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GeometryEngineProject Method (Geometry, SpatialReference)

Projects the given geometry into a new spatial reference.

Namespace:  Esri.ArcGISRuntime.Geometry
Assembly:  Esri.ArcGISRuntime (in Esri.ArcGISRuntime.dll) Version:
public static Geometry Project(
	Geometry geometry,
	SpatialReference outputSpatialReference


Type: Esri.ArcGISRuntime.GeometryGeometry
The geometry to be projected.
Type: Esri.ArcGISRuntime.GeometrySpatialReference
The spatial reference to which geometry need to be projected.

Return Value

Type: Geometry
The projected geometry.


Example Name: ShowCallout

Show a callout with the latitude and longitude of user-tapped points.

Code example screen shot.

// Copyright 2017 Esri.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
// language governing permissions and limitations under the License.

using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.UI;
using Esri.ArcGISRuntime.UI.Controls;

namespace ArcGISRuntime.WPF.Samples.ShowCallout
        "Show callout",
        "This sample illustrates how to show callouts on a map in response to user interaction.",
        "Tap on the map to show that point's coordinates.")]
    public partial class ShowCallout
        public ShowCallout()


        private void Initialize()
            // Create a new basemap using the streets base layer
            Basemap myBasemap = Basemap.CreateStreets();

            // Create a new map based on the streets basemap
            Map myMap = new Map(myBasemap);

            // Assign the map to the MapView
            MyMapView.Map = myMap;

            // Wire up the MapView GeoVewTapped event
            MyMapView.GeoViewTapped += MyMapView_GeoViewTapped;

        private void MyMapView_GeoViewTapped(object sender, GeoViewInputEventArgs e)
            // Get the user-tapped location
            MapPoint mapLocation = e.Location;

            // Project the user-tapped map point location to a geometry
            Geometry myGeometry = GeometryEngine.Project(mapLocation, SpatialReferences.Wgs84);

            // Convert to geometry to a traditional Lat/Long map point
            MapPoint projectedLocation = (MapPoint)myGeometry;

            // Format the display callout string based upon the projected map point (example: "Lat: 100.123, Long: 100.234")
            string mapLocationDescription = string.Format("Lat: {0:F3} Long:{1:F3}", projectedLocation.Y, projectedLocation.X);

            // Create a new callout definition using the formatted string
            CalloutDefinition myCalloutDefinition = new CalloutDefinition("Location:", mapLocationDescription);

            // Display the callout
            MyMapView.ShowCalloutAt(mapLocation, myCalloutDefinition);
        <esri:MapView x:Name="MyMapView" />
        <Border Style="{StaticResource BorderStyle}">
            <TextBlock Text="Tap to show a callout."
                       TextAlignment="Center" />
See Also
Additional Examples
Hyperlink to ExampleDescription
AuthorMapCreate and save a map as an ArcGIS `PortalItem` (i.e. web map).
BufferListGenerate multiple individual buffers or a single unioned buffer around multiple points.
GeodesicOperationsThis sample demonstrates how to perform geodesic operations on geometries using the GeometryEngine. Geodesic calculations take into account the curvature of the Earth, while planar calculations are based on a 2D Cartesian plane.
ProjectProject a point from one spatial reference to another.
ProjectWithSpecificTransformationThis sample demonstrates how to use the GeometryEngine with a specified geographic transformation to transform a geometry from one coordinate system to another.
SceneLayerSelectionIdentify GeoElements in a scene layer.
SceneLayerUrlDisplay an ArcGIS scene layer from a URL.
ShowCalloutShow a callout with the latitude and longitude of user-tapped points.