How to set layer visibility in arcgis API for WPF?

AnatoliiTerentiev

Dear Gurus!

I have next xaml:

        <esri:Map x:Name="Map" >
            <esri:ArcGISDynamicMapServiceLayer ID="BaseLayer" 
                Url="http://localhost:6080/ArcGIS/rest/services/streetRK/MapServer" />
        </esri:Map>

On the Map I have some point layer, which is not visible at start program. Two questions.

1. How I  can  set it visible in code behind? This code not help:

Map.Layers[0].Visible = true;

2, In FindTask_ExecuteCompleted I get feature which I want set selected. How I can do this? This code does not work:

                foreach (FindResult result in args.FindResults)
                 {
                         result.Feature.Selected = true;
                 }

3. How I can refresh Map layers?

Thanks in advance!

DominiqueBroux

Yes that's an option but you might not need the find task.

Once you created the feature layer, the features are loaded at client side and you could loop on features (featureLayer.Graphics) and select the features that fit with your criteria.

Another option might be you to create a graphicsLayer instead of a FeatureLayer and to populate the graphicsLayer with the result of the FindTask. There is a sample here: ArcGIS API for Silverlight - Interactive Samples | ArcGIS for Developers