public string getPlanMapImageAsBase64String(string planID, string imageWidth, string imageHeight)
        {
            try
            {
                MgUserInformation userInfo = null;
                string mapWebTierInit = ConfigurationManager.AppSettings["MGWebTierInit"].ToString();
                MapGuideApi.MgInitializeWebTier(mapWebTierInit);

                // Om kartsession finns för applikationssession använd den annars skapa ny kartssitesession
                string mapSiteSessionID = null;
                if (Session["MapSiteSessionID"] != null)
                {
                    mapSiteSessionID = Session["MapSiteSessionID"].ToString();
                    userInfo = new MgUserInformation(mapSiteSessionID);
                }
                else
                {
                    // Initierar kartsite och kartsession
                    string mapUserName = ConfigurationManager.AppSettings["MGUserName"].ToString();
                    string mapUserPass = ConfigurationManager.AppSettings["MGUserPass"].ToString();

                    userInfo = new MgUserInformation(mapUserName, mapUserPass);
                    MgSite mapSite = new MgSite();
                    mapSite.Open(userInfo);

                    userInfo.Dispose();

                    mapSiteSessionID = mapSite.CreateSession();

                    //mapSite.Close();

                    Session["MapSiteSessionID"] = mapSiteSessionID;

                    userInfo = new MgUserInformation(mapSiteSessionID);
                }

                //bool test = resSvc.ResourceExists(mapResId);

                string mapSurfaceFactor = ConfigurationManager.AppSettings["MGMapSurfaceFactor"].ToString();
                string mapRes = ConfigurationManager.AppSettings["MGMapResource"].ToString();
                string planRes = ConfigurationManager.AppSettings["MGPlanytorResource"].ToString();
                string planClassName = ConfigurationManager.AppSettings["MGPlanytorClassName"].ToString();
                string planFilterColumn = ConfigurationManager.AppSettings["MGPlanytorFilterColumn"].ToString();
                string planGeometryColumn = ConfigurationManager.AppSettings["MGPlanytorGeometryColumn"].ToString();
                string planytorStrokeRgbaColor = ConfigurationManager.AppSettings["MGPlanytorStrokeRgbaColor"].ToString();
                string planytorForegroundRgbaColor = ConfigurationManager.AppSettings["MGPlanytorForegroundRgbaColor"].ToString();

                string mapImageSizeFromServer = ConfigurationManager.AppSettings["MGMapImageSizeFromServer"].ToString();

                // Standardvärde för storlek på kartbild, används om värde ej finns i Settings.config eller skickas in som parametrar i webbmetod
                string mapImageWidthPixel = "400";
                string mapImageHeightPixel = "300";
                // Väljer bredd och höjd på kartbild om värde ska finnas i Settings.config samt indikeras att de ska användas
                // annars förväntas värde skickas med i webbmetod
                if (mapImageSizeFromServer.ToLower() == "true")
                {
                    mapImageWidthPixel = ConfigurationManager.AppSettings["MGMapImageWidth"].ToString();
                    mapImageHeightPixel = ConfigurationManager.AppSettings["MGMapImageHeight"].ToString();
                }
                else
                {
                    if (!string.IsNullOrWhiteSpace(imageWidth) && !string.IsNullOrWhiteSpace(imageHeight))
                    {
                        mapImageWidthPixel = imageWidth;
                        mapImageHeightPixel = imageHeight;
                    }
                }

                MgSiteConnection siteConnection = new MgSiteConnection();
                siteConnection.Open(userInfo);

                MgResourceService resSvc = (MgResourceService)siteConnection.CreateService(MgServiceType.ResourceService);
                MgResourceIdentifier mapResId = new MgResourceIdentifier(mapRes);
                MgFeatureService featSvc = (MgFeatureService)siteConnection.CreateService(MgServiceType.FeatureService);
                MgResourceIdentifier planResId = new MgResourceIdentifier(planRes);

                // Filter för planDoc efter planDoc-ID
                MgFeatureQueryOptions featureQuery = new MgFeatureQueryOptions();
                featureQuery.SetFilter(planFilterColumn + " = " + planID);

