Project

This sample demonstrates using the ArcGIS Runtime SDK for WPF to perform a geometry operation that takes an input graphic point that was created using decimal degrees and projects the return graphic point to Web Mercator.

To use the sample, enter an X and Y coordinate value in decimal degrees (WGS84) and click Project to transform the coordinate to Web Mercator and add it to the map.

XAML

<UserControl x:Class="ArcGISWPFSDK.LocalProject"
    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/client/2009">
    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.Resources>
            <esri:SimpleMarkerSymbol x:Key="RoundMarkerSymbol" Size="10">
                <esri:SimpleMarkerSymbol.Color>
                    <RadialGradientBrush>
                        <GradientStop Color="Yellow" Offset="0.578"/>
                        <GradientStop Color="#FF0E0D07" Offset="1"/>
                    </RadialGradientBrush>
                </esri:SimpleMarkerSymbol.Color>
            </esri:SimpleMarkerSymbol>
            <LinearGradientBrush x:Key="PanelGradient" EndPoint="0.5,1" StartPoint="0.5,0">
                <LinearGradientBrush.RelativeTransform>
                    <TransformGroup>
                        <ScaleTransform CenterY="0.5" CenterX="0.5"/>
                        <SkewTransform CenterY="0.5" CenterX="0.5"/>
                        <RotateTransform Angle="176" CenterY="0.5" CenterX="0.5"/>
                        <TranslateTransform/>
                    </TransformGroup>
                </LinearGradientBrush.RelativeTransform>
                <GradientStop Color="#FF145787" Offset="0.16"/>
                <GradientStop Color="#FF3D7FAC" Offset="0.502"/>
                <GradientStop Color="#FF88C5EF" Offset="0.984"/>
            </LinearGradientBrush>
        </Grid.Resources>
        <esri:Map x:Name="MyMap" Extent="-15000000,2000000,-7000000,8000000" Background="#FFE3E3E3" >
            <esri:ArcGISLocalTiledLayer ID="BaseMap" Path="..\\Data\\TPKs\\Topographic.tpk"/>
            <esri:GraphicsLayer ID="ProjectGraphicsLayer" x:Name="_ProjectGraphicsLayer" >
                <esri:GraphicsLayer.MapTip>
                    <Border CornerRadius="10" BorderBrush="#FF222957" BorderThickness="3" Margin="0,0,15,15">
                        <Border.Background>
                            <LinearGradientBrush EndPoint="1.038,1.136" StartPoint="0.015,0.188">
                                <GradientStop Color="#FFD1DFF2"/>
                                <GradientStop Color="#FF0088FF" Offset="0.946"/>
                            </LinearGradientBrush>
                        </Border.Background>
                        <Border.Effect>
                            <DropShadowEffect ShadowDepth="10" BlurRadius="14" Direction="300" />
                        </Border.Effect>
                        <StackPanel Orientation="Vertical" HorizontalAlignment="Center" Margin="10">
                            <TextBlock Text="Input coordinate: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center"/>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="X: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center"/>
                                <TextBlock Text="{Binding [Input_CoordinateX]}" HorizontalAlignment="Left" VerticalAlignment="Center" />
                            </StackPanel>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="Y: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center"/>
                                <TextBlock Text="{Binding [Input_CoordinateY]}" HorizontalAlignment="Left" VerticalAlignment="Center" />
                            </StackPanel>

                            <TextBlock Text="Output coordinate: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center" />
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="X: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center"/>
                                <TextBlock Text="{Binding [Output_CoordinateX]}" HorizontalAlignment="Left" VerticalAlignment="Center" />
                            </StackPanel>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="Y: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center" />
                                <TextBlock Text="{Binding [Output_CoordinateY]}" HorizontalAlignment="Left" VerticalAlignment="Center" />
                            </StackPanel>
                        </StackPanel>
                    </Border>
                </esri:GraphicsLayer.MapTip>
            </esri:GraphicsLayer>
        </esri:Map>

