Format coordinates

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 // 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.Collections.Generic; using System.Drawing; using System.Windows; using System.Windows.Controls;  namespace ArcGIS.WPF.Samples.FormatCoordinates {  [ArcGIS.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 updated field.  private TextBox _selectedTextBox;   private List<TextBox> _textBoxes;   public FormatCoordinates()  {  InitializeComponent();  Initialize();  }   private void Initialize()  {  // Create a list of the text boxes.  _textBoxes = new List<TextBox> { UtmTextField, DmsTextField, DecimalDegreesTextField, UsngTextField };   // Create the map.  MyMapView.Map = new Map(BasemapStyle.ArcGISNavigation);   // Add the graphics overlay to the map.  MyMapView.GraphicsOverlays.Add(new GraphicsOverlay());   // Create the starting point.  var startingPoint = new MapPoint(0, 0, SpatialReferences.WebMercator);   // Update the UI with the initial point.  UpdateUIFromMapPoint(startingPoint);   // Subscribe to map tap events to enable tapping on map to update coordinates.  MyMapView.GeoViewTapped += (s, e) => { UpdateUIFromMapPoint(e.Location); };  }   private void InputTextChanged(object sender, TextChangedEventArgs e)  {  // Keep track of the last edited field.  _selectedTextBox = (TextBox)sender;  }   private void RecalculateFields(object sender, RoutedEventArgs e)  {  // Only update the point if the user has changed text.  if (_selectedTextBox == null) return;   // 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);  }   private void UpdateUIFromMapPoint(MapPoint selectedPoint)  {  try  {  // Check if the selected point can be formatted into coordinates.  CoordinateFormatter.ToLatitudeLongitude(selectedPoint, LatitudeLongitudeFormat.DecimalDegrees, 0);  }  catch (Exception ex)  {  MessageBox.Show(ex.Message, "Error");  return;  }   // "Deselect" any text box.  _selectedTextBox = null;   // Disable event handlers while updating text in text boxes.  _textBoxes.ForEach(box => box.TextChanged -= InputTextChanged);   // Update textbox values.  DecimalDegreesTextField.Text = CoordinateFormatter.ToLatitudeLongitude(selectedPoint, LatitudeLongitudeFormat.DecimalDegrees, 4);  DmsTextField.Text = CoordinateFormatter.ToLatitudeLongitude(selectedPoint, LatitudeLongitudeFormat.DegreesMinutesSeconds, 1);  UtmTextField.Text = CoordinateFormatter.ToUtm(selectedPoint, UtmConversionMode.NorthSouthIndicators, true);  UsngTextField.Text = CoordinateFormatter.ToUsng(selectedPoint, 4, true);   // Enable event handlers for all of the text boxes.  _textBoxes.ForEach(box => box.TextChanged += InputTextChanged);   // Clear existing graphics.  MyMapView.GraphicsOverlays[0].Graphics.Clear();   // Create a symbol to symbolize the point.  var symbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.X, Color.Yellow, 20);   // Create the graphic.  var symbolGraphic = new Graphic(selectedPoint, symbol);   // Add the graphic to the graphics overlay.  MyMapView.GraphicsOverlays[0].Graphics.Add(symbolGraphic);  }  } }