Source Code ServicesEditionSample MultiColumnLabeling CS 090922.zip

 using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Windows.Forms;  
 
 namespace MultiColumnLabeling  
 {  
     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.Windows.Forms;  
 using ThinkGeo.MapSuite.Core;  
 
 namespace MultiColumnLabeling  
 {  
     public partial class TestForm : Form  
     {  
         private MapEngine mapEngine = new MapEngine();  
         private Bitmap bitmap = null;  
         ShapeFileFeatureLayer worldLayer = null;  
         ShapeFileFeatureLayer volcanoLayer = 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(-133.30,56.94,-129.66,54.50), 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);  
 
 
             volcanoLayer = new ShapeFileFeatureLayer(@"..\..\Data\volcanoes.shp", ShapeFileReadWriteMode.ReadOnly);  
             volcanoLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.CreateSimpleTriangleStyle(GeoColor.StandardColors.Orange, 16, GeoColor.StandardColors.Black);  
             volcanoLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
             mapEngine.StaticLayers.Add("volcanoLayer", volcanoLayer);  
 
             //Adds the volcanoes shapefile for labeling the columns Name, Elevation, Type and State.  
             ShapeFileFeatureLayer labelVolcanoLayer = new ShapeFileFeatureLayer(@"..\..\Data\volcanoes.shp", ShapeFileReadWriteMode.ReadOnly);  
 
             //TextStyle for the first line, Name and Elevation.  
             labelVolcanoLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add (TextStyles.CreateSimpleTextStyle("MergedColumn", "Arial", 8,  
                 DrawingFontStyles.Regular, GeoColor.StandardColors.Black, 10, 12));  
 
             //TextStyle for the second line, Type and State.  
             labelVolcanoLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(TextStyles.CreateSimpleTextStyle("MergedColumn2", "Arial", 8,  
                DrawingFontStyles.Italic, GeoColor.StandardColors.Black, 10, 0));  
 
             labelVolcanoLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
             mapEngine.StaticLayers.Add("labelVolcanoLayer", labelVolcanoLayer);  
 
             //Hooks up the event for CustomColumnFetch used to label the different columns.  
             ((ShapeFileFeatureSource)labelVolcanoLayer.FeatureSource).CustomColumnFetch  
             += new EventHandler<CustomColumnFetchEventArgs>(labelVolcanoLayer_CustomColumnFetch);  
 
             DrawImage();  
         }  
 
         //Event used for labeling based on the different columns.  
         void labelVolcanoLayer_CustomColumnFetch(object sender, CustomColumnFetchEventArgs e)  
         {  
             //For the first TextStyle.  
             if (e.ColumnName == "MergedColumn")  
             {  
                 ShapeFileFeatureLayer labelVolcanoLayer = (ShapeFileFeatureLayer)mapEngine.StaticLayers["labelVolcanoLayer"];  
                 Feature currentFeature = labelVolcanoLayer.QueryTools.GetFeatureById(e.Id, ReturningColumnsType.AllColumns);  
                 e.ColumnValue = currentFeature.ColumnValues["Name"] + "," + currentFeature.ColumnValues["Elevation"] + "m";  
             }  
             //For the second TextStyle.  
             else if (e.ColumnName == "MergedColumn2")  
             {  
                 ShapeFileFeatureLayer labelVolcanoLayer = (ShapeFileFeatureLayer)mapEngine.StaticLayers["labelVolcanoLayer"];  
                 Feature currentFeature = labelVolcanoLayer.QueryTools.GetFeatureById(e.Id, ReturningColumnsType.AllColumns);  
                 e.ColumnValue = currentFeature.ColumnValues["Type"] + "(" + currentFeature.ColumnValues["State"] + ")";  
             }  
         }  
 
       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();  
         }  
     }  
 }