private void Subscription_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "SubscriptionCountExcercise" ||
e.PropertyName == "SubscriptionPrice" ||
e.PropertyName == "SubscriptionDate"
)
{
if (!IsDataChanged)
{
return;
}
if (clientManager.CheckChanges() == true)
{
IsDataChanged = false;
}
}
}