How to call CheckRulesAsync on an EditableList to validate all the items

[adrianwright109]

Hi,

I am using CSLA with Blazor and have successfully managed to create UI edit forms in Blazor for CSLA objects that inherit from BusinessBase<T>

The UI edit components make use of the Csla.Blazor.ViewModel<T> to wrap the model so when I try and save the form I can call CheckRulesAsync() on the Model to update the IsSavable flag and only save if there are no validation errors.

The code I am using looks like this:

        protected async Task TrySave()
        {
            await ((ICheckRules)vm.Model).CheckRulesAsync();

            if (vm.Model.IsSavable)
            {
                await vm.SaveAsync();
            }
        }

I would like to do a similar thing for an EditableList e.g. a class that inherits from Csla.BusinessListBase<T, C>

Using the same Csla.Blazor.ViewModel<T> wrapper approach but using the EditableList as the Model the TrySave() method above works but only if I comment out the call to CheckRulesAsync() otherwise it throws an exception: Specified cast is not valid..

How can I successfully check that all items in the EditableList pass validation rules and are valid to save ?

Update 1 also just noticed that the ModelPropertyChanged on the Csla.Blazor.ViewModel<T> wrapper when the Model is an EditableList doesn't fire when editing a child item. Do I have to raise an event from the child item to the parent EditableList ?

Update 2 also just noticed that when I try to get the PropertyInfo from a boolean IsActive property on child items in the EditableList by using:

Property="@(vm.GetPropertyInfo(() => data.IsActive))"

It seems to get the PropertyInfo like the FriendlyName etc correctly but the Value property is always null.

I am using the EditableList with a Telerik Blazor Grid the EditableList is the grid data model and it produces a grid row for every child object in the list (I have 3 items in the list with boolean IsActive properties set to false, true, true respectively.

When I try and get the PropertyInfo to pass into the CslaSwitch component it returns null as the PropertInfo.Value rather than one of the actual boolean values.

Code I have is:

                <GridColumn Field="@(nameof(ClientEnvironmentUserEdit.Status))" Title="" Width="120px" Filterable="false" Groupable="false">
                    <Template>
                        @{
                            if (context is ClientEnvironmentUserEdit data)
                            {
                                <CslaSwitch TModelProperty="bool" Property="@(vm.GetPropertyInfo(() => data.IsActive))" />
                            }
                        }
                    </Template>
                </GridColumn>