private void button_Click(object sender, RoutedEventArgs e)
{
rentcarEntities db = new rentcarEntities();
Users us = db.Users.Find(SecurityContext.idClient);
us.Name = Name.Text;
us.MiddlName = MiddlName.Text;
us.SecondName = SecondName.Text;
us.PhoneNumber = Phone.Text;
us.Login = Login.Text;
us.Password = Password.Text;
db.Users.Create();
db.SaveChanges();
ClientList re = new ClientList();
this.Hide();
re.Show();
}