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====== Source Code ServicesEditionSample ZoomToFullExtent CS 100415.zip ======


====Program.cs====

<code csharp> using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Windows.Forms;  
  
 namespace ZoomToFullExtent  
 {  
     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.Collections.ObjectModel;  
 using System.Drawing;  
 using System.Windows.Forms;  
 using ThinkGeo.MapSuite.Core;  
  
 namespace ZoomToFullExtent  
 {  
     public partial class TestForm : Form  
     {  
         private MapEngine mapEngine = new MapEngine();  
         private Bitmap bitmap = null;  
  
        public TestForm()  
         {  
             InitializeComponent();  
         }  
  
         private void TestForm_Load(object sender, EventArgs e)  
         {  
             // Sets the extent and the background color  
             mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-98.89,27.74,-56.97,6.78), Map.Width, Map.Height);  
             mapEngine.BackgroundFillBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);  
  
             //Displays the World Map Kit as a background.  
             ThinkGeo.MapSuite.Core.WorldMapKitLayer worldMapKitLayer = new ThinkGeo.MapSuite.Core.WorldMapKitLayer();  
             mapEngine.StaticLayers.Add(worldMapKitLayer);  
  
             //Adds countries and capitals shapefiles.  
             ShapeFileFeatureLayer Layer1 = new ShapeFileFeatureLayer(@"..\..\Data\countries02.shp");  
             Layer1.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country2;  
             Layer1.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
  
             ShapeFileFeatureLayer Layer2 = new ShapeFileFeatureLayer(@"..\..\Data\worldcapitals.shp");  
             Layer2.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.Capital1;  
             Layer2.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
  
             mapEngine.StaticLayers.Add(Layer1);  
             mapEngine.StaticLayers.Add(Layer2);  
  
  
             DrawImage();  
         }  
  
         //Function for getting the extent based on a collection of layers.  
         //It gets the overall extent of all the layers.  
         private RectangleShape GetFullExtent(GeoCollection<Layer> Layers)  
         {  
             Collection<BaseShape> rectangleShapes = new Collection<BaseShape>();  
  
             foreach (Layer layer in Layers)  
             {  
                 layer.Open();  
                 if (layer.HasBoundingBox == true) rectangleShapes.Add(layer.GetBoundingBox());  
             }  
             return ExtentHelper.GetBoundingBoxOfItems(rectangleShapes);  
         }  
  
  
         private void DrawImage()  
         {  
             if (bitmap != null) { bitmap.Dispose(); }  
             bitmap = new Bitmap(Map.Width, Map.Height);  
             mapEngine.OpenAllLayers();  
             mapEngine.DrawStaticLayers(bitmap, GeographyUnit.DecimalDegree);  
             mapEngine.CloseAllLayers();  
  
             Map.Image = bitmap;  
         }  
  
         private void ToolBar_ButtonClick(object sender, ToolBarButtonClickEventArgs e)  
         {  
             switch (e.Button.Tag.ToString())  
             {  
                 case "Zoom In":  
                     mapEngine.CurrentExtent.ScaleDown(50);  
                     break;  
                 case "Zoom Out":  
                     mapEngine.CurrentExtent.ScaleUp(50);  
                     break;  
                 case "Full Extent":  
                     //Sets the current extent according to the overall extent of the static layers.  
                     mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(GetFullExtent(mapEngine.StaticLayers), Map.Width,Map.Height);  
                     break;  
                 case "Pan Left":  
                     mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Left, 20);  
                     break;  
                 case "Pan Right":  
                     mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Right, 20);  
                     break;  
                 case "Pan Up":  
                     mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Up, 20);  
                     break;  
                 case "Pan Down":  
                     mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Down, 20);  
                     break;  
                 default:  
                     break;  
             }  
             DrawImage();  
         }  
  
         private void btnClose_Click(object sender, EventArgs e)  
         {  
             this.Close();  
         }  
  
         private void Map_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(mapEngine.CurrentExtent, new ScreenPointF(e.X, e.Y), Map.Width, Map.Height);  
  
             //Displays world coordinates.  
             statusStrip1.Items["toolStripStatusLabelWorld"].Text = "(world) X:" + Math.Round(pointShape.X, 4) + " Y:" + Math.Round(pointShape.Y, 4);  
         }  
     }  
 }  
 </code>
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