DataForm DataFormComboBoxField SelectionChange Handler

[Gencebay]

Hi,
I compined DataForm and PropertyGrid controls properly but I want to do that handle DataFormComboBoxField change event and as configured DataTemplate like that.

<telerik:RadDataForm Grid.Row="0" x:Name="DataForm1"

                             Header="Actor Basic"

                            AutoGenerateFields="False"

                            ItemsSource="{Binding MyDTO}"

                            ReadOnlyTemplate="{StaticResource MyTemplate}"

                            EditTemplate="{StaticResource MyTemplate}"

                            NewItemTemplate="{StaticResource MyTemplate}"

                            EditEnded="DataForm1_EditEnded" >

<DataTemplate x:Key="MyTemplate">

                <StackPanel>

                    <telerik:DataFormDataField  Label="İsim" DataMemberBinding="{Binding Name, Mode=TwoWay}" />

                    <telerik:DataFormComboBoxField Label="Some Label" SelectedValuePath="ID" DisplayMemberPath="TypeName"

                                DataMemberBinding="{Binding AnotherId, Mode