canvas. I want to add some information to that objects. Is there such a possibility? I can get and set attached properties in XAML but these is not useful for me.
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In XAML, you set attached properties by using the syntax <attached property provider type>. <property name> , where the attached property provider is the class that defines the attached property. The following example shows how a child element of DockPanel can set the DockPanel. Dock property value.
Code-behind is a term used to describe the code that is joined with markup-defined objects, when a XAML page is markup-compiled. This topic describes requirements for code-behind as well as an alternative inline code mechanism for code in XAML.
Attached properties are properties which can be set on any wpf object (basically, at least a DependencyObject) via the DependencyObject. SetValue method. The purpose for this mechanism is to "attach" to other objects information needed by parent objects, not the child objects themselves. For example, the Grid.
An attached property is intended to be used as a type of global property that is settable on any object. In Windows Presentation Foundation (WPF), attached properties are typically defined as a specialized form of dependency property that does not have the conventional property wrapper”.
You can set attached properties in code, something like this:
OwningClass.SetMyAttachedProperty(textBox, true);
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