Class VirtualizationLayer

Information layer which allows virtualization of the information items depends on the geographical location and zoom factor. In contrast to the InformationLayer which process ALL items in collection this layer request items to process. It makes favor when thousands of items are available (pictures of POIs, for example). Customer application can select what pictures are suitable for given location and zoom factor and returns these ones only.

Inheritance
System.Object
ItemsControl
MapLayer
InformationLayer
VirtualizationLayer
Inherited Members
Namespace: Telerik.Windows.Controls.Map
Assembly: Telerik.Windows.Controls.DataVisualization.dll

Syntax

public class VirtualizationLayer : InformationLayer, ILayer

Constructors

VirtualizationLayer()

Initializes a new instance of the VirtualizationLayer class.

Declaration
public VirtualizationLayer()

Properties

RenderWhileMotion

Gets or sets value which indicates whether the layer should request and render items dynamically during panning and zooming.

Declaration
public bool RenderWhileMotion { get; set; }
Property Value
System.Boolean

VirtualizationSource

Gets or sets data provider for the virtualization layer.

Declaration
public IMapVirtualizationSource VirtualizationSource { get; set; }
Property Value
IMapVirtualizationSource

ZoomLevelGridList

Gets ZoomLevelGrid collection.

Declaration
public ZoomLevelGridCollection ZoomLevelGridList { get; }
Property Value
ZoomLevelGridCollection

Methods

OnMapChanged(RadMap, RadMap)

Is called when map control is changed for this map layer.

Declaration
protected override void OnMapChanged(RadMap oldMap, RadMap newMap)
Parameters
RadMap oldMap

Old map control.
RadMap newMap

New map control.
Overrides

Refresh()

Clears items from the layer and re-requests items for regions in current location and zoom.

Declaration
public void Refresh()

Extension Methods