Sets the maker symbol name

setMarkerSymbolName

public bool setSymbolStyle(Autodesk.AutoCAD.DatabaseServices.ObjectId msId, string symbolName)
        {
            Autodesk.AutoCAD.ApplicationServices.Document acadDoc =
                Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Autodesk.Civil.ApplicationServices.CivilDocument civilDoc =
                Autodesk.Civil.ApplicationServices.CivilApplication.ActiveDocument;
            using (Autodesk.AutoCAD.DatabaseServices.Transaction trans = acadDoc.Database.TransactionManager.StartTransaction())
            {

                Autodesk.AutoCAD.DatabaseServices.ObjectId bTId = acadDoc.Database.BlockTableId;
                Autodesk.AutoCAD.DatabaseServices.BlockTable bT = bTId.GetObject(Autodesk.AutoCAD.DatabaseServices.OpenMode.ForRead) as Autodesk.AutoCAD.DatabaseServices.BlockTable;
                bool blockNameExist = false;
                foreach (Autodesk.AutoCAD.DatabaseServices.ObjectId btrId in bT)
                {
                    Autodesk.AutoCAD.DatabaseServices.BlockTableRecord btr = btrId.GetObject(Autodesk.AutoCAD.DatabaseServices.OpenMode.ForRead) as Autodesk.AutoCAD.DatabaseServices.BlockTableRecord;
                    
                    if (btr.Name == symbolName)
                    {
                        blockNameExist = true;
                    }
                }
                if (blockNameExist)
                {
                    Autodesk.Civil.DatabaseServices.Styles.MarkerStyle ms =
                        msId.GetObject(OpenMode.ForWrite) as Autodesk.Civil.DatabaseServices.Styles.MarkerStyle;
                    ms.MarkerSymbolName = symbolName;
                    trans.Commit();
                }
                else
                {
                    Autodesk.AutoCAD.EditorInput.Editor edr = acadDoc.Editor;
                    edr.WriteMessage("Block " + symbolName + " was not found in the drawing please insert the block.");
                }
                return blockNameExist;
            }
        }