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LatitudeLongitudeFormat Enumeration

Supported formats for representing latitude-longitude geographical coordinates as a string.

Namespace:  Esri.ArcGISRuntime.Geometry
Assembly:  Esri.ArcGISRuntime (in Esri.ArcGISRuntime.dll) Version: 100.9.0
Syntax
public enum LatitudeLongitudeFormat
Members
  Member nameValueDescription
DecimalDegrees0The geographical coordinates are represented in decimal degrees.
DegreesDecimalMinutes1The geographical coordinates are represented in degrees and decimal minutes.
DegreesMinutesSeconds2The geographical coordinates are represented in degrees and minutes and decimal seconds.
Examples

WPF

Example Name: FormatCoordinates

Format coordinates in a variety of common notations.

Code example screen shot.

C#
// 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: http://www.apache.org/licenses/LICENSE-2.0
// 
// 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
{
    [ArcGISRuntime.Samples.Shared.Attributes.Sample(
        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()
        {
            InitializeComponent();

            Initialize();
        }

        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
            UpdateUIFromMapPoint(startingPoint);

            // 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)
        {
            try
            {
                // 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.
                    MyMapView.GraphicsOverlays[0].Graphics.Clear();
                }
                return;
            }

            // 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
            MyMapView.GraphicsOverlays[0].Graphics.Clear();

            // 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
            MyMapView.GraphicsOverlays[0].Graphics.Add(symbolGraphic);
        }

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

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

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

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

            // Update the UI from the MapPoint
            UpdateUIFromMapPoint(enteredPoint);
        }
    }
}
XAML
<UserControl x:Class="ArcGISRuntime.WPF.Samples.FormatCoordinates.FormatCoordinates"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013">
    <UserControl.Resources>
        <Style TargetType="TextBlock">
            <Setter Property="Margin" Value="0,5,5,0" />
        </Style>
        <Style TargetType="TextBox">
            <Setter Property="Margin" Value="0,5,0,0" />
        </Style>
    </UserControl.Resources>
    <Grid>
        <esri:MapView x:Name="MyMapView" />
        <Border Style="{StaticResource BorderStyle}">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <TextBlock
                    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"
                    Margin="0,0,0,0"
                    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"
                        Margin="0,5,0,0"
                        Click="RecalculateFields" />
            </Grid>
        </Border>
    </Grid>
</UserControl>
See Also
Additional Examples
Hyperlink to ExampleDescription
FormatCoordinatesFormat coordinates in a variety of common notations.