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UtmConversionMode Enumeration

Determines how latitude is designated in UTM notation.

Namespace:  Esri.ArcGISRuntime.Geometry
Assembly:  Esri.ArcGISRuntime (in Esri.ArcGISRuntime.dll) Version: 100.9.0
public enum UtmConversionMode
  Member nameValueDescription
LatitudeBandIndicators0The letter after the UTM zone number represents a latitudinal band (C through X, omitting I and O).
NorthSouthIndicators1The letter after the UTM zone number represents a hemisphere (N or S).
Within a single longitudinal zone within the UTM system, two points share the same grid position: one in the northern hemisphere and one in the south. Two schemes are used to resolve this ambiguity. In the first, the point is designated a latitude band, identified with letters C through X (omitting I and O). In the second, in place of the latitude band, a hemisphere indicator (N or S) is used.


Example Name: FormatCoordinates

Format coordinates in a variety of common notations.

Code example screen shot.

// Copyright 2018 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.Symbology;
using Esri.ArcGISRuntime.UI;
using System;
using System.Drawing;
using System.Windows;
using System.Windows.Controls;

namespace ArcGISRuntime.WPF.Samples.FormatCoordinates
        name: "Format coordinates",
        category: "Geometry",
        description: "Format coordinates in a variety of common notations.",
        instructions: "Click on the map to see a callout with the clicked location's coordinate formatted in 4 different ways. You can also put a coordinate string in any of these formats in the text field. Hit Enter and the coordinate string will be parsed to a map location which the callout will move to.",
        tags: new[] { "USNG", "UTM", "convert", "coordinate", "decimal degrees", "degree minutes seconds", "format", "latitude", "longitude" })]
    public partial class FormatCoordinates
        // Hold a reference to the most recently selected text
        private TextBox _selectedTextBox;

        public FormatCoordinates()


        private void Initialize()
            // Initialize the selection
            _selectedTextBox = DecimalDegreesTextField;

            // Create the map
            MyMapView.Map = new Map(Basemap.CreateNavigationVector());

            // Add the graphics overlay to the map
            MyMapView.GraphicsOverlays.Add(new GraphicsOverlay());

            // Create the starting point
            MapPoint startingPoint = new MapPoint(0, 0, SpatialReferences.WebMercator);

            // Update the UI with the initial point

            // Subscribe to text change events
            UtmTextField.TextChanged += InputTextChanged;
            DmsTextField.TextChanged += InputTextChanged;
            DecimalDegreesTextField.TextChanged += InputTextChanged;
            UsngTextField.TextChanged += InputTextChanged;

            // Subscribe to map tap events to enable tapping on map to update coordinates
            MyMapView.GeoViewTapped += (sender, args) => { UpdateUIFromMapPoint(args.Location); };

        private void InputTextChanged(object sender, TextChangedEventArgs e)
            // Keep track of the last edited field
            _selectedTextBox = (TextBox)sender;

        private void UpdateUIFromMapPoint(MapPoint selectedPoint)
                // Check if the selected point can be formatted into coordinates.
                CoordinateFormatter.ToLatitudeLongitude(selectedPoint, LatitudeLongitudeFormat.DecimalDegrees, 0);
            catch (Exception e)
                // Check if the excpetion is because the coordinates are out of range.
                if (e.Message == "Invalid argument: coordinates are out of range")
                    // Set all of the text fields to contain the error message.
                    DecimalDegreesTextField.Text = "Coordinates are out of range";
                    DmsTextField.Text = "Coordinates are out of range";
                    UtmTextField.Text = "Coordinates are out of range";
                    UsngTextField.Text = "Coordinates are out of range";

                    // Clear the selectionss symbol.

