using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Windows.Forms;  
 
 namespace TimeBasedPointStyle  
 {  
     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 TimeBasedPointStyle  
 {  
     public partial class TestForm : Form  
     {  
         private MapEngine mapEngine = new MapEngine();  
         private Bitmap bitmap = null;  
         private ShapeFileFeatureLayer worldLayer = 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(-180.0, 83.0, 180.0, -90.0), 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);  
 
             ShapeFileFeatureLayer worldCapitalsLayer = new ShapeFileFeatureLayer(@"..\..\Data\WorldCapitals.shp", ShapeFileReadWriteMode.ReadOnly);  
             worldCapitalsLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
 
             TimeBasedPointStyle timeBasedPointStyle = new TimeBasedPointStyle();  
             timeBasedPointStyle.TimeZoneColumnName = "TimeZone";  
             timeBasedPointStyle.DaytimePointStyle = PointStyles.CreateSimpleCircleStyle(GeoColor.StandardColors.Yellow, 8);  
             timeBasedPointStyle.NighttimePointStyle = PointStyles.CreateSimpleCircleStyle(GeoColor.StandardColors.Gray, 8);  
 
             worldCapitalsLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Clear();  
             worldCapitalsLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(timeBasedPointStyle);  
             mapEngine.StaticLayers.Add("WorldCapitals", worldCapitalsLayer);  
 
             DrawImage();  
         }  
 
 
         private void DrawImage()  
         {  
             if (bitmap != null) { bitmap.Dispose(); }  
             bitmap = new Bitmap(Map.Width, Map.Height);  
             mapEngine.OpenAllLayers();  
             mapEngine.DrawStaticLayers(bitmap, GeographyUnit.DecimalDegree);  
             mapEngine.DrawDynamicLayers(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();  
         }  
     }  
 }  
 

 using System;  
 using System.Collections.Generic;  
 using System.Collections.ObjectModel;  
 using ThinkGeo.MapSuite.Core;  
 
 namespace TimeBasedPointStyle  
 {  
     // Mark the class Serializable so that it workes in SQL Server state  
     // and in every serialization context  
     [Serializable]  
     class TimeBasedPointStyle : Style  
     {  
         private PointStyle daytimePointStyle;  
         private PointStyle nighttimePointStyle;  
         private string timeZoneColumnName;  
 
         public TimeBasedPointStyle()  
             : this(string.Empty, new PointStyle(), new PointStyle())  
         { }  
 
         public TimeBasedPointStyle(string timeZoneColumnName, PointStyle daytimePointStyle, PointStyle nighttimePointStyle)  
         {  
             this.timeZoneColumnName = timeZoneColumnName;  
             this.daytimePointStyle = daytimePointStyle;  
             this.nighttimePointStyle = nighttimePointStyle;  
         }  
 
         public PointStyle DaytimePointStyle  
         {  
             get { return daytimePointStyle; }  
             set { daytimePointStyle = value; }  
         }  
 
         public PointStyle NighttimePointStyle  
         {  
             get { return nighttimePointStyle; }  
             set { nighttimePointStyle = value; }  
         }  
 
         public string TimeZoneColumnName  
         {  
             get { return timeZoneColumnName; }  
             set { timeZoneColumnName = value; }  
         }  
 
 
         protected override void DrawCore(IEnumerable<Feature> features, GeoCanvas canvas, Collection<SimpleCandidate> labelsInThisLayer, Collection<SimpleCandidate> labelsInAllLayers)  
         {  
             foreach (Feature feature in features)  
             {  
                 // Here we are going to do the calculation to see what  
                 // time it is for each feature and draw the approperate style  
                 float offsetToGmt = Convert.ToSingle(feature.ColumnValues[timeZoneColumnName]);  
                 DateTime localTime = DateTime.UtcNow.AddHours(offsetToGmt);  
                 if (localTime.Hour >= 7 && localTime.Hour <= 19)  
                 {  
                     // Daytime  
                     daytimePointStyle.Draw(new Collection<Feature>() { feature }, canvas, labelsInThisLayer, labelsInAllLayers);  
                 }  
                 else  
                 {  
                     //Nighttime  
 
                     nighttimePointStyle.Draw(new Collection<Feature>() { feature }, canvas, labelsInThisLayer, labelsInAllLayers);  
                 }  
             }  
         }  
 
         protected override Collection<string> GetRequiredColumnNamesCore()  
         {  
             Collection<string> columns = new Collection<string>();  
 
             // Grab any columns that the daytime style may need.  
             Collection<string> daytimeColumns = daytimePointStyle.GetRequiredColumnNames();  
             foreach (string column in daytimeColumns)  
             {  
                 if (!columns.Contains(column))  
                 {  
                     columns.Add(column);  
                 }  
             }  
 
             // Grab any columns that the nighttime style may need.  
             Collection<string> nighttimeColumns = nighttimePointStyle.GetRequiredColumnNames();  
             foreach (string column in nighttimeColumns)  
             {  
                 if (!columns.Contains(column))  
                 {  
                     columns.Add(column);  
                 }  
             }  
 
             // Make sure we add the timezone column  
             if (!columns.Contains(timeZoneColumnName))  
             {  
                 columns.Add(timeZoneColumnName);  
             }  
 
             return columns;  
         }  
     }  
 }