[mapguide-users] Re: change layer filter after map has been loaded

[tmblackflag]

that worked, for anyone trying to do something similar here is the code:

          InitializeWebTier();
            MgUserInformation userInfo = new MgUserInformation(sessionId);
            MgSiteConnection siteConnection = new MgSiteConnection();
            siteConnection.Open(userInfo);
            string myLayerName = "Committed - Deal Type";

            MgResourceService resourceService =
siteConnection.CreateService(MgServiceType.ResourceService) as
MgResourceService;
            MgMap map = new MgMap();
            map.Open(resourceService, floor1);
            MgLayerCollection layers = map.GetLayers();
            MgLayer layer = GetLayerByName(map, myLayerName);

            MgResourceIdentifier resId = new
MgResourceIdentifier(layer.GetFeatureSourceId());
            MgResourceIdentifier layerDefResId = layer.GetLayerDefinition();
            MgByteReader byteReader =
resourceService.GetResourceContent(layerDefResId);

            MgByteReader rd = resourceService.GetResourceContent(new
MgResourceIdentifier("Library://LAYERS/Reports/Committed - Deal
Type.LayerDefinition"));
            XmlDocument doc = new XmlDocument();
            doc.PreserveWhitespace = true;
            doc.LoadXml(rd.ToString());
            doc.GetElementsByTagName("Filter").Item(0).InnerText = "change
layer filter here";
            MgResourceIdentifier tempLayer = new
MgResourceIdentifier("Session:" + sessionId + "//Committed - Deal Type
New.LayerDefinition");
            resourceService.SetResource(tempLayer, new
MgByteReader(doc.OuterXml, "text/xml"), null);

            MgLayer newLayer = new MgLayer(tempLayer, resourceService);
            newLayer.SetName("Committed - Deal Type New");
            newLayer.SetLegendLabel(layer.GetLegendLabel());
            newLayer.SetDisplayInLegend(layer.GetDisplayInLegend());
            newLayer.SetVisible(true);
            newLayer.SetSelectable(layer.GetSelectable());
            layers.Insert(layers.IndexOf(layer), newLayer);
            layers.Remove(layer);
            newLayer.ForceRefresh();
            map.Save(resourceService);

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