1) EntityCollection<T>.AddNew() sets IsNewViaDataBinding = true

2) CancelEdit removes Entities from their parent collection where IsNewViaDataBinding = true

So the New child entities which I lovingly created using AddNew way before it got anywhere near a grid are now being deleted each time I press ESC in the grid.

I can't follow how, where or why _editCycleInProgress/_pendingCancelEdit get used but why is AddNew on a plain EntityCollectionBase2 making the assumption it is being called via databinding?

Surely databinding would only arrive in AddNew via an EntityView2 in which case EntityView2 could have had its own special internal method which does the same then sets that flag?

I could use Add instead of AddNew but I override AddNew so that I can call a custom UseDefaultValuesForNewEntity() method.

Adapter; v3.5.12.0330;

AddNew is for databinding purposes (ref...), so that behavior is expected.

simmotech wrote:

I could use Add instead of AddNew but I override AddNew so that I can call a custom UseDefaultValuesForNewEntity() method.

What exactly are you doing in UseDefaultValuesForNewEntity, and where it's called? Maybe it could be a workaround using .Add instead.

AddNew is for databinding purposes (ref...), so that behavior is expected.

Well not by me.

IBindingList.AddNew() sure but not a public method. Anyway, it is what it is, I will add a CreateNew() method that calls AddNew then resets the flag by reflection.

UseDefaultValuesForNewEntity, I use this to put in default values for non-nullable fields:

        public virtual void UseDefaultValuesForNewEntity()
        {
            if (!IsNew) return;

            foreach(var field in Fields)
            {
                if (!field.IsChanged && !field.IsNullable && !field.IsPrimaryKey && !field.IsReadOnly)
                {
                    field.CurrentValue = TypeDefaultValue.GetDefaultValue(field.RealDataType);

                    Fields.IsDirty = true;
                }
            }
        }