6
我試圖通過以下方式來執行的EF更新,但仍收到此錯誤:的的EntityKey屬性只能設置
的的EntityKey屬性只能是當屬性的當前值爲空時設置。
using (hydraEntities db = new hydraEntities())
{
YouUser = db.youusers.Include("address").Include("entity").Include("youusercontacts.contact").Include("youuserlogins").Include("youusernotes.note").Include("youusernotes.youuser.entity").Where(yu => yu.YOUUserId.Equals(YOUUserId)).First();
}
YouUser.entity.FirstName = txtFirstName.Text;
YouUser.entity.LastName = txtLastName.Text;
YouUser.address.AddressLine1 = txtAddressLine1.Text;
YouUser.address.AddressLine2 = txtAddressLine2.Text;
YouUser.address.City = txtCity.Text;
YouUser.address.State = ddlState.SelectedValue;
YouUser.address.Zipcode = txtZipcode.Text;
using (hydraEntities db = new hydraEntities())
{
db.youusers.AddObject(YouUser);
db.ObjectStateManager.ChangeObjectState(YouUser, System.Data.EntityState.Modified);
db.SaveChanges();
}
將不勝感激,我如何能解決這個問題,並執行上面的語句中的任何見解。