How to obtain latitude and longitude coordinates on mouse click ?

Question

I write code in C# and am currently using the ArcGis Runtime services for UWP. I am trying to obtain the geoposition information from a mouseclick event in my Map control. This is my first time working with the Map SDK and I could use some direction.

ThadTilton · Answer

Hey Kevin - One way to do this is to handle the GeoView.GeoViewTapped event to get a map location, then project the point (if necessary) to get the geographic coordinates (longitude and latitude). Here's an example: mapView.GeoViewTapped += (s, e) => { double latitude; double longitude; // Get the point clicked (it will be in the map's coordinate system, which may not be geographic). MapPoint mapPointRaw = e.Location; if(mapPointRaw.SpatialReference != SpatialReferences.Wgs84) { // Project the click point to geographic coordinates. MapPoint mapPointLatLong = GeometryEngine.Project(mapPointRaw, SpatialReferences.Wgs84) as MapPoint; longitude = mapPointLatLong.X; latitude = mapPointLatLong.Y; } else { // No need to project, point is already in geographic coordinates. longitude = mapPointRaw.X; latitude = mapPointRaw.Y; } };‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ You can also use the MapView.SketchEditor to get geometry from the user (not just points, but also lines or polygons, etc). You can make a call like this from a button click event to get a map point. Like the previous example, this point will be in the spatial reference (coordinate system) of the map. You may need to project it to get latitude/longitude coordinates. MapPoint mapPointRaw = await mapView.SketchEditor.StartAsync(SketchCreationMode.Point) as MapPoint;‍‍ Hope that helps! Thad PS - here's a sample that illustrates providing tools for the user to sketch geometry on the map that you might find useful: Sketch graphics on the map—ArcGIS Runtime SDK for .NET Samples | ArcGIS for Developers