                MgFeatureReader featureReader = featSvc.SelectFeatures(planResId, planClassName, featureQuery);
                MgByteReader byteReaderGeometry = null;
                MgAgfReaderWriter agfReaderWriter = new MgAgfReaderWriter();
                MgGeometryCollection geometryCollection = new MgGeometryCollection();
                int featureCount = 0;
                try
                {
                    while (featureReader.ReadNext())
                    {
                        byteReaderGeometry = featureReader.GetGeometry(planGeometryColumn);
                        MgGeometry districtGeometry = agfReaderWriter.Read(byteReaderGeometry);
                        geometryCollection.Add(districtGeometry);

                        featureCount++;
                    }
                }
                finally
                {
                    featureReader.Close();
                }

                MgGeometryFactory geometryFactory = new MgGeometryFactory();
                MgMultiGeometry multiGeometry = geometryFactory.CreateMultiGeometry(geometryCollection);

                MgMap map = new MgMap(siteConnection);

                MgEnvelope envelope = multiGeometry.Envelope();

                // Anpassar ev. punkt till komma i tal som hanteras som textsträng för kommande konvertering
                if (mapImageHeightPixel.IndexOf(".") != -1)
                {
                    mapImageHeightPixel = mapImageHeightPixel.Replace(".", ",");
                }
                if (mapImageWidthPixel.IndexOf(".") != -1)
                {
                    mapImageWidthPixel = mapImageWidthPixel.Replace(".", ",");
                }

                // Önskad bilds höjd och bredd i punkter
                double imageHeightPixel = Convert.ToDouble(mapImageHeightPixel);
                double imageWidthPixel = Convert.ToDouble(mapImageWidthPixel);

                map.DisplayDpi = 120;

                double heightEnvelopeN = envelope.Height;
                double widthEnvelopeE = envelope.Width;

                // Anpassar utbredningen på sökta planer (envelope) till bildens format för att bevara skalriktighet
                string mapFarthest = string.Empty;
                if (heightEnvelopeN > widthEnvelopeE)
                    mapFarthest = "height";
                else
                    mapFarthest = "width";

                string imageFarthest = string.Empty;
                if (imageHeightPixel > imageWidthPixel)
                    imageFarthest = "height";
                else
                    imageFarthest = "width";

                double scale = 1.0;
                const double inch = 2.54;

                // Ändring av kartans utbredning och addering av utrymme i kartans bild runt planavgränsningen
                // Map = avgränsning enligt planytan (utbredning i kartan), Image = önskad bild att skapa med kartan
                // Om: kartans höjd är längst & bildens bredd är längst
                if (mapFarthest == "height" && imageFarthest == "width")
                {
                    scale = imageWidthPixel / imageHeightPixel * inch;

                    widthEnvelopeE = imageWidthPixel / imageHeightPixel * heightEnvelopeN * scale;
                }
                // Om: kartans bredd är längst & bildens höjd är längst
                else if (mapFarthest == "width" && imageFarthest == "height")
                {
                    scale = imageHeightPixel / imageWidthPixel * inch;

                    heightEnvelopeN = imageHeightPixel / imageWidthPixel * widthEnvelopeE * scale;
                }
                // Om: kartans höjd är längst & bildens höjd är längst
                else if (mapFarthest == "height" && imageFarthest == "height")
                {
                    double compareSide = (heightEnvelopeN / (imageHeightPixel / imageWidthPixel));
                    bool isCompareSideFarthest = false;
                    if (compareSide > widthEnvelopeE)
                    {
                        isCompareSideFarthest = true;
                    }
                    else
                    {
                        isCompareSideFarthest = false;
                    }

                    scale = imageHeightPixel / imageWidthPixel * inch;

                    if (isCompareSideFarthest)
                    {
                        widthEnvelopeE = heightEnvelopeN / (imageHeightPixel / imageWidthPixel) * scale;
                    }
                    else
                    {
                        heightEnvelopeN = (imageHeightPixel / imageWidthPixel) * widthEnvelopeE * scale;
                    }
                }
                // Om(annars): kartans bredd är längst & bildens bredd är längst
                else
                {
                    double compareSide = (widthEnvelopeE / (imageWidthPixel / imageHeightPixel));
                    bool isCompareSideFarthest = false;
                    if (compareSide > heightEnvelopeN)
                    {
                        isCompareSideFarthest = true;
                    }
                    else
                    {
                        isCompareSideFarthest = false;
                    }