        <Grid HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,10,10,0" >
            <Rectangle Fill="{StaticResource PanelGradient}" Stroke="Gray"  RadiusX="10" RadiusY="10" Margin="0,0,0,5" >
                <Rectangle.Effect>
                    <DropShadowEffect/>
                </Rectangle.Effect>
            </Rectangle>
            <Rectangle Fill="#FFFFFFFF" Stroke="DarkGray" RadiusX="5" RadiusY="5" Margin="10,10,10,15" />
            <StackPanel Orientation="Vertical" Margin="30,20,20,30" >
                <TextBlock x:Name="ResponseTextBlock" Text="Enter an X and Y coordinate value in decimal degrees (WGS84) and click Project to transform the coordinate to Web Mercator and add it to the map." 
                           Width="200" TextAlignment="Left"  TextWrapping="Wrap" Margin="0,0,0,5" Foreground="Black"/>
                <StackPanel Orientation="Vertical">
                    <StackPanel Orientation="Horizontal" Margin="3">
                        <TextBlock Text="X:" VerticalAlignment="Center" Margin="3" Foreground="Black" />
                        <TextBox x:Name="XTextBox" Text="-121"/>
                    </StackPanel>
                    <StackPanel Orientation="Horizontal" Margin="3">
                        <TextBlock Text="Y:" Margin="3" VerticalAlignment="Center" Foreground="Black" />
                        <TextBox x:Name="YTextBox"  Text="40" />
                    </StackPanel>
                </StackPanel>
                <Button Content="Project" Margin="0,5,5,0" Click="ProjectButton_Click"  />
            </StackPanel>
        </Grid>

    </Grid>
</UserControl>

C#

using System.Windows.Controls;
using System.Windows;
using ESRI.ArcGIS.Client.Geometry;
using ESRI.ArcGIS.Client.Tasks;
using ESRI.ArcGIS.Client;
using System.Collections.Generic;
using ESRI.ArcGIS.Client.Symbols;
using ESRI.ArcGIS.Client.Local;

namespace ArcGISWPFSDK
{
    public partial class LocalProject : UserControl
    {
        GeometryService _geometryTask;

        public LocalProject()
        {
            InitializeComponent();
  
            LocalGeometryService.GetServiceAsync(lgs =>
            {
                _geometryTask = new GeometryService();
                _geometryTask.Url = lgs.UrlGeometryService;
                _geometryTask.ProjectCompleted += geometryService_ProjectCompleted;
                _geometryTask.Failed += geometryService_Failed;

            });
        }

        private void ProjectButton_Click(object sender, System.Windows.RoutedEventArgs e)
        {
            double x;
            double y;
            if (!double.TryParse(XTextBox.Text, out x) || !double.TryParse(YTextBox.Text, out y))
            {
                MessageBox.Show("Enter valid coordinate values.");
                return;
            }

            MapPoint inputMapPoint = new MapPoint(x, y, new SpatialReference(4326));

            _geometryTask.ProjectAsync(new List<Graphic>() { new Graphic() { Geometry = inputMapPoint } }, MyMap.SpatialReference, inputMapPoint);
        }

        void geometryService_ProjectCompleted(object sender, GraphicsEventArgs e)
        {
            Graphic resultGraphic = e.Results[0];

            if (resultGraphic.Geometry.Extent != null)
            {
                resultGraphic.Symbol = LayoutRoot.Resources["RoundMarkerSymbol"] as SimpleMarkerSymbol;

                MapPoint resultMapPoint = resultGraphic.Geometry as MapPoint;
                resultGraphic.Attributes.Add("Output_CoordinateX", resultMapPoint.X);
                resultGraphic.Attributes.Add("Output_CoordinateY", resultMapPoint.Y);

                MapPoint inputMapPoint = e.UserState as MapPoint;
                resultGraphic.Attributes.Add("Input_CoordinateX", inputMapPoint.X);
                resultGraphic.Attributes.Add("Input_CoordinateY", inputMapPoint.Y);

