public static bool DeleteBookType(string jsonStr) { BookType bt = null; try { JavaScriptSerializer js = new JavaScriptSerializer(); bt = js.Deserialize <BookType>(jsonStr); if (bt.borrowDay > 0) { return(bt != null?BookCatologManger.DeletebookType(bt, bt.borrowDay) : false); } return(bt != null?BookCatologManger.DeletebookType(bt) : false); //return bt; } catch (Exception) { return(false); } }