diff --git a/Demo.WindowsForms/Source/Map.cs b/Demo.WindowsForms/Source/Map.cs
new file mode 100644
--- /dev/null
+++ b/Demo.WindowsForms/Source/Map.cs
@@ -0,0 +1,61 @@
+
+namespace Demo.WindowsForms
+{
+   using System.Windows.Forms;
+   using GMap.NET.WindowsForms;
+   using System.Drawing;
+   using System;
+   using System.Globalization;
+
+   /// <summary>
+   /// custom map of GMapControl
+   /// </summary>
+   public class Map : GMapControl
+   {
+      public long ElapsedMilliseconds;
+
+#if DEBUG
+      private int counter;
+      readonly Font DebugFont = new Font(FontFamily.GenericSansSerif, 14, FontStyle.Regular);
+      readonly Font DebugFontSmall = new Font(FontFamily.GenericSansSerif, 12, FontStyle.Bold);
+      DateTime start;
+      DateTime end;
+      int delta;
+
+      protected override void OnPaint(PaintEventArgs e)
+      {
+         start = DateTime.Now;
+
+         base.OnPaint(e);
+
+         end = DateTime.Now;
+         delta = (int)(end - start).TotalMilliseconds;
+      }
+
+      /// <summary>
+      /// any custom drawing here
+      /// </summary>
+      /// <param name="drawingContext"></param>
+      protected override void OnPaintOverlays(System.Drawing.Graphics g)
+      {
+         base.OnPaintOverlays(g);
+
+         g.DrawString(string.Format(CultureInfo.InvariantCulture, "{0:0.0}", Zoom) + "z, " + MapProvider + ", refresh: " + counter++ + ", load: " + ElapsedMilliseconds + "ms, render: " + delta + "ms", DebugFont, Brushes.Blue, DebugFont.Height, DebugFont.Height + 20);
+
+         //g.DrawString(ViewAreaPixel.Location.ToString(), DebugFontSmall, Brushes.Blue, DebugFontSmall.Height, DebugFontSmall.Height);
+
+         //string lb = ViewAreaPixel.LeftBottom.ToString();
+         //var lbs = g.MeasureString(lb, DebugFontSmall);
+         //g.DrawString(lb, DebugFontSmall, Brushes.Blue, DebugFontSmall.Height, Height - DebugFontSmall.Height * 2);
+
+         //string rb = ViewAreaPixel.RightBottom.ToString();
+         //var rbs = g.MeasureString(rb, DebugFontSmall);
+         //g.DrawString(rb, DebugFontSmall, Brushes.Blue, Width - rbs.Width - DebugFontSmall.Height, Height - DebugFontSmall.Height * 2);
+
+         //string rt = ViewAreaPixel.RightTop.ToString();
+         //var rts = g.MeasureString(rb, DebugFontSmall);
+         //g.DrawString(rt, DebugFontSmall, Brushes.Blue, Width - rts.Width - DebugFontSmall.Height, DebugFontSmall.Height);
+      }     
+#endif
+   }
+}