public void UpdateContact(Contact c)
{
using (var e = new AdventureWorksEntities())
{
e.Attach(e.Contacts.Single(x => x.ContactID == c.ContactID));
e.ApplyCurrentValues("Contacts", c);
e.SaveChanges();
}
}
public void DeleteContact(Contact c)
{
if (c == null) return;
using (var e = new AdventureWorksEntities())
{
e.Attach(c);
e.DeleteObject(c);
e.SaveChanges();
}
}
static void Main(string[] args)
{
using (var e = new AdventureWorksEntities())
{
var c = e.Contatos.First();
Console.WriteLine(c.EntityState);
e.Attach(c);
Console.WriteLine(c.EntityState);
c.Nome = "Gustavo";
Console.WriteLine(c.EntityState);
e.Detach(c);
Console.WriteLine(c.EntityState);
}
Console.ReadKey();
}