using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Windows.Forms;  
 
 namespace ZedGraph  
 {  
     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());  
         }  
     }  
 }  
 

 using System;  
 using System.Drawing;  
 using System.Globalization;  
 using System.Windows.Forms;  
 using ThinkGeo.MapSuite.Core;  
 using ZedGraph;  
 
 namespace ZedGraph  
 {  
     public partial class TestForm : Form  
     {  
         private delegate Bitmap ToUIThreadDelegate(ZedGraphDrawingEventArgs e);  
         private MapEngine mapEngine = new MapEngine();  
         private Bitmap bitmap = null;  
         ShapeFileFeatureLayer worldLayer = null;  
         ShapeFileFeatureLayer cityFlueLayer = null;  
 
         public TestForm()  
         {  
             InitializeComponent();  
         }  
 
         private void TestForm_Load(object sender, EventArgs e)  
         {  
             // Set the full extent and the background color  
             mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-99.83,34.27,-89.28,27.15), Map.Width, Map.Height);  
             mapEngine.BackgroundFillBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);  
 
             // Add the static layers to the MapEngine  
             worldLayer = new ShapeFileFeatureLayer(@"..\..\Data\Countries02.shp", ShapeFileReadWriteMode.ReadOnly);  
             worldLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.County1;  
             worldLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
             mapEngine.StaticLayers.Add("WorldLayer", worldLayer);  
 
             //Create our Zedgraph Sytle and wire up the event.  
             ZedGraphStyle zedGraphStyle = new ZedGraphStyle();  
             zedGraphStyle.ZedGraphDrawing += new EventHandler<ZedGraphDrawingEventArgs>(zedGraphStyle_ZedGraphDrawing);  
 
             //Adds the columns used by the ZedGraph  
             zedGraphStyle.RequiredColumnNames.Add("WHITE");  
             zedGraphStyle.RequiredColumnNames.Add("BLACK");  
             zedGraphStyle.RequiredColumnNames.Add("ASIAN");  
             zedGraphStyle.RequiredColumnNames.Add("HISPANIC");  
             zedGraphStyle.RequiredColumnNames.Add("AREANAME");  
 
             cityFlueLayer = new ShapeFileFeatureLayer(@"..\..\Data\majorcities.shp", ShapeFileReadWriteMode.ReadOnly);  
             cityFlueLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(zedGraphStyle);  
             cityFlueLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
 
             mapEngine.StaticLayers.Add("CityLayer", cityFlueLayer);  
 
             DrawImage();  
         }  
 
         private void zedGraphStyle_ZedGraphDrawing(object sender, ZedGraphDrawingEventArgs e)  
         {  
             e.Bitmap = (Bitmap)this.Invoke(new ToUIThreadDelegate(ZedGraphDrawing), new object[] { e });  
         }  
 
 
         private Bitmap ZedGraphDrawing(ZedGraphDrawingEventArgs e)  
         {  
             double scale = ExtentHelper.GetScale(mapEngine.CurrentExtent, mapEngine.Canvas.Width, GeographyUnit.DecimalDegree);  
 
             //Sets the size of the chart proportional to the total population  
             //Note that here the values are hard coded. This could be extended to be customizable.  
             int maximumGraphSize = 135;  
             int minimumGraphSize = 300;  
             int maximumValue = 8000000;  
             int minimumValue = 100000;  
 
             //Gets the different values for the current feature and calculates the total value and the  
             //size of the chart.  
             int value1 = Convert.ToInt32(e.Feature.ColumnValues["WHITE"]);  
             int value2 = Convert.ToInt32(e.Feature.ColumnValues["BLACK"]);  
             int value3 = Convert.ToInt32(e.Feature.ColumnValues["ASIAN"]);  
             int value4 = Convert.ToInt32(e.Feature.ColumnValues["HISPANIC"]);  
             string areaName = e.Feature.ColumnValues["AREANAME"];  
             int totalValue = value1 + value2 + value3 + value4;  
             int perc1 = (value1 * 100) / totalValue;  
             int perc2 = (value2 * 100) / totalValue;  
             int perc3 = (value3 * 100) / totalValue;  
             int perc4 = (value4 * 100) / totalValue;  
 
             int graphHeight = (int)(maximumGraphSize - ((totalValue - minimumValue) * (maximumGraphSize - minimumGraphSize)) /  
                                           (maximumValue - minimumValue));  
 
             //Sets the properties of the ZedGraphControl for the desired appearance.  
             ZedGraphControl zedGraph = new ZedGraphControl();  
             zedGraph.Size = new Size(graphHeight, graphHeight);  
             zedGraph.GraphPane.Fill.Type = FillType.None;  
             zedGraph.GraphPane.Chart.Fill.Type = FillType.None;  
             zedGraph.GraphPane.Border.IsVisible = false;  
             zedGraph.GraphPane.Chart.Border.IsVisible = false;  
             zedGraph.GraphPane.XAxis.IsVisible = false;  
             zedGraph.GraphPane.YAxis.IsVisible = false;  
             zedGraph.GraphPane.Legend.IsVisible = false;  
             zedGraph.GraphPane.Title.IsVisible = false;  
             zedGraph.GraphPane.IsFontsScaled = false;  
 
             //Adds the different pie slices with the percentage label.  
             if (value1 > 0)  
             {  
                 PieItem pieItem1 = null;  
                 pieItem1 = zedGraph.GraphPane.AddPieSlice(value1, Color.FromArgb(150, Color.Blue), Color.White, 45f, 0,Convert.ToString(perc1));  
                 pieItem1.LabelDetail.IsVisible = true;  
             }  
 
             if (value2 > 0)  
             {  
                 PieItem pieItem2 = null;  
                 pieItem2 = zedGraph.GraphPane.AddPieSlice(value2, Color.FromArgb(150, Color.Brown), Color.White, 45f, 0, Convert.ToString(perc2));  
                 pieItem2.LabelDetail.IsVisible = true;  
              }  
 
             if (value3 > 0)  
             {  
                 PieItem pieItem3 = null;  
                 pieItem3 = zedGraph.GraphPane.AddPieSlice(value3, Color.FromArgb(150, Color.Yellow), Color.White, 45f, 0, Convert.ToString(perc3));  
                 pieItem3.LabelDetail.IsVisible = true;  
             }  
 
             if (value4 > 0)  
             {  
                 PieItem pieItem4 = null;  
                 pieItem4 = zedGraph.GraphPane.AddPieSlice(value4, Color.FromArgb(150, Color.Red), Color.White, 45f, 0, Convert.ToString(perc4));  
                 pieItem4.LabelDetail.IsVisible = true;  
             }  
 
             //Makes a text label to highlight the city name and the total value.  
             TextObj text = new TextObj(areaName + ": " + totalValue,0.1, 0.15, CoordType.PaneFraction);  
             text.Location.AlignH = AlignH.Left;  
             text.Location.AlignV = AlignV.Bottom;  
             text.FontSpec.Border.IsVisible = false;  
             text.FontSpec.Fill = new Fill(Color.White, Color.FromArgb(255, 100, 100), 45F);  
             text.FontSpec.StringAlignment = StringAlignment.Center;  
             zedGraph.GraphPane.GraphObjList.Add(text);  
 
             return zedGraph.GraphPane.GetImage();  
         }  
 
        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":  
                     mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-180.0, 83.0, 180.0, -90.0), 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();  
         }  
     }  
 }