Question

我正在尝试更新记录，但不起作用。我已经宣布活动为bool，并且在数据库中它是位。

enter code here

string str = DateTime.Now.ToShortTimeString();   
    var update = db.Logs.Single(u => u.id == id);
     update.logout = str;
     update.active = false;

Answer 1

尝试一下

string str = DateTime.Now.ToShortTimeString(); 

List<Single> results = (from s in in Logs.Single
                        where s.id == id
                        select s).ToList();

foreach (Single s in results)
{
    s.logout = str;
    s.active = false;
}

Answer 2

请尝试这个。

  db.Logs.Where(x => x.id == id).ToList().ForEach(x =>
                    {
                        x.logout = str;
                        x.active = false;
                    });

如何编写更新表集signout = time.now，其中linq中的id = myid

2 个答案: