protected async void SetSnapping()
{
var myMap = MapView.Active.Map;
//using ArcGIS.Desktop.Mapping
//enable snapping
Snapping.IsEnabled = true;
//enable a snap mode, others are not changed.
Snapping.SetSnapMode(SnapMode.Point, true);
//set multiple snap modes exclusively. All others will be disabled.
Snapping.SetSnapModes(SnapMode.Edge, SnapMode.Point);
await QueuedTask.Run(() =>
{
//set snapping options via get/set options
var snapOptions = Snapping.GetOptions(myMap);
snapOptions.SnapToSketchEnabled = true;
snapOptions.XYTolerance = 100;
Snapping.SetOptions(myMap, snapOptions);
});
var myFeatureLayer = MapView.Active.GetSelectedLayers().First() as FeatureLayer;
//read snapping availability for a layer
var canSnap = myFeatureLayer.IsSnappable;
//set snapping availability for a layer
var featLayerDef = myFeatureLayer.GetDefinition() as ArcGIS.Core.CIM.CIMGeoFeatureLayerBase;
featLayerDef.Snappable = true;
myFeatureLayer.SetDefinition(featLayerDef);
}