/// <summary> /// 添加班级 /// </summary> /// <param name="cls">班级</param> /// <returns></returns> public bool AddClass(Classes cls) { if (cls == null) { throw new Exception("班级不能为Null"); } _db.Classes.Add(cls); var result = _db.SaveChanges(); return(result > 0); }
private static void AddCls(TestManageDBContext db) { var cls = new Classes { ClassName = "班级二", Memo = "第二" }; db.Classes.Add(cls); db.SaveChanges(); }
private static void ModifyCls(TestManageDBContext db) { var cls = db.Classes.SingleOrDefault(s => s.Id == 2); if (cls != null) { cls.Memo = "二班人很多1111111"; db.SaveChanges(); } }
private static void RemoveCls(TestManageDBContext db) { var cls = db.Classes.SingleOrDefault(s => s.Id == 2); if (cls != null) { db.Classes.Remove(cls); db.SaveChanges(); } }