ExtensionMethods.FindAncestor Method
Definition
Important
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Overloads
| FindAncestor<TAncestorType,TElementType>(TElementType, Func<TElementType,TElementType>) |
Helper method that finds the first ancestor of a given Type in the logical or visual tree. |
| FindAncestor<TAncestorType>(Visual) |
Helper method that finds the first ancestor of a given Type in the logical or visual tree. |
| FindAncestor<TElementType>(TElementType, Func<TElementType,TElementType>, Func<TElementType,Boolean>) |
Helper method that finds the first ancestor in the logical or visual tree that is accepted by the ancestor selector function. |
FindAncestor<TAncestorType,TElementType>(TElementType, Func<TElementType,TElementType>)
Helper method that finds the first ancestor of a given Type in the logical or visual tree.
public:
generic <typename TAncestorType, typename TElementType>
where TAncestorType : class[System::Runtime::CompilerServices::Extension]
static TAncestorType FindAncestor(TElementType obj, Func<TElementType, TElementType> ^ parentEvaluator);public static TAncestorType FindAncestor<TAncestorType,TElementType> (this TElementType obj, Func<TElementType,TElementType> parentEvaluator) where TAncestorType : class;static member FindAncestor : 'ElementType * Func<'ElementType, 'ElementType> -> 'AncestorType (requires 'AncestorType : null)<Extension()>
Public Function FindAncestor(Of TAncestorType As Class, TElementType As Class) (obj As TElementType, parentEvaluator As Func(Of TElementType, TElementType)) As TAncestorTypeType Parameters
- TAncestorType
The type of ancestor to find.
- TElementType
The base type of intermediate elements in the ancestor tree.
Parameters
- obj
- TElementType
The object at which to begin searching.
- parentEvaluator
- Func<TElementType,TElementType>
The method used to determine the parent of an element.
Returns
The first ancestor of type T in the parent chain of obj, or null if no ancestor is found.
Applies to
FindAncestor<TAncestorType>(Visual)
Helper method that finds the first ancestor of a given Type in the logical or visual tree.
public:
generic <typename TAncestorType>
where TAncestorType : System::Windows::DependencyObject[System::Runtime::CompilerServices::Extension]
static TAncestorType FindAncestor(System::Windows::Media::Visual ^ obj);public static TAncestorType FindAncestor<TAncestorType> (this System.Windows.Media.Visual obj) where TAncestorType : System.Windows.DependencyObject;static member FindAncestor : System.Windows.Media.Visual -> 'AncestorType (requires 'AncestorType :> System.Windows.DependencyObject)<Extension()>
Public Function FindAncestor(Of TAncestorType As DependencyObject) (obj As Visual) As TAncestorTypeType Parameters
- TAncestorType
The type of ancestor to find.
Parameters
- obj
- Visual
The object at which to begin searching.
Returns
The first ancestor of type T in the parent chain of obj, or null if no ancestor is found.
Remarks
The type of obj is Visual rather than DependencyObject in order to disambiguate this method from Microsoft.VisualStudio.PlatformUI.Shell.ExtensionMethods.FindAncestor(ViewElement element). If you need to find an ancestor of a non-Visual DependencyObject you should call FindAncestor<TAncestorType, DependencyObject>(obj, GetVisualOrLogicalParent) directly.
Applies to
FindAncestor<TElementType>(TElementType, Func<TElementType,TElementType>, Func<TElementType,Boolean>)
Helper method that finds the first ancestor in the logical or visual tree that is accepted by the ancestor selector function.
public:
generic <typename TElementType>
[System::Runtime::CompilerServices::Extension]
static System::Object ^ FindAncestor(TElementType obj, Func<TElementType, TElementType> ^ parentEvaluator, Func<TElementType, bool> ^ ancestorSelector);public static object FindAncestor<TElementType> (this TElementType obj, Func<TElementType,TElementType> parentEvaluator, Func<TElementType,bool> ancestorSelector);static member FindAncestor : 'ElementType * Func<'ElementType, 'ElementType> * Func<'ElementType, bool> -> obj<Extension()>
Public Function FindAncestor(Of TElementType) (obj As TElementType, parentEvaluator As Func(Of TElementType, TElementType), ancestorSelector As Func(Of TElementType, Boolean)) As ObjectType Parameters
- TElementType
The base type of intermediate elements in the ancestor tree.
Parameters
- obj
- TElementType
The object at which to begin searching.
- parentEvaluator
- Func<TElementType,TElementType>
The method used to determine the parent of an element.
Returns
The first ancestor in the parent chain of obj accepted by the the ancestor selector function.