                _ProjectGraphicsLayer.Graphics.Add(resultGraphic);

                MyMap.PanTo(resultGraphic.Geometry);
            }
            else
            {
                MessageBox.Show("Invalid input coordinate, unable to project.");
            }
        }

        void geometryService_Failed(object sender, TaskFailedEventArgs e)
        {
            MessageBox.Show("Geometry Service error: " + e.Error);
        }
    }
}

VB.NET

Imports System.Windows.Controls
Imports System.Windows
Imports ESRI.ArcGIS.Client.Geometry
Imports ESRI.ArcGIS.Client.Tasks
Imports ESRI.ArcGIS.Client
Imports System.Collections.Generic
Imports ESRI.ArcGIS.Client.Symbols
Imports ESRI.ArcGIS.Client.Local

Namespace ArcGISWPFSDK
    Partial Public Class LocalProject
        Inherits UserControl
        Private graphicsLayer As GraphicsLayer
        Private _geometryService As GeometryService

        Public Sub New()
            InitializeComponent()

            Dim localGeometryService As New LocalGeometryService()
            AddHandler localGeometryService.StartCompleted, Function(sender, eventargs)
                                                                Dim lgs As LocalGeometryService = TryCast(sender, LocalGeometryService)
                                                                _geometryService = New GeometryService()
                                                                _geometryService.Url = lgs.UrlGeometryService
                                                                AddHandler _geometryService.ProjectCompleted, AddressOf geometryService_ProjectCompleted

                                                                AddHandler _geometryService.Failed, AddressOf geometryService_Failed

                                                            End Function
            localGeometryService.StartAsync()

            graphicsLayer = TryCast(MyMap.Layers("MyGraphicsLayer"), GraphicsLayer)
        End Sub

        Private Sub ProjectButton_Click(sender As Object, e As System.Windows.RoutedEventArgs)
            Dim x As Double
            Dim y As Double
            If Not Double.TryParse(XTextBox.Text, x) OrElse Not Double.TryParse(YTextBox.Text, y) Then
                MessageBox.Show("Enter valid coordinate values.")
                Return
            End If

            Dim inputMapPoint As New MapPoint(x, y, New SpatialReference(4326))

            _geometryService.ProjectAsync(New List(Of Graphic)() From { _
             New Graphic() With { _
              .Geometry = inputMapPoint _
             } _
            }, MyMap.SpatialReference, inputMapPoint)
        End Sub

        Private Sub geometryService_ProjectCompleted(sender As Object, e As GraphicsEventArgs)
            Dim resultGraphic As Graphic = e.Results(0)

            If resultGraphic.Geometry.Extent IsNot Nothing Then
                resultGraphic.Symbol = TryCast(LayoutRoot.Resources("RoundMarkerSymbol"), SimpleMarkerSymbol)

                Dim resultMapPoint As MapPoint = TryCast(resultGraphic.Geometry, MapPoint)
                resultGraphic.Attributes.Add("Output_CoordinateX", resultMapPoint.X)
                resultGraphic.Attributes.Add("Output_CoordinateY", resultMapPoint.Y)

                Dim inputMapPoint As MapPoint = TryCast(e.UserState, MapPoint)
                resultGraphic.Attributes.Add("Input_CoordinateX", inputMapPoint.X)
                resultGraphic.Attributes.Add("Input_CoordinateY", inputMapPoint.Y)

                graphicsLayer.Graphics.Add(resultGraphic)

                MyMap.PanTo(resultGraphic.Geometry)
            Else
                MessageBox.Show("Invalid input coordinate, unable to project.")
            End If
        End Sub

        Private Sub geometryService_Failed(sender As Object, e As TaskFailedEventArgs)
            MessageBox.Show("Geometry Service error: " & Convert.ToString(e.[Error]))
        End Sub
    End Class
End Namespace