Question

我有成员:

private static WeightScaleEntities m_WeightScaleEntities = new WeightScaleEntities();

This member holdes my data base. This member contain User_Activity table I want to delete rows from that table by given id.

我删除以下几句:

var deleteUserActivities = from details in m_WeightScaleEntities.User_Activity
                           where details.Id == i_UserActivityId
                           select details;

Now, i want to delete this rows from the data base table. How?

Answer 1

问询后需要做些什么:

foreach (var item in deleteUserActivities)
{
     m_WeightScaleEntities.DeleteObject(item);
}
And then SaveChanges() on the object context.

Answer 2

User_Activity.DeleteAllOnSubmit(deleteUserActivities);
contextName.SubmitChanges();

使用上述法典。将背景名称改为贵国数据库背景物体的名称。

Answer 3

很显然,你的电灯类并非数据内容。

因此,你需要在本类别中增加一个删除方法,并落实数据内容。删除。

或者说,或许你的力量能够执行像GetContext这样的东西,或者具有公开的氛围。

底层:与贵族发展商交谈,并在那里执行。

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