How to Add zoomrange and style to Polylinedata dynamically

[Sanjay]

Hi There

1. With InformationLayer Map Shape, MapPolyLine i was able to set zoom range value and style dynamically, like code below, looking for equivalent code for PolyLineData.

This works;

MapPolyline polylinedata = new MapPolyline()
            polylinedata.SetValue(MapLayer.ZoomRangeProperty, new ZoomRange(2, 9));
            polylinedata.SetValue(MapLayer.BaseZoomLevelProperty, 5);
            polylinedata.SetValue(MapLayer.MaxScaleProperty, 5);
            polyline.Style = this.Resources["selectedPolyLineStyle"] as Style;

Code below doesn't work;

PolylineData polylinedata = new PolylineData();
           polylinedata.SetValue(MapLayer.ZoomRangeProperty, new ZoomRange(2, 9));
           polylinedata.SetValue(MapLayer.BaseZoomLevelProperty, 5);
           polylinedata.SetValue(MapLayer.MaxScaleProperty, 5);
           polyline.Style = this.Resources["selectedPolyLineStyle"] as Style;

2. I have some 3K PolylineData framework elements which I'm creating dynamically live above , adding each of them to VirtualizationLayer in loop.This is quick but the because of 3K pPolylineData the Zoom and Panning performance is degraded.Kindly suggest the right approach.

Thanks in Anticipation

Thanks in Anticipation

[Petar Mladenov]

Hello Sanjay,

Let me go straight to your questions.

1) In Visualization Layer, you can use these "MapLayer properties" on FrameworkElements - Ellipse, Rectangle Polyline, etc. Just like it is shown in the Visualization Layer Introduction help article. Also, you can set up these properties on elements in databinding scenarios - please have a look at this article.
However, Map Shape data objects (LineData, PolylineData, RectangleData, etc) are not dependency objects and the MapLayer proeprties cannot apply on them. You will need to use code behind and events for such behaviors like zoomrange.

2) As discussed in other ticket with you, you have to set up a VirtualizationSource for better performance.

Regards,
Petar Mladenov
Telerik