How to place Annotations for Plant3d P&ID objects using C#.NET

// Programmatically create Annotation by Fenton Webb, DevTech, Autodesk 1/5/2012

[CommandMethod("MyCreateAnnotation")]

public void myCreateAnnotation()

{

  // get the AutoCAD Editor object

  Editor ed = AcadApp.DocumentManager.MdiActiveDocument.Editor;

  // select the pnid object to annotate

  PromptEntityResult pnidObjectRes = ed.GetEntity("Pick Object to annotate : ");

  // if something selected

  if (pnidObjectRes.Status == PromptStatus.OK)

  {

    PromptResult annoStyleRes;

    do

    {

      // enter the required annotation style

      PromptStringOptions opts = new PromptStringOptions("Enter Annotation Style or ? to list");

      opts.AllowSpaces = true;

      annoStyleRes = ed.GetString(opts);

      if (annoStyleRes.Status == PromptStatus.OK)

      {

        // check to see if a listing is required

        if (annoStyleRes.StringResult == "?")

        {

          // list the entries in the Autodesk_PNP dict

          using (DBDictionary annoStylesDict = DictionaryUtils.GetAnnotationStylesDictionaryId(ed.Document.Database, 0).Open(OpenMode.ForRead) as DBDictionary)

            foreach(DBDictionaryEntry entry in annoStylesDict)

              ed.WriteMessage("\n" + entry.Key);

        }

      }

    } while (annoStyleRes.Status == PromptStatus.OK && annoStyleRes.StringResult == "?");

 

    // if we have what we think is a valid annotation style

    if (annoStyleRes.Status == PromptStatus.OK)

    {

      // select the point for the annotation

      PromptPointResult pointRes = ed.GetPoint("Pick position of annotation");

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;     // if ok

      if (pointRes.Status == PromptStatus.OK)

      {

        // get the style id from the name input

        ObjectId styleId = PnIDStyleUtils.GetStyleIdFromName(annoStyleRes.StringResult, true);

 

        // now create the annotation object

        Annotation anno = new Annotation();

        // and place it

        anno.Create(pointRes.Value, styleId, pnidObjectRes.ObjectId);

      }

    }

  }    

}