public static bool UpdateUser_Note(User_Note user_note)
 {
     try
     {
         using (var _context = new SimpleNoteEntities())
         {
             _context.User_Note.AddOrUpdate(user_note);
             _context.SaveChanges();
             return(true);
         }
     }
     catch
     {
         return(false);
     }
 }
 public static bool checkUser_Note(User_Note user_note)
 {
     using (var _context = new SimpleNoteEntities())
     {
         var user_notes = (from u in _context.User_Note
                           where u.ID == user_note.ID
                           where u.Username == user_note.Username
                           select u).SingleOrDefault();
         if (user_notes != null)
         {
             return(true);
         }
         else
         {
             return(false);
         }
     }
 }
 public static bool DeleteUser_Note(User_Note user_note)
 {
     try
     {
         using (var _context = new SimpleNoteEntities())
         {
             var user_notes = (from u in _context.User_Note
                               where u.ID == user_note.ID
                               where u.Username == user_note.Username
                               select u).SingleOrDefault();
             _context.User_Note.Remove(user_notes);
             _context.SaveChanges();
             return(true);
         }
     }
     catch
     {
         return(false);
     }
 }