File GPS Layer Code

This sample demonstrates how to use the FileGpsCoordinateWatcher to playback NMEA sentences from a log file to show a location on a map using code.

XAML

<UserControl x:Class="ArcGISWPFSDK.FileGpsLayerCodebehind"
             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>
        <esri:Map x:Name="MyMap">
            <esri:ArcGISLocalTiledLayer ID="localTiledLayer" Path="..\Data\TPKs\Campus.tpk"/>
        </esri:Map>
    </Grid>
</UserControl>

C#

using System;
using System.Windows;
using System.Windows.Controls;
using ESRI.ArcGIS.Client.Toolkit.DataSources;
using ESRI.ArcGIS.Client.Local;

namespace ArcGISWPFSDK
{
    /// <summary>
    /// Interaction logic for FileGpsLayerCodebehind.xaml
    /// </summary>
    public partial class FileGpsLayerCodebehind : UserControl
    {
        GpsLayer _gpsLayer;
        public FileGpsLayerCodebehind()
        {
            InitializeComponent();

            Application.Current.Exit += new ExitEventHandler(Current_Exit);

            //Create and add new file based GPS layer
            _gpsLayer = new GpsLayer();
            _gpsLayer.GeoPositionWatcher = new ESRI.ArcGIS.Client.Local.Gps.FileGpsCoordinateWatcher()
                       {
                           Path = @"..\Data\GPS\campus.txt",
                           LoopPlayback = true
                       };
            MyMap.Layers.Add(_gpsLayer);
        }

        void Current_Exit(object sender, ExitEventArgs e)
        {
            //Cleanup GpsCoordinateWatcher resource
            IDisposable fileGpsWatcher = _gpsLayer.GeoPositionWatcher as IDisposable;
            if (fileGpsWatcher != null)
                fileGpsWatcher.Dispose();
        }
    }
}

VB.NET

Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Shapes
Imports ESRI.ArcGIS.Client.Toolkit.DataSources
Imports ESRI.ArcGIS.Client.Local

''' <summary>
''' Interaction logic for FileGpsLayerCodebehind.xaml
''' </summary>
Namespace ArcGISWPFSDK
    Partial Public Class FileGpsLayerCodebehind
        Inherits UserControl
        Private _gpsLayer As GpsLayer
        Public Sub New()
            InitializeComponent()

            AddHandler Application.Current.[Exit], New ExitEventHandler(AddressOf Current_Exit)

            'Create and add new file based GPS layer
            _gpsLayer = New GpsLayer()
            _gpsLayer.GeoPositionWatcher = New ESRI.ArcGIS.Client.Local.Gps.FileGpsCoordinateWatcher() With { _
             .Path = "..\Data\GPS\campus.txt", _
             .LoopPlayback = True _
            }
            MyMap.Layers.Add(_gpsLayer)
        End Sub

        Private Sub Current_Exit(sender As Object, e As ExitEventArgs)
            'Cleanup GeoPositionWatcher resource
            Dim fileGpsWatcher As IDisposable = TryCast(_gpsLayer.GeoPositionWatcher, IDisposable)
            If fileGpsWatcher IsNot Nothing Then
                fileGpsWatcher.Dispose()
            End If
        End Sub
    End Class
End Namespace