BitmapCache Class

Definition

Namespace:

Windows.UI.Xaml.Media

Represents the behavior of caching a visual element or tree of elements as bitmap surfaces.

public ref class BitmapCache sealed : CacheMode

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
class BitmapCache final : CacheMode

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
public sealed class BitmapCache : CacheMode

Public NotInheritable Class BitmapCache
Inherits CacheMode

Inheritance

Object Platform::Object IInspectable DependencyObject CacheMode BitmapCache

Attributes

ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Windows requirements

Device family	Windows 10 (introduced in 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v1.0)

Examples

Use any of these syntax forms to set UIElement.CacheMode to a value other than the null default. Don't do this routinely without testing first, see "Remarks" in UIElement.CacheMode.

<Canvas CacheMode="BitmapCache">
  ...
</Canvas>

canvas1.CacheMode = new BitmapCache(); //canvas1 is an existing named element in UI

// <Canvas x:Name="canvas1"/>
#include <winrt/Windows.UI.Xaml.Media.h>
...
canvas1().CacheMode(Windows::UI::Xaml::Media::BitmapCache{});

canvas1->CacheMode = ref new BitmapCache(); //canvas1 is an existing named element in UI

Remarks

This class is infrastructure, and provides the underlying run-time value for the behavior when you specify CacheMode="BitmapCache" in XAML markup, or create a new BitmapCache in code to set UIElement.CacheMode.

Constructors

BitmapCache()

Initializes a new instance of the BitmapCache class.

Properties

Dispatcher

Gets the CoreDispatcher that this object is associated with. The CoreDispatcher represents a facility that can access the DependencyObject on the UI thread even if the code is initiated by a non-UI thread. (Inherited from DependencyObject)

Methods

ClearValue(DependencyProperty)	Clears the local value of a dependency property. (Inherited from DependencyObject)
GetAnimationBaseValue(DependencyProperty)	Returns any base value established for a dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject)
GetValue(DependencyProperty)	Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject)
ReadLocalValue(DependencyProperty)	Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject)
RegisterPropertyChangedCallback(DependencyProperty, DependencyPropertyChangedCallback)	Registers a notification function for listening to changes to a specific DependencyProperty on this DependencyObject instance. (Inherited from DependencyObject)
SetValue(DependencyProperty, Object)	Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject)
UnregisterPropertyChangedCallback(DependencyProperty, Int64)	Cancels a change notification that was previously registered by calling RegisterPropertyChangedCallback. (Inherited from DependencyObject)

See also

• CacheMode
• IsOverdrawHeatMapEnabled
• Optimize your XAML markup