Message in Russian (Русский)
Тип "<var>X</var>" должен быть производным от DependencyObject.
Unlocalized message
'<var>X</var>' type must derive from DependencyObject.
Search by GoogleТип "<var>X</var>" должен быть производным от DependencyObject.
'<var>X</var>' type must derive from DependencyObject.
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