How to: Automatically Load Cartesian Data to a Geo Map

• Jun 07, 2019
• 3 minutes to read

To automatically load Cartesian map data from a shapefile onto a Geo map, do the following.

• If the shapefile data contains a *.PRJ file with the same name and path as the *.SHP file, specify the ShapefileDataAdapter.FileUri property. The data will be loaded automatically.
• Otherwise, to load coordinate system information if the file names or paths are different, use the ShapefileDataAdapter.LoadPrjFile method to initialize the SourceCoordinateSystem class descendant object, which should be assigned to the CoordinateSystemDataAdapterBase.SourceCoordinateSystem property of the data adapter.

MainWindow.xaml

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxm="http://schemas.devexpress.com/winfx/2008/xaml/map"
        xmlns:local="clr-namespace:LoadPrjData"
        xmlns:sys="clr-namespace:System;assembly=System"
        x:Class="LoadPrjData.MainWindow"
        Title="MainWindow" MinHeight="350" MinWidth="525" Loaded="Window_Loaded">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>


        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <Label Grid.Column="0"  Margin="4,4,2,4" Content="Coordinate System:"/>
            <ComboBox Grid.Column="1" Name="cbCoordinateSystem" HorizontalAlignment="Stretch"
                      Margin="2,4,4,4" SelectedIndex="0" ItemsSource="{Binding Data}">
                <ComboBox.ItemTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding Name}" Padding="4"/>
                    </DataTemplate>
                </ComboBox.ItemTemplate>
            </ComboBox>
            <Button Grid.Column="2" Content="Locate Vector Data" Margin="4" Padding="4" Click="Button_Click"></Button>
        </Grid>
        <dxm:MapControl Name="map"  Grid.Row="1">
            <dxm:ImageTilesLayer>
                <dxm:BingMapDataProvider Kind="Road" BingKey="YOUR BING KEY"/>
            </dxm:ImageTilesLayer>
            <dxm:VectorLayer ShapeFill="#60FF8800">
                <dxm:ShapefileDataAdapter 
                    FileUri="{Binding ElementName=cbCoordinateSystem, Path=SelectedValue.FileUri}"
                    SourceCoordinateSystem="{Binding ElementName=cbCoordinateSystem, Path=SelectedValue.CoordinateSystem}">
                </dxm:ShapefileDataAdapter>
            </dxm:VectorLayer>
        </dxm:MapControl>

    </Grid>
</Window>

MainWindow.xaml.vb

Imports System
Imports System.Collections.Generic
Imports System.Windows
Imports DevExpress.Xpf.Map

Namespace LoadPrjData
    Partial Public Class MainWindow
        Inherits Window


        Private data_Renamed As New List(Of MapData)()
        Public ReadOnly Property Data() As List(Of MapData)
            Get
                Return data_Renamed
            End Get
        End Property

        Public Sub New()
            InitializeComponent()
        End Sub

        Private Sub Window_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
            Dim baseUri As New Uri(System.Reflection.Assembly.GetEntryAssembly().Location)
'            #Region "#AutomaticallyLoaded"
            data_Renamed.Add(New MapData() With {.Name = "Automatically loaded data", .FileUri = New Uri(baseUri, "../../Shapefiles/Albers/switzerland.shp")})
'            #End Region ' #AutomaticallyLoaded
'            #Region "#LoadPrjFile"
            data_Renamed.Add(New MapData() With {.Name = "LoadPrjFile( ) loaded coordinate system", .FileUri = New Uri(baseUri, "../../Shapefiles/Lambert/Belize.shp"), .CoordinateSystem = ShapefileDataAdapter.LoadPrjFile(New Uri(baseUri, "../../Shapefiles/Lambert/Projection.prj"))})
'            #End Region ' #LoadPrjFile
'            #Region "#ManuallyCreated"
            data_Renamed.Add(New MapData() With { _
                .Name = "Manually created coordinate system", .FileUri = New Uri(baseUri, "../../Shapefiles/TransverseMercator/israel.shp"), .CoordinateSystem = New CartesianSourceCoordinateSystem() With { _
                    .CoordinateConverter = New UTMCartesianToGeoConverter() With {.Hemisphere = Hemisphere.Northern, .UtmZone = 36} _
                } _
            })
'            #End Region ' #ManuallyCreated

            Me.DataContext = Me
        End Sub

        Private Sub Button_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
            map.ZoomToFitLayerItems(0.4)
        End Sub
    End Class

    Public Class MapData
        Public Property Name() As String
        Public Property FileUri() As Uri
        Public Property CoordinateSystem() As SourceCoordinateSystem
    End Class
End Namespace

MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Windows;
using DevExpress.Xpf.Map;

namespace LoadPrjData {
    public partial class MainWindow : Window {
        List<MapData> data = new List<MapData>();
        public List<MapData> Data { get { return data; } }

        public MainWindow() {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e) {
            Uri baseUri = new Uri(System.Reflection.Assembly.GetEntryAssembly().Location);
            #region #AutomaticallyLoaded
            data.Add(new MapData() {
                Name = "Automatically loaded data",
                FileUri = new Uri(baseUri, "../../Shapefiles/Albers/switzerland.shp")
            });
            #endregion #AutomaticallyLoaded
            #region #LoadPrjFile
            data.Add(new MapData() {
                Name = "LoadPrjFile( ) loaded coordinate system",
                FileUri = new Uri(baseUri, "../../Shapefiles/Lambert/Belize.shp"),
                CoordinateSystem = ShapefileDataAdapter.LoadPrjFile(new Uri (
                    baseUri, "../../Shapefiles/Lambert/Projection.prj"))
            });
            #endregion #LoadPrjFile
            #region #ManuallyCreated
            data.Add(new MapData() {
                Name = "Manually created coordinate system",
                FileUri = new Uri(baseUri, "../../Shapefiles/TransverseMercator/israel.shp"),
                CoordinateSystem = new CartesianSourceCoordinateSystem() {
                    CoordinateConverter = new UTMCartesianToGeoConverter() {
                        Hemisphere = Hemisphere.Northern,
                        UtmZone = 36
                    }
                }
            });
            #endregion #ManuallyCreated

            this.DataContext = this;
        }

        private void Button_Click(object sender, RoutedEventArgs e) {
            map.ZoomToFitLayerItems(0.4);
        }
    }

    public class MapData {
        public string Name { get; set; }
        public Uri FileUri { get; set; }
        public SourceCoordinateSystem CoordinateSystem { get; set; }
    }
}