Class Panel

Provides a base class for all Panel elements. Use Panel elements to position and arrange child objects in a UI page.

Inheritance
System.Object
DependencyObject
UIElement
FrameworkElement
Panel
Canvas
EdgePanel
DockPanel
Grid
DataGridCellsPresenter
DataGridColumnHeadersPresenter
DataGridDetailsPresenter
DataGridRowsPresenter
TabPanel
UniformGrid
StackPanel
VirtualizingPanel
WrapPanel
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: System.Windows.Controls
Assembly: OpenSilver.dll
Syntax
public abstract class Panel : FrameworkElement, IFrameworkElement, IUIElement, IDependencyObject

Fields

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BackgroundProperty

Identifies the Background dependency property.

Declaration
public static readonly DependencyProperty BackgroundProperty
Field Value
Type Description
DependencyProperty
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IsItemsHostProperty

Identifies the IsItemsHost dependency property.

Declaration
public static readonly DependencyProperty IsItemsHostProperty
Field Value
Type Description
DependencyProperty

Properties

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Background

Gets or sets a Brush that is used to fill the panel.

Declaration
public Brush Background { get; set; }
Property Value
Type Description
Brush

The brush used to fill the panel. The default is null.
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Children

Gets the collection of child elements of the panel.

Declaration
public UIElementCollection Children { get; }
Property Value
Type Description
UIElementCollection
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HasLogicalOrientation

Gets a value that indicates whether this Panel arranges its descendants in a single dimension.

Declaration
protected virtual bool HasLogicalOrientation { get; }
Property Value
Type Description
System.Boolean

true if the orientation of the Panel is in one dimension; otherwise, false.
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IsItemsHost

Gets a value that indicates whether this Panel is a container for UI items that are generated by an ItemsControl.

Declaration
public bool IsItemsHost { get; }
Property Value
Type Description
System.Boolean
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LogicalChildren

Gets an enumerator that can iterate the logical child elements of this Panel element.

Declaration
protected override IEnumerator LogicalChildren { get; }
Property Value
Type Description
System.Collections.IEnumerator

An System.Collections.IEnumerator. This property has no default value.
Overrides
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LogicalOrientation

The Orientation of the panel, if the panel supports layout in only a single dimension.

Declaration
protected virtual Orientation LogicalOrientation { get; }
Property Value
Type Description
Orientation

The Orientation of the panel. This property has no default value.
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ProgressiveRenderingChunkSize

Gets or sets local value of chunk size to render progressively in a batch. Setting this option can improve performance. Value lower than 0 means progressive rendering is disabled. Value of 0 means it uses the size defined at the application level, see ProgressiveRenderingChunkSize. Default value is 0.

Declaration
public int ProgressiveRenderingChunkSize { get; set; }
Property Value
Type Description
System.Int32
Remarks

A value close to 1 can break UI in some cases.

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VisualChildrenCount

Gets the number of child UIElement objects in this instance of Panel.

Declaration
protected override int VisualChildrenCount { get; }
Property Value
Type Description
System.Int32

The number of child UIElement objects.
Overrides

Methods

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CreateUIElementCollection(FrameworkElement)

Creates a new UIElementCollection.

Declaration
protected virtual UIElementCollection CreateUIElementCollection(FrameworkElement logicalParent)
Parameters
Type Name Description
FrameworkElement logicalParent

The logical parent element of the collection to be created.
Returns
Type Description
UIElementCollection

An ordered collection of elements that have the specified logical parent.
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GetTemplateChild(String)

Retrieves the named element in the instantiated ControlTemplate visual tree.

Declaration
protected DependencyObject GetTemplateChild(string childName)
Parameters
Type Name Description
System.String childName

The name of the element to find.
Returns
Type Description
DependencyObject

The named element from the template, if the element is found. Can return null if no element with name childName was found in the template.
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GetVisualChild(Int32)

Gets a UIElement child of this Panel at the specified index position.

Declaration
protected override UIElement GetVisualChild(int index)
Parameters
Type Name Description
System.Int32 index

The index position of the UIElement child.
Returns
Type Description
UIElement

A UIElement child of the parent Panel element.
Overrides
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INTERNAL_OnAttachedToVisualTree()

Declaration
protected override void INTERNAL_OnAttachedToVisualTree()
Overrides

Extension Methods