public virtual void ChangePayer(Payer payer)
{
var oldPayers = Payer;
Payer = payer;
foreach (var user in Users)
{
user.Payer.Users.Remove(user);
user.Payer = payer;
user.Payer.Users.Add(user);
}
payer.UpdatePaymentSum();
oldPayers.UpdatePaymentSum();
}
protected virtual void CommonChangePayer(Action changer, Payer payer)
{
var oldPayers = Payers.ToArray();
Payers.Clear();
Payers.Add(payer);
foreach (var user in Users)
{
user.Payer.Users.Remove(user);
user.Payer = payer;
user.Payer.Users.Add(user);
}
changer();
payer.UpdatePaymentSum();
foreach (var oldPayer in oldPayers)
{
oldPayer.UpdatePaymentSum();
}
}