====== Source Code DesktopEditionSample ShapefileEncryption CS 100417.zip ======


====Program.cs====

<code csharp> using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Windows.Forms;  
  
 namespace ShapefileEncryption  
 {  
     static class Program  
     {  
         /// <summary>  
         /// The main entry point for the application.  
         /// </summary>  
         [STAThread]  
         static void Main()  
         {  
             Application.EnableVisualStyles();  
             Application.SetCompatibleTextRenderingDefault(false);  
             Application.Run(new TestForm());  
         }  
     }  
 }  
 </code>



====TestForm.cs====

<code csharp> using System;  
 using System.Windows.Forms;  
 using System.Collections.ObjectModel;  
 using System.IO;  
 using ThinkGeo.MapSuite.Core;  
 using ThinkGeo.MapSuite.DesktopEdition;  
  
  
 namespace  ShapefileEncryption  
 {  
     public partial class TestForm : Form  
     {  
         public TestForm()  
         {  
             InitializeComponent();  
         }  
  
         private void TestForm_Load(object sender, EventArgs e)  
         {  
             // encrypt each file  
             EncryptFile(@"..\..\Data\USStates.shp", @"..\..\Data\encrypted.shp");  
             EncryptFile(@"..\..\Data\USStates.shx", @"..\..\Data\encrypted.shx");  
             EncryptFile(@"..\..\Data\USStates.dbf", @"..\..\Data\encrypted.dbf");  
             EncryptFile(@"..\..\Data\USStates.idx", @"..\..\Data\encrypted.idx");  
             EncryptFile(@"..\..\Data\USStates.ids", @"..\..\Data\encrypted.ids");  
         }  
  
         private void btnLoad_Click(object sender, EventArgs e)  
         {  
             winformsMap1.MapUnit = GeographyUnit.DecimalDegree;  
             winformsMap1.CurrentExtent = new RectangleShape(-180, 90, 180, -90);  
  
             ShapeFileFeatureLayer countryLayer = new ShapeFileFeatureLayer(@"encrypted.shp");  
             ((ShapeFileFeatureSource)countryLayer.FeatureSource).StreamLoading += new EventHandler<StreamLoadingEventArgs>(MainForm_StreamLoading);  
             countryLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
             countryLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country1;  
  
             LayerOverlay testOverlay = new LayerOverlay();  
             testOverlay.Layers.Add("CountryLayer", countryLayer);  
             winformsMap1.Overlays.Add("testOverlay", testOverlay);  
  
             winformsMap1.Refresh();  
         }  
  
         // The encryption is just a sample (simply adds 1 on each byte)  
         private void EncryptFile(string sourceFileName, string encryptedFileName)  
         {  
             Stream stream = File.Open(sourceFileName, FileMode.Open);  
             byte[] bytes = new byte[stream.Length];  
             stream.Read(bytes, 0, bytes.Length);  
  
             for (int i = 0; i < bytes.Length; i++)  
             {  
                 bytes[i] = (byte)(bytes[i] - 1);  
             }  
  
             if (File.Exists(encryptedFileName)) File.Delete(encryptedFileName);  
  
             Stream encryptedStream = File.Create(encryptedFileName);  
             encryptedStream.Write(bytes, 0, bytes.Length);  
             encryptedStream.Close();  
         }  
  
         // This is the Decrypt method  
         private Stream DecryptFile(string encryptedFileName)  
         {  
             Stream stream = File.Open(encryptedFileName, FileMode.Open);  
             byte[] bytes = new byte[stream.Length];  
             stream.Read(bytes, 0, bytes.Length);  
  
             for (int i = 0; i < bytes.Length; i++)  
             {  
                 bytes[i] = (byte)(bytes[i] + 1);  
             }  
  
             return new MemoryStream(bytes);  
         }  
  
         void MainForm_StreamLoading(object sender, StreamLoadingEventArgs e)  
         {  
             string fileName = Path.GetFileName(e.AlternateStreamName);  
             // The DecryptFile method will return a stream which was loaded from the encrypted file and decrypted it as  
             // a stream.  
             e.AlternateStream = DecryptFile(@"..\..\Data\" + fileName);  
         }  
  
  
         private void winformsMap1_MouseMove(object sender, MouseEventArgs e)  
         {  
             //Displays the X and Y in screen coordinates.  
             statusStrip1.Items["toolStripStatusLabelScreen"].Text = "X:" + e.X + " Y:" + e.Y;  
  
             //Gets the PointShape in world coordinates from screen coordinates.  
             PointShape pointShape = ExtentHelper.ToWorldCoordinate(winformsMap1.CurrentExtent, new ScreenPointF(e.X, e.Y), winformsMap1.Width, winformsMap1.Height);  
  
             //Displays world coordinates.  
             statusStrip1.Items["toolStripStatusLabelWorld"].Text = "(world) X:" + Math.Round(pointShape.X, 4) + " Y:" + Math.Round(pointShape.Y, 4);  
         }  
  
         private void btnClose_Click(object sender, EventArgs e)  
         {  
             this.Close();  
         }  
  
  
  
     }  
 }  
 </code>