How to retrieve Min and Max Scale of Feature Layer?

roufbaba

Hi,

How can I retrieve min and max scales for a Feature Layer which has been set in the MXD? As far sa LayerInfo is concerned, it includes Min and Max Resolution but those values doesn't match with the values defined in the MXD. It always returns 0 and Infinity respectively.


Thanks and Best Regards
Rouf

DominiqueBroux

Unfortunately the scale information is not available when you consume a feature server layer.

The workarounds could be:
- To query and deserialize the json response by yourself
or
- to create a temporarly ArcGISDynamicMapServiceLayer useful only to retrieve this info.
In this case, you don't need to add it to your map, you can instantiate it and call Initialize:

  var arcGISDynamicMapServiceLayer = new ArcGISDynamicMapServiceLayer
                          {
                    Url = myMapServiceUrl
                           };
  arcGISDynamicMapServiceLayer.Initialized += Layer_Initialized;
  arcGISDynamicMapServiceLayer.Initialize();
}
 
void Layer_Initialized(object sender, System.EventArgs e)
{
    var layer = sender as ArcGISDynamicMapServiceLayer;
    // Maxscale and Minscale are available here in layer.Layers[index] 
}