Class ExpanderExt

Overrides standard System.Windows.Controls.Expander control. Adds ChildHasFocus property to extend functional possibilities.

Inheritance

System.Object

ExpanderExt

Namespace: Syncfusion.Windows.Tools.Controls

Assembly: Syncfusion.Tools.Wpf.dll

Syntax

public class ExpanderExt : Expander

Constructors

ExpanderExt()

Declaration

public ExpanderExt()

Fields

ChildHasFocusProperty

Identifies ChildHasFocus read-only dependency property.

Declaration

public static readonly DependencyProperty ChildHasFocusProperty

Field Value

Type
System.Windows.DependencyProperty

ChildHasFocusPropertyKey

Identifies ChildHasFocus dependency property key.

Declaration

protected static readonly DependencyPropertyKey ChildHasFocusPropertyKey

Field Value

Type
System.Windows.DependencyPropertyKey

Properties

ChildHasFocus

Gets or sets a value indicating whether [child has focus].

Declaration

public bool ChildHasFocus { get; protected set; }

Property Value

Type	Description
System.Boolean	true if [child has focus]; otherwise, false.

Methods

OnGotKeyboardFocus(KeyboardFocusChangedEventArgs)

Invoked when an unhandled System.Windows.Input.Keyboard.GotKeyboardFocus attached event reaches an element in its route that is derived from this class. Sets to true ChildHasFocus property.

Declaration

protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)

Parameters

Type	Name	Description
System.Windows.Input.KeyboardFocusChangedEventArgs	e	The instance containing the event data.

OnHeaderChanged(Object, Object)

This method adds header to expander.

Note:

Before adding new header removes it from the logical tree of the previous parent.

Declaration

protected override void OnHeaderChanged(object oldHeader, object newHeader)

Parameters

Type	Name	Description
System.Object	oldHeader	Object that represents old header.
System.Object	newHeader	Object that represents new header.

OnInitialized(EventArgs)

Raises the System.Windows.FrameworkElement.Initialized event. This method is invoked whenever System.Windows.FrameworkElement.IsInitialized is set to true internally.

Declaration

protected override void OnInitialized(EventArgs e)

Parameters

Type	Name	Description
System.EventArgs	e	The System.Windows.RoutedEventArgs that contains the event data.

OnLostKeyboardFocus(KeyboardFocusChangedEventArgs)

Invoked when an unhandled System.Windows.Input.Keyboard.LostKeyboardFocus attached event reaches an element in its route that is derived from this class. Sets to false ChildHasFocus property.

Declaration

protected override void OnLostKeyboardFocus(KeyboardFocusChangedEventArgs e)

Parameters

Type	Name	Description
System.Windows.Input.KeyboardFocusChangedEventArgs	e	The instance containing the event data.