UIHelperTryGetDescendantT - метод

[CanBeNullAttribute]
public static T TryGetDescendant<T>(
	[CanBeNullAttribute] DependencyObject source
)
where T : DependencyObject

<CanBeNullAttribute>
Public Shared Function TryGetDescendant(Of T As DependencyObject) ( 
	<CanBeNullAttribute> source As DependencyObject
) As T

public:
[CanBeNullAttribute]
generic<typename T>
where T : DependencyObject
static T TryGetDescendant(
	[CanBeNullAttribute] DependencyObject^ source
)

[<CanBeNullAttribute>]
static member TryGetDescendant : 
        [<CanBeNullAttribute>] source : DependencyObject -> 'T  when 'T : DependencyObject