0
我有兩個表tblRole和tblUser。 tblUser有一個與「tblRole」相關的「RoleID」。如何使用ado.net中無法定義兩個對象之間的關係EF
follwing一些主代碼:
tblUserDao userDao = new tblUserDao();
tblRoleDao roleDao = new tblRoleDao();
var usr = userDao.GetUserByID(8);
if (usr != null)
{
usr.RealName = "XXXX";
var role = roleDao.GetRoleByID(4);
usr.tblRole = role;
isSuc = userDao.Updata(usr);
}
public tblUser GetUserByID(int userID)
{
using (TOMSDBEntities tomsEntities = new TOMSDBEntities())
{
var tUser = tomsEntities.tblUser.Include("tblRole").Where(u => u.UserID == userID).FirstOrDefault();
return tUser;
}
}
public bool Updata(tblUser model)
{
using (TOMSDBEntities tomsEntities = new TOMSDBEntities())
{
tomsEntities.GetObjectByKey(model.EntityKey);
tomsEntities.ApplyPropertyChanges(model.EntityKey.EntitySetName, model);
return (tomsEntities.SaveChanges() > 0);
}
}
現在,報告一個錯誤,這是因爲它們連接到不同的ObjectContext對象不能被限定的兩個對象之間的關係。
嗨亞歷山大塔蘭, – Aden 2010-12-23 07:09:35