public VLLibraryColumn UpdateLibraryQuestionColumn(VLLibraryColumn column) { if (column == null) { throw new ArgumentNullException("column"); } column.ValidateInstance(); //διαβάζουμε το option απο την βάση μας: var existingItem = LibrariesDal.GetLibraryColumnById(AccessTokenId, column.Question, column.ColumnId, column.TextsLanguage); if (existingItem == null) { throw new VLException(SR.GetString(SR.There_is_no_item_with_id, "Column", column.ColumnId)); } existingItem.ColumnText = column.ColumnText; return(LibrariesDal.UpdateLibraryColumn(AccessTokenId, existingItem)); }