NewItemTemplate Commit event

[peter]

I have a form which has two templates the edittemplate and the newitemtemplate. I also have the "Ok" button displaying. My problem is that this "OK" button seems to be wired up to the EditEnded event, how can i wire it up to the AddedNewItem event when the newitemtemplate is the template being displayed?

[Maya]

Hi Peter,

Generally, the 'Ok' button executes commit edit command. Would you clarify what is the exact scenario that you want to achieve when inserting new item ? Do you want to execute similar command once a new item is about to be added or when its fields are updated and it is inserted in the data source collection ? 
  

Kind regards,
Maya
the Telerik team

[peter]

Hi Maya,

I was hoping that when the edittemplate is displayed the "OK" button would trigger the editended event, and when the newitemtemplate is displayed the "OK" button would trigger the AddedNewItem event due to the fact I need to add new data to the database.

To give some context, i have wired the events to trigger some mvvm commands and at the moment both situations trigger the editended.

[Maya]

Hello Peter,

This would be the expected behavior since in both cases (when editing an item and when adding a new one) the edit is ended and the corresponding event is fired. Actually, there is not AddedNewItem event supported by RadDataForm, only AddingNewItem is available for the time being. 
What I could suggest is to work with the EditEnded event and verify whether the current item is a new one just inserted in the collection or not. 
What is the data source collection you are working with ? 
 

Greetings,
Maya
the Telerik team

[Art Kedzierski]

And how would one go about determining if the current item was just added to the ObservableCollection? And I'm using MVVM with WCF RIA services just to complicate things. Here's my current code which only handles changes to existing items:

<telerik:RadDataForm x:Name="locationDetail"
                        ItemsSource="{Binding Locations}"
                        CurrentItem="{Binding SelectedLocation, Mode=TwoWay}"
                        Grid.Column="1"
                        Grid.Row="1"
                        AutoGenerateFields="False"
                        EditTemplate="{StaticResource LocationEditItem}"
                        NewItemTemplate="{StaticResource LocationEditItem}"
                        ReadOnlyTemplate="{StaticResource LocationReadItem}"
                        Margin="-1,0,0,0"
                        CommandButtonsVisibility="Add, Edit, Navigation, Commit, Cancel">
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="EditEnded">
            <ei:CallMethodAction TargetObject="{Binding}"
                                    MethodName="SaveLocation"/>
        </i:EventTrigger>
    </i:Interaction.Triggers>
</telerik:RadDataForm>

public void SaveLocation()
{
    if (RepositoryFactory.Instance.Service.HasChanges == false)
    {
        return;
    }
    RepositoryFactory.Instance.Service.SubmitChanges(this.SubmitOperationCompleted, null);
}

[Maya]

Hello Peter,

Actually, I discovered a mistake in my answer - there is AddedNewItem event that is thrown right after AddingNewItem event. If you want to check whether committing an edit is performed on the new item, you can try to perform a check similar to:

private void dataForm_EditEnding(object sender, Telerik.Windows.Controls.Data.DataForm.EditEndingEventArgs e)
        {
            if (this.dataForm.Mode == Telerik.Windows.Controls.Data.DataForm.RadDataFormMode.AddNew && e.EditAction == Telerik.Windows.Controls.Data.DataForm.EditAction.Commit)
            {
            }
        }

Will that work for you ?  

Regards,
Maya
Telerik

[Art Kedzierski]

How would you do that in a ViewModel and not code-behind? A ViewModel should have no knowledge of the view so this.dataForm.Mode is invalid.

[Maya]

Hello Peter,

If your collection is IEditableCollectionView for example, you will have all the information required. Check out this article for a reference. 

Regards,
Maya
Telerik