RedDev

Hello everyone,

I think it can be done doing this:

For the group you must check for collectionchanged. Then you must create a method for update.

 public partial class GroupAction
    {
        protected override void OnLoaded(bool isInitialLoad)
        {
            base.OnLoaded(isInitialLoad);
            ((INotifyCollectionChanged)this.SingleActions).CollectionChanged += (s, e) =>
                {
                    RaisePropertyChanged("TotalCost");
                };
        }


        public void UpdateProperty(string name)
        {
            RaisePropertyChanged(name);
        }

        //[Bindable(true, BindingDirection.TwoWay)]
        [Editable(false)]
        public decimal TotalCost
        {
            get
            {
                return this.SingleActions.Sum(sa => sa.Total);
            }
        }


    }

then call the update method from the child:

  public partial class SingleAction
    {
          
        partial void OnPriceChanged()
        {
            RaisePropertyChanged("Total");

            if (GroupAction != null)
                GroupAction.UpdateProperty("TotalCost");
        }
        partial void  OnQuantChanged()
        {
            RaisePropertyChanged("Total");
            if (GroupAction != null)
                GroupAction.UpdateProperty("TotalCost");
        }

        //[Bindable(true, BindingDirection.TwoWay)]
        [Editable(false)]
        public decimal Total
        {
            get
            {
                return this.Price * this.Quant;
            }
        }

Cheers