/// <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();
}
}
