private void detatch_Reward(Reward reward)
{
NotifyPropertyChanging("Reward");
reward.Category = null;
NotifyPropertyChanged("Reward");
}
private void detach_Reward(Reward item)
{
NotifyPropertyChanging("Reward");
item.Skill = null;
}
private void attach_Reward(Reward reward)
{
NotifyPropertyChanging("Reward");
reward.Category = this;
NotifyPropertyChanged("Reward");
}
private void attach_Reward(Reward item)
{
NotifyPropertyChanging("Reward");
item.Skill = this;
}