How to add Annotation Layer to ArcMap from CAD file

AntonPerlov1 — Mon, 11 Mar 2013 14:08:20 GMT

I need to add Annotation Layers from .dwg and .dgn CAD files to arcmap

At first I used Block of code like this

ESRI.ArcGIS.Geodatabase.IWorkspaceFactory pWorkspaceFact = new
                 ESRI.ArcGIS.DataSourcesFile.CadWorkspaceFactory();
                //Open the workspace.
                ESRI.ArcGIS.Geodatabase.IWorkspace pWorkspace = pWorkspaceFact.OpenFromFile
                    (workspace_path, 0);

                ESRI.ArcGIS.Geodatabase.IFeatureWorkspace pFeatureWorkspace =
    (ESRI.ArcGIS.Geodatabase.IFeatureWorkspace)pWorkspace;
 IGroupLayer cl = new GroupLayerClass();
            cl.Name = fc_name;


                IAnnotationLayerFactory lf = new FDOGraphicsLayerFactory() as IAnnotationLayerFactory;
                IAnnotationLayer al= lf.OpenAnnotationLayer(pFeatureWorkspace, null, System.String.Concat(fc_name,":Annotation"));

                cl.Add(al as ILayer);

but this code generates Annotation Layer with broken emty datasource. And datasource cannot be set from CAD manually.

There also is interface
EngineCadAnnotationLayerFactory and CoClass EngineCadAnnotationLayerFactoryClass, but they only implement ILayerFactory interface, not the IAnnotationLayerFacory interface. This trouble makes unreachable OpenAnnotationLayer() method.

Can anyone help me to find solution?

Re: How to add Annotation Layer to ArcMap from CAD file

LeoDonahue — Mon, 11 Mar 2013 14:15:36 GMT

hang on... posted the wrong thing, looking it up again..

Re: How to add Annotation Layer to ArcMap from CAD file

AntonPerlov1 — Tue, 12 Mar 2013 11:09:06 GMT

The solution is finally found

                CadAnnotationLayerClass newlayer = new CadAnnotationLayerClass();
                newlayer.DataSourceType = "CAD Annotation Feature Class";
                newlayer.Name = "Аnnotations";

                newlayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(System.String.Concat(fc_name, ":Annotation")); ;

topic Re: How to add Annotation Layer to ArcMap from CAD file in ArcObjects SDK Questions

How to add Annotation Layer to ArcMap from CAD file

Re: How to add Annotation Layer to ArcMap from CAD file

Re: How to add Annotation Layer to ArcMap from CAD file