.net Entity Framework更新的问题

[cscsf]

原来Entity Framework更新的方法是：
CADBEntities3 obj = new CADBEntities3();
IEnumerable<ADMINUSER> user = from myuser in obj.ADMINUSER where myuser.USERID == 2 select myuser;
ADMINUSER kkuser = user.First();
kkuser.USERNAME = "test";
obj.SaveChanges();

然后就更新好了


但是由于一些特殊情况，我现在需要把这个流程给改了，改成如下流程：
CADBEntities3 obj = new CADBEntities3();
IEnumerable<ADMINUSER> user = from myuser in obj.ADMINUSER where myuser.USERID == 2 select myuser;
ADMINUSER kkuser = user.First();
kkuser.USERNAME = "test";
mygod();

public void mygod(ADMINUSER kkuser)
{
CADBEntities3 obj = new CADBEntities3();
obj.SaveChanges();
}

就是说修改后，把修改的内容传入一个函数，然后在函数里面完成更新的操作，请问这具体该怎么做呢？多谢。

[Teng_s2000]

Mark

[cxm11]

CADBEntities3 obj = new CADBEntities3();
ADMINUSER user = （ADMINUSER ）（from myuser in obj.ADMINUSER where myuser.USERID == 2 select myuser）.single();
mygod(obj);

public void mygod(CADBEntities3 obj)
{
obj.SaveChanges();
}

这样可以么？没试过。

[Fibona]

public void mygod(ADMINUSER kkuser, CADBEntities3 obj ) 
{ 
        obj.SaveChanges(); 
} 

你传入两个参数就可以了'

[cscsf]

这样是不行的，试过了

[cscsf]

...

这样传入2个参数，不符合多层的设计吧。。。。

[HailRangar]

把要修改的字段值作为参数在
public void mygod（string arg1）
{
CADBEntities3 obj = new CADBEntities3();
IEnumerable <ADMINUSER> user = from myuser in obj.ADMINUSER where myuser.USERID == 2 select myuser;
ADMINUSER kkuser = user.First();
kkuser.USERNAME = arg1;
obj.SaveChanges();

}

[rutyleilei]

public void mygod(ADMINUSER kkuser)
{
CADBEntities3 obj = new CADBEntities3();
obj.ADMINUSER .Attach(kkuser);
obj.Refresh(RefreshMode.KeepCurrentValues, kkuser);
obj.SubmitChanges();
}

[wangyanboq]

rutyleilei正解

[scdn8311]

[Quote=引用 7 楼 rutyleilei 的回复:]
public void mygod(ADMINUSER kkuser)
{
CADBEntities3 obj = new CADBEntities3();
obj.ADMINUSER .Attach(kkuser);
obj.Refresh(RefreshMode.KeepCurrentValues, kkuser);
obj.SubmitChanges();
……
[/Quote]

OK

[幻想的天涯]

学习！

[fanshuyi]

给你个例子：http://www.baoshuiqu.com/contents/12/4657.html