Find the shx file used in an Line type (LineTypeTableRecord)

By Virupaksha Aithal
If a line type uses a shx file it will reference an AcDbTextStyleTableRecord. Here is an example that prints the names of the shx file used by the ZIGZAG linetype.

[CommandMethod("getShpName")]
 static public void getShpName()
 {
     Document doc = Application.DocumentManager.MdiActiveDocument;
     Database db = doc.Database;
     Editor ed = doc.Editor;
 
     using (Transaction Tx =
        db.TransactionManager.StartTransaction())
     {
         LinetypeTable tbl =
             (LinetypeTable)Tx.GetObject(db.LinetypeTableId
                                            , OpenMode.ForRead);
         //check for ZigZag.
         if (tbl.Has("ZigZag"))
         {
             LinetypeTableRecord lt = 
                 (LinetypeTableRecord)Tx.GetObject(tbl["ZigZag"], 
                                                   OpenMode.ForRead);
 
             int nDash = lt.NumDashes;
 
             ed.WriteMessage(lt.Name + "n");
 
             for (int i = 0; i < nDash; i++)
             {
                 int iShpNum = lt.ShapeNumberAt(i);
 
                 if (iShpNum != 0)
                 {
                     ObjectId txtId = lt.ShapeStyleAt(i);
                     TextStyleTableRecord txt = 
                         (TextStyleTableRecord)Tx.GetObject(txtId, 
                                                    OpenMode.ForRead);
 
                     ed.WriteMessage("   " + txt.FileName + "n");
                 }
             }
         }
 
         Tx.Commit();
     }
 }