protected void btnExport_Click(object sender, EventArgs e)
        {
            InMemoryFeatureLayer tempEditlayer = new InMemoryFeatureLayer();
            tempEditlayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.CreateSimpleCircleStyle(GeoColor.FromArgb(180, 102, 255, 102), 10, GeoColor.StandardColors.DarkGreen, 1);
            tempEditlayer.ZoomLevelSet.ZoomLevel01.DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Green, 4, true);
            tempEditlayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.CreateSimpleAreaStyle(GeoColor.FromArgb(180, 102, 255, 102), GeoColor.StandardColors.DarkGreen, 1);
            tempEditlayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
            foreach (Feature feature in Map1.EditOverlay.Features)
            {
                if (!tempEditlayer.InternalFeatures.Contains(feature.Id))
                {
                    tempEditlayer.InternalFeatures.Add(feature.Id, feature);
                }
            }

            LayerOverlay tempOverlay = new LayerOverlay("TempOverlay");
            tempOverlay.IsBaseOverlay = false;
            tempOverlay.Layers.Add(tempEditlayer);
            Map1.CustomOverlays.Add(tempOverlay);

            Bitmap result = Map1.GetBitmap((int)Map1.WidthInPixels,(int)Map1.HeightInPixels);

            PdfDocument doc = new PdfDocument();
            PdfPage page = new PdfPage();
            XImage img = XImage.FromGdiPlusImage(result);
            img.Interpolate = false;
            doc.Pages.Add(page);

            XGraphics xgr = XGraphics.FromPdfPage(doc.Pages[0]);
            xgr.DrawImage(img, 0, 0);

            doc.Save(@"d:\capture.pdf");
            doc.Close();

            Map1.CustomOverlays.Remove(tempOverlay);
        }