                    scale = imageWidthPixel / imageHeightPixel * inch;

                    if (isCompareSideFarthest)
                    {
                        heightEnvelopeN = widthEnvelopeE / (imageWidthPixel / imageHeightPixel) * scale;
                    }
                    else
                    {
                        widthEnvelopeE = heightEnvelopeN * (imageWidthPixel / imageHeightPixel) * scale;
                    }
                }

                double mapSurfaceFactorDbl = Convert.ToDouble(mapSurfaceFactor.Replace('.', ','));
                double newHeightN = heightEnvelopeN * mapSurfaceFactorDbl;
                double newWidthE = widthEnvelopeE * mapSurfaceFactorDbl;
                MgCoordinate lowerLeft = envelope.LowerLeftCoordinate;
                MgCoordinate upperRight = envelope.UpperRightCoordinate;
                envelope = new MgEnvelope(lowerLeft.X - (newWidthE - widthEnvelopeE) / 2,
                                          lowerLeft.Y - (newHeightN - heightEnvelopeN) / 2,
                                          upperRight.X + (newWidthE - widthEnvelopeE) / 2,
                                          upperRight.Y + (newHeightN - heightEnvelopeN) / 2);

                map.Create(resSvc, mapResId, mapResId.Name);

                // Skapa lagerdefinition i XML
                DefineAreaLayer areaLayer = new DefineAreaLayer();
                areaLayer.FeatureName = planClassName;
                areaLayer.FeatureSourceName = planRes;
                areaLayer.GeometryColumnName = planGeometryColumn;
                areaLayer.Filter = planFilterColumn + " = " + planID;

                LayerScaleRangeCollection lsrCollection = new LayerScaleRangeCollection();

                LayerScaleRange lsr = new LayerScaleRange();
                // MinScale applikations-default till 0 (inklusive) om utelämnat, MaxScale applikations-default till kartans maxskala (exklusive) om utelämnat
                //lsr.MinScale = "0";
                //lsr.MaxScale = "100000000";
                AreaTypeStyle ats = new AreaTypeStyle();

                AreaRuleCollection arCollection = new AreaRuleCollection();

                AreaRule ar = new AreaRule();
                //ar.Filter = planFilterColumn + " = " + planID;
                ar.LegendLabel = "Plan" + planID;
                AreaSymbolization2D symb2D = new AreaSymbolization2D();
                Fill fill = new Fill();
                fill.BackgroundColor = "FFFF0000";
                fill.FillPattern = "Solid";
                fill.ForegroundColor = convertRgbsToHexColor(planytorForegroundRgbaColor);
                Stroke stroke = new Stroke();
                stroke.Color = convertRgbsToHexColor(planytorStrokeRgbaColor);
                stroke.LineStyle = "Solid";
                stroke.Thickness = "1";
                stroke.Unit = "Points";
                symb2D.Fill = fill;
                symb2D.Stroke = stroke;
                ar.Symbolization2D = symb2D;
                arCollection.Add(ar);

                ats.AreaRules = arCollection;

                lsr.AreaTypeStyle = ats;

                lsrCollection.Add(lsr);

                areaLayer.LayerScaleRanges = lsrCollection;

                XmlDocument xmlFile = new XmlDocument();
                //XDocument xmlFile = new XDocument();
                // om returnerande av xml-dokument
                //xmlFile = areaLayer.CreateLayerDefinitionAsXmlDocument();
                // om returnerande av xml-sträng
                xmlFile.LoadXml(areaLayer.CreateLayerDefinitionAsXmlString());
                //xmlFile = areaLayer.CreateLayerDefinitionAsXDocument();
                //xmlFile.Save(Server.MapPath(this.Context.Request.ApplicationPath) + "XmlTestLayerDefinition.xml");

