Thomas Levesque • 8/23/2009

[WPF] Markup extensions and templates

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This technical article addresses a common WPF issue where custom markup extensions (like a network connectivity checker) work outside templates but fail inside ControlTemplates. It explains that the TargetObject is a SharedDp during template parsing and provides a solution: defer evaluation by returning the extension itself from ProvideValue when inside a template, ensuring proper updates for all template instances.

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#data binding #Wpf #Xaml
[WPF] Markup extensions and templates

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