FeatureLayer Scale Settings in ArcGIS Silverlight API

Question

Is there a way to translating between resolution and scale in the ArcGIS Silverlight API?

I am dynamically adding a Feature Layer to my map which should have a Min Scale value of 10,000. The feature layer object has a setting for Minimum Resolution, but nothing for Scale values.

Does anyone know how I can set the Feature Layer to only show data below that scale?

• Kirk Kuykendall: Are you willing to assume a dpi for your display? What if someone is using a projector?
• Britt Wescott: Yes, I'd be willing to assume a DPI.

Answer 1

In your code-behind, you can get your Map's scale and resolution, and divide them to get the constant between them. Then, just set the minimum resolution for the FeatureLayer, based on that.

vb.net:

'assuming variable MyMap as ESRI.ArcGIS.Client.Map
Dim myFeatureLayer as New FeatureLayer() With { _
 ... 
 .MinimumResolution = 10000 * MyMap.Scale / MyMap.Resolution _
}

Answer 2

LayerInfo mfinfo = (map1.Layers["MFStock"] as ArcGISDynamicMapServiceLayer).Layers[1] as LayerInfo;
 mfinfo.MaxScale = 100000;