ComponentOne Maps for WPF and Silverlight
Request Method (IMapVirtualSource)

C1.WPF.Maps Namespace > IMapVirtualSource Interface : Request Method
The minimum zoom of the region.
The maximum zoom of the region.
The lower left coordinate of the region, in geographic coordinates.
The upper right coordinate of the region, in geographic coordinates.
A delegate to call with the elements inside the specified region.
Called from C1MapVirtualLayer when new items are needed for a map region.
Syntax
'Declaration
 
Sub Request( _
   ByVal minZoom As System.Double, _
   ByVal maxZoom As System.Double, _
   ByVal lowerLeft As System.Windows.Point, _
   ByVal upperRight As System.Windows.Point, _
   ByVal callback As System.Action(Of ICollection) _
) 
void Request( 
   System.double minZoom,
   System.double maxZoom,
   System.Windows.Point lowerLeft,
   System.Windows.Point upperRight,
   System.Action<ICollection> callback
)

Parameters

minZoom
The minimum zoom of the region.
maxZoom
The maximum zoom of the region.
lowerLeft
The lower left coordinate of the region, in geographic coordinates.
upperRight
The upper right coordinate of the region, in geographic coordinates.
callback
A delegate to call with the elements inside the specified region.
See Also

Reference

IMapVirtualSource Interface
IMapVirtualSource Members