            // Update the decimal degrees text
            DecimalDegreesTextField.Text = CoordinateFormatter.ToLatitudeLongitude(selectedPoint, LatitudeLongitudeFormat.DecimalDegrees, 4);

            // Update the degrees, minutes, seconds text
            DmsTextField.Text = CoordinateFormatter.ToLatitudeLongitude(selectedPoint, LatitudeLongitudeFormat.DegreesMinutesSeconds, 1);

            // Update the UTM text
            UtmTextField.Text = CoordinateFormatter.ToUtm(selectedPoint, UtmConversionMode.NorthSouthIndicators, true);

            // Update the USNG text
            UsngTextField.Text = CoordinateFormatter.ToUsng(selectedPoint, 4, true);

            // Clear existing graphics overlays

            // Create a symbol to symbolize the point
            SimpleMarkerSymbol symbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.X, Color.Yellow, 20);

            // Create the graphic
            Graphic symbolGraphic = new Graphic(selectedPoint, symbol);

            // Add the graphic to the graphics overlay

        private void RecalculateFields(object sender, RoutedEventArgs e)
            // Hold the entered point
            MapPoint enteredPoint = null;

            // Update the point based on which text sent the event
                switch (_selectedTextBox.Tag.ToString())
                    case "Decimal Degrees":
                    case "Degrees, Minutes, Seconds":
                        enteredPoint =
                            CoordinateFormatter.FromLatitudeLongitude(_selectedTextBox.Text, MyMapView.SpatialReference);

                    case "UTM":
                        enteredPoint =
                            CoordinateFormatter.FromUtm(_selectedTextBox.Text, MyMapView.SpatialReference, UtmConversionMode.NorthSouthIndicators);

                    case "USNG":
                        enteredPoint =
                            CoordinateFormatter.FromUsng(_selectedTextBox.Text, MyMapView.SpatialReference);
            catch (Exception ex)
                // The coordinate is malformed, warn and return
                MessageBox.Show(ex.Message, "Invalid format");

            // Update the UI from the MapPoint
<UserControl x:Class="ArcGISRuntime.WPF.Samples.FormatCoordinates.FormatCoordinates"
        <Style TargetType="TextBlock">
            <Setter Property="Margin" Value="0,5,5,0" />
        <Style TargetType="TextBox">
            <Setter Property="Margin" Value="0,5,0,0" />
        <esri:MapView x:Name="MyMapView" />
        <Border Style="{StaticResource BorderStyle}">
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="*" />
                    Text="Tap on the map to see the coordinates in each format. Update any value and select 'Recalculate' to see the updated coordinates."
                    Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2"
                    TextWrapping="Wrap" FontWeight="SemiBold" />
                <TextBlock Text="Decimal Degrees"
                           Grid.Row="1" Grid.Column="0"
                           HorizontalAlignment="Right" />
                <TextBox x:Name="DecimalDegreesTextField"
                         Grid.Row="1" Grid.Column="1"
                         Tag="Decimal Degrees" />
                <TextBlock Text="Degrees, Minutes, Seconds"
                           Grid.Row="2" Grid.Column="0"
                           HorizontalAlignment="Right" />
                <TextBox x:Name="DmsTextField"
                         Grid.Row="2" Grid.Column="1"
                         Tag="Degrees, Minutes, Seconds" />
                <TextBlock Text="UTM"
                           Grid.Row="3" Grid.Column="0"
                           HorizontalAlignment="Right" />
                <TextBox x:Name="UtmTextField"
                         Grid.Row="3" Grid.Column="1"
                         Tag="UTM" />
                <TextBlock Text="USNG"
                           Grid.Row="4" Grid.Column="0"
                           HorizontalAlignment="Right" />
                <TextBox x:Name="UsngTextField"
                         Grid.Row="4" Grid.Column="1"
                         Tag="USNG" />
                <Button Content="Recalculate"
                        Grid.Row="5" Grid.Column="0" Grid.ColumnSpan="2"
                        Click="RecalculateFields" />
See Also
Additional Examples
Hyperlink to ExampleDescription
FormatCoordinatesFormat coordinates in a variety of common notations.