DependencyObjectExtensions.FindAscendant Method

Definition

Namespace:

Microsoft.Toolkit.Uwp.UI

Assembly:

Microsoft.Toolkit.Uwp.UI.dll

Package:

Microsoft.Toolkit.Uwp.UI v7.1.2

Overloads

FindAscendant(DependencyObject, Type)	Find the first ascendant element of a given type.
FindAscendant(DependencyObject, String, StringComparison)	Find the first ascendant of type Windows.UI.Xaml.FrameworkElement with a given name.
FindAscendant<T,TState>(DependencyObject, TState, Func<T,TState,Boolean>)	Find the first ascendant element matching a given predicate.
FindAscendant<T>(DependencyObject)	Find the first ascendant element of a given type.
FindAscendant<T>(DependencyObject, Func<T,Boolean>)	Find the first ascendant element matching a given predicate.

FindAscendant(DependencyObject, Type)

Find the first ascendant element of a given type.

public static Windows.UI.Xaml.DependencyObject? FindAscendant (this Windows.UI.Xaml.DependencyObject element, Type type);

static member FindAscendant : Windows.UI.Xaml.DependencyObject * Type -> Windows.UI.Xaml.DependencyObject

<Extension()>
Public Function FindAscendant (element As DependencyObject, type As Type) As DependencyObject

Parameters

element

Windows.UI.Xaml.DependencyObject

The starting element.

type

Type

The type of element to match.

Returns

Windows.UI.Xaml.DependencyObject

The ascendant that was found, or null.

FindAscendant(DependencyObject, String, StringComparison)

Find the first ascendant of type Windows.UI.Xaml.FrameworkElement with a given name.

public static Windows.UI.Xaml.FrameworkElement? FindAscendant (this Windows.UI.Xaml.DependencyObject element, string name, StringComparison comparisonType = System.StringComparison.Ordinal);

static member FindAscendant : Windows.UI.Xaml.DependencyObject * string * StringComparison -> Windows.UI.Xaml.FrameworkElement

<Extension()>
Public Function FindAscendant (element As DependencyObject, name As String, Optional comparisonType As StringComparison = System.StringComparison.Ordinal) As FrameworkElement

Parameters

element

Windows.UI.Xaml.DependencyObject

The starting element.

name

String

The name of the element to look for.

comparisonType

StringComparison

The comparison type to use to match name.

Returns

Windows.UI.Xaml.FrameworkElement

The ascendant that was found, or null.

FindAscendant<T,TState>(DependencyObject, TState, Func<T,TState,Boolean>)

Find the first ascendant element matching a given predicate.

public static T? FindAscendant<T,TState> (this Windows.UI.Xaml.DependencyObject element, TState state, Func<T,TState,bool> predicate) where T : Windows.UI.Xaml.DependencyObject;

static member FindAscendant : Windows.UI.Xaml.DependencyObject * 'State * Func<'T, 'State, bool (requires 'T :> Windows.UI.Xaml.DependencyObject)> -> 'T (requires 'T :> Windows.UI.Xaml.DependencyObject)

<Extension()>
Public Function FindAscendant(Of T As DependencyObject, TState As DependencyObject) (element As DependencyObject, state As TState, predicate As Func(Of T, TState, Boolean)) As T

Type Parameters

T

The type of elements to match.

TState

The type of state to use when matching nodes.

Parameters

element

Windows.UI.Xaml.DependencyObject

The starting element.

state

TState

The state to give as input to predicate.

predicate

Func<T,TState,Boolean>

The predicatee to use to match the ascendant nodes.

Returns

T

The ascendant that was found, or null.

FindAscendant<T>(DependencyObject)

Find the first ascendant element of a given type.

public static T? FindAscendant<T> (this Windows.UI.Xaml.DependencyObject element) where T : Windows.UI.Xaml.DependencyObject;

static member FindAscendant : Windows.UI.Xaml.DependencyObject -> 'T (requires 'T :> Windows.UI.Xaml.DependencyObject)

<Extension()>
Public Function FindAscendant(Of T As DependencyObject) (element As DependencyObject) As T

Type Parameters

T

The type of elements to match.

Parameters

element

Windows.UI.Xaml.DependencyObject

The starting element.

Returns

T

The ascendant that was found, or null.

FindAscendant<T>(DependencyObject, Func<T,Boolean>)

Find the first ascendant element matching a given predicate.

public static T? FindAscendant<T> (this Windows.UI.Xaml.DependencyObject element, Func<T,bool> predicate) where T : Windows.UI.Xaml.DependencyObject;

static member FindAscendant : Windows.UI.Xaml.DependencyObject * Func<'T, bool (requires 'T :> Windows.UI.Xaml.DependencyObject)> -> 'T (requires 'T :> Windows.UI.Xaml.DependencyObject)

<Extension()>
Public Function FindAscendant(Of T As DependencyObject) (element As DependencyObject, predicate As Func(Of T, Boolean)) As T

Type Parameters

T

The type of elements to match.

Parameters

element

Windows.UI.Xaml.DependencyObject

The starting element.

predicate

Func<T,Boolean>

The predicatee to use to match the ascendant nodes.

Returns

T

The ascendant that was found, or null.