DataLinksManager3d.GetLineGroupInfo fails in AutoCAD Plant3D 2012/2013

by Fenton Webb

It seems that I found a slight problem with the Plant3d API in terms of obtaining the PipeLineGroupData from the DataLinksManager3d.GetLineGroupInfo().

If you are running into this issue, then try this code below…

[CommandMethod("GetLineGroupInfo")]    public void GetLineGroupInfo()    {      // get the AutoCAD Editor object so we can print to the command line      Editor ed = AcadApp.DocumentManager.MdiActiveDocument.Editor;           // select the object       PromptEntityResult res = ed.GetEntity("Pick Object obtain properties : ");      // if something selected      if (res.Status == PromptStatus.OK)      {        // get the current project object        PlantProject currentProj = Autodesk.ProcessPower.PlantInstance.PlantApplication.CurrentProject;        // get the Piping project part        Autodesk.ProcessPower.P3dProjectParts.PipingProject pipeProj = (Autodesk.ProcessPower.P3dProjectParts.PipingProject)currentProj.ProjectParts["Piping"];        // get the data links manager        DataLinksManager dlm = pipeProj.DataLinksManager;        // get the 3d data
links manager        DataLinksManager3d dlm3d = pipeProj.DataLinksManager3d;        // and then get the row id for the selected object        int rowId = dlm.FindAcPpRowId(res.ObjectId);             try        {          PipeLineGroupData lginfo = dlm3d.GetLineGroupInfo(rowId);        }        catch        {          // there is a slignt issue in the Plant that prevents getting lginfo by           // part rowid. Sorry about that. We can achieve the same thing using the          //  following workaround (see below)        }             // Parts are related to pipe line group via P3dLineGroupPartRelationship.         // So we need to traverse this relationship to get line group row id        PnPRowIdArray lgid = dlm.GetRelatedRowIds("P3dLineGroupPartRelationship", "Part", rowId, "LineGroup");        if (lgid == null || lgid.Count == 0)        {          // line group was not found - for example, if Equipment is picked.          return;        }         // this is line group row in the data. (PnPRowIdArray is in fact list        int lgRowId = lgid.First.Value;             // using lgRowId you can get all line group properties using the following        // last parameter doesn't matter        List vals = dlm.GetAllProperties(lgRowId, false);             // or get the same thing from PnPDatabase via row        PnPRow lgRow = dlm.GetPnPDatabase().GetRow(lgRowId);             // the following code will only work if linegroup has a valid (not empty)         // tag. Expect an exception here if LineGroup is not assigned a tag         try        {          PipeLineGroupData lginfoAtLast = dlm3d.GetLineGroupInfo(lgRowId);        }        catch        {          // get here if line group doesn't have assigned tag        }      }    }