using System;  
 using System.Collections.Generic;  
 using System.Configuration;  
 using System.Data;  
 using System.Linq;  
 using System.Windows;  
 
 namespace SaveLoadState  
 {  
     /// <summary>  
     /// Interaction logic for App.xaml  
     /// </summary>  
     public partial class App : Application  
     {  
     }  
 }  
 

 using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Text;  
 using System.IO;  
 using System.Windows;  
 using System.Windows.Controls;  
 using System.Windows.Data;  
 using System.Windows.Documents;  
 using System.Windows.Input;  
 using System.Windows.Media;  
 using System.Windows.Media.Imaging;  
 using System.Windows.Shapes;  
 using System.Collections.ObjectModel;  
 using ThinkGeo.MapSuite.Core;  
 using ThinkGeo.MapSuite.WpfDesktopEdition;  
 
 namespace SaveLoadState  
 {  
     /// <summary>  
     /// Interaction logic for TestWindow.xaml  
     /// </summary>  
     public partial class TestWindow : Window  
     {  
         //private byte[] savedStates;  
 
         public TestWindow()  
         {  
             InitializeComponent();  
         }  
 
         private void Window_Loaded(object sender, RoutedEventArgs e)  
         {  
             //Sets the correct map unit and the extent of the map.  
             wpfMap1.MapUnit = GeographyUnit.DecimalDegree;  
             wpfMap1.CurrentExtent = new RectangleShape(-128,51,-65,19);  
             wpfMap1.Background = new SolidColorBrush(Color.FromRgb(148, 196, 243));  
 
             WorldMapKitWmsWpfOverlay worldMapKitDesktopOverlay = new WorldMapKitWmsWpfOverlay();  
             wpfMap1.Overlays.Add(worldMapKitDesktopOverlay);  
 
             //SimpleMarkerOverlay for points.  
             SimpleMarkerOverlay simpleMarkerOverlay = new SimpleMarkerOverlay();  
             simpleMarkerOverlay.DragMode = MarkerDragMode.Drag;  
 
             wpfMap1.Overlays.Add("SimpleMarkerOverlay", simpleMarkerOverlay);  
 
             wpfMap1.Refresh();  
 
             btnSave.IsEnabled = false;  
         }  
 
         private void btnLoad_Click(object sender, RoutedEventArgs e)  
         {  
                //Loads the SimpleMakerOverlay from file  
                SimpleMarkerOverlay simpleMarkerOverlay = (SimpleMarkerOverlay)wpfMap1.Overlays["SimpleMarkerOverlay"];  
 
                //Gets the byte array from file to load the SimpleMarkerOverlay  
                Byte[] savedStates = ByteArrayFromFile(@"..\..\data\points.dat");  
                simpleMarkerOverlay.LoadState(savedStates);  
 
                simpleMarkerOverlay.Refresh();  
 
                btnSave.IsEnabled = true;  
         }  
 
         private void btnSave_Click(object sender, RoutedEventArgs e)  
         {  
             SimpleMarkerOverlay simpleMarkerOverlay = (SimpleMarkerOverlay)wpfMap1.Overlays["SimpleMarkerOverlay"];  
 
             //Gets the byte array of SimpleMarkerOverlay to save to file.  
             Byte[] savedStates = simpleMarkerOverlay.SaveState();  
             ByteArrayToFile(@"..\..\data\points.dat", savedStates);  
 
         }  
 
         public void ByteArrayToFile(string fileName, byte[] byteArray)  
         {  
            FileStream fileStream = new FileStream(fileName, FileMode.Create, FileAccess.Write);  
            fileStream.Write(byteArray, 0, byteArray.Length);  
            fileStream.Close();  
         }  
 
         public byte[] ByteArrayFromFile(string fileName)  
         {  
             byte[] byteArray = null;  
             FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);  
             BinaryReader binaryReader = new BinaryReader(fileStream);  
             long numBytes = new FileInfo(fileName).Length;  
             byteArray = binaryReader.ReadBytes((int)numBytes);  
             return byteArray;  
         }  
 
 
         private void wpfMap1_MouseMove(object sender, MouseEventArgs e)  
         {  
             //Gets the PointShape in world coordinates from screen coordinates.  
             Point point = e.MouseDevice.GetPosition(null);  
 
             ScreenPointF screenPointF = new ScreenPointF((float)point.X, (float)point.Y);  
             PointShape pointShape = ExtentHelper.ToWorldCoordinate(wpfMap1.CurrentExtent, screenPointF, (float)wpfMap1.Width, (float)wpfMap1.Height);  
 
             textBox1.Text = "X: " + DecimalDegreesHelper.GetDegreesMinutesSecondsStringFromDecimalDegree(pointShape.X) +  
                           "  Y: " + DecimalDegreesHelper.GetDegreesMinutesSecondsStringFromDecimalDegree(pointShape.Y);  
 
          }  
      }  
 }