'宣言 Public Overloads Shared Function GetDescendantFromType(Of T As DependencyObject)( _ ByVal parent As DependencyObject, _ ByVal allowSubclassOfType As Boolean, _ ByVal callback As Utilities.DependencyObjectSearchCallback(Of T) _ ) As T
public static T GetDescendantFromType<T>( DependencyObject parent, bool allowSubclassOfType, Utilities.DependencyObjectSearchCallback<T> callback ) where T: DependencyObject