                using (MemoryStream msNewPlanLayer = new MemoryStream())
                {
                    xmlFile.Save(msNewPlanLayer);
                    msNewPlanLayer.Position = 0L;
                    //Note we do this to ensure our XML content is free of any BOM characters
                    byte[] layerDefinition = msNewPlanLayer.ToArray();
                    Encoding utf8 = Encoding.UTF8;
                    String layerDefStr = new String(utf8.GetChars(layerDefinition));
                    layerDefinition = new byte[layerDefStr.Length - 1];
                    int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, layerDefinition, 0);
                    // Save the new layer definition to the session repository
                    MgByteSource byteSource = new MgByteSource(layerDefinition, layerDefinition.Length);
                    MgResourceIdentifier layerResourceID = new MgResourceIdentifier("Session:" + mapSiteSessionID + "//" + "planytor" + ".LayerDefinition"); //"SearchedPlan" + planID + ".LayerDefinition");
                    resSvc.SetResource(layerResourceID, byteSource.GetReader(), null);

                    MgLayer newPlanLayer = new MgLayer(layerResourceID, resSvc);
                    newPlanLayer.SetName("Sökta planer");
                    newPlanLayer.SetVisible(true);
                    newPlanLayer.SetLegendLabel("Sökta planer");
                    newPlanLayer.SetDisplayInLegend(true);
                    MgLayerCollection layerCollection = map.GetLayers();
                    if (!layerCollection.Contains(newPlanLayer))
                    {
                        // Insert the new layer at position 0 so it is at the top
                        // of the drawing order
                        layerCollection.Insert(0, newPlanLayer);
                    }
                    else
                    {
                        layerCollection.Remove(newPlanLayer);
                        layerCollection.Insert(0, newPlanLayer);
                    }

                    map.Save();
                }

                double mapScale = map.ViewScale;

                // XML-dokument till ren text
                //StringWriter stringWriter = new StringWriter();
                //XmlWriter xmlTextWriter = XmlWriter.Create(stringWriter);
                //xmlFile.WriteTo(xmlTextWriter);
                //xmlTextWriter.Flush();
                string xmlSelection = string.Empty;
                //string xmlSelection = stringWriter.GetStringBuilder().ToString();

                MgSelection selection = null;
                if (!string.IsNullOrEmpty(xmlSelection))
                {
                    selection = new MgSelection(map, xmlSelection);
                }
                else
                {
                    selection = new MgSelection(map);
                }

                MgColor color = new MgColor("255,255,255");

                // Skapar bild av kartan
                MgRenderingService renderingService = (MgRenderingService)siteConnection.CreateService(MgServiceType.RenderingService);
                //MgByteReader byteReader = renderingService.RenderMap(map, selection, "PNG");
                MgByteReader byteReader = renderingService.RenderMap(map, selection, envelope, Convert.ToInt32(imageWidthPixel), Convert.ToInt32(imageHeightPixel), color, "PNG");
                MemoryStream ms = new MemoryStream();
                byte[] byteBuffer = new byte[1024];
                int numBytes = byteReader.Read(byteBuffer, 1024);
                while (numBytes > 0)
                {
                    ms.Write(byteBuffer, 0, numBytes);
                    numBytes = byteReader.Read(byteBuffer, 1024);
                }
                byte[] mapImageByte = ms.ToArray();
                string imageBase64String = Convert.ToBase64String(mapImageByte);

                map.Dispose();
                siteConnection.Dispose();

                DataTable dtResult = new DataTable();
                DataColumn dc = new DataColumn("MAPIMAGEBASE64");
                dtResult.Columns.Add(dc);
                dc = new DataColumn("WIDTH");
                dtResult.Columns.Add(dc);
                dc = new DataColumn("HEIGHT");
                dtResult.Columns.Add(dc);
                DataRow dr = dtResult.NewRow();
                dr["MAPIMAGEBASE64"] = imageBase64String;
                dr["WIDTH"] = imageWidthPixel;
                dr["HEIGHT"] = imageHeightPixel;
                dtResult.Rows.Add(dr);

                //TODO: MAP: Vad kan returneras, base64 eller länk där bild temporärt genereras på server
                //JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
                //return jsonSerializer.Serialize(imageBase64String);

                return getDatatableAsJson(dtResult);
            }
            catch (System.Exception ex)
            {
                UtilityException.LogException(ex, "Webbmetod : getPlanMapImageAsBase64String", true);
                return null;
            }
        }
 public void Add(LayerScaleRange aLayerScaleRange)
 {
     List.Add(aLayerScaleRange);
 }