SetSnapMode Method (Snapping)
Sets the state of a single SnapMode.
Configure Snapping - Application SnapModes
// set only Point and Edge snapping modes, clear everything else
//At 2.x - ArcGIS.Desktop.Mapping.Snapping.SetSnapModes(SnapMode.Point, SnapMode.Edge);
ArcGIS.Desktop.Mapping.Snapping.SetSnapModes(
new List<SnapMode>() { SnapMode.Point, SnapMode.Edge });
// clear all snap modes
//At 2.x - ArcGIS.Desktop.Mapping.Snapping.SetSnapModes();
ArcGIS.Desktop.Mapping.Snapping.SetSnapModes(null);
// set snap modes one at a time
ArcGIS.Desktop.Mapping.Snapping.SetSnapMode(SnapMode.Edge, true);
ArcGIS.Desktop.Mapping.Snapping.SetSnapMode(SnapMode.End, true);
ArcGIS.Desktop.Mapping.Snapping.SetSnapMode(SnapMode.Intersection, true);
// get current snap modes
var snapModes = ArcGIS.Desktop.Mapping.Snapping.SnapModes;
// get state of a specific snap mode
bool isOn = ArcGIS.Desktop.Mapping.Snapping.GetSnapMode(SnapMode.Vertex);
Configure Snapping - Combined Example
// interested in only snapping to the vertices of a specific layer of interest and not the vertices of other layers
// all other snapModes should be off.
// snapping must be on
ArcGIS.Desktop.Mapping.Snapping.IsEnabled = true;
// turn all application snapModes off
//At 2.x - ArcGIS.Desktop.Mapping.Snapping.SetSnapModes();
ArcGIS.Desktop.Mapping.Snapping.SetSnapModes(null);
// set application snapMode vertex on
ArcGIS.Desktop.Mapping.Snapping.SetSnapMode(SnapMode.Vertex, true);
// ensure layer snapping is on
await QueuedTask.Run(() =>
{
fLayer.SetSnappable(true);
});
// set vertex snapping only
var vertexOnly = new LayerSnapModes(false) { Vertex = true };
// set vertex only for the specific layer, clearing all others
var dict = new Dictionary<Layer, LayerSnapModes>();
dict.Add(fLayer, vertexOnly);
ArcGIS.Desktop.Mapping.Snapping.SetLayerSnapModes(dict, true); // true = reset other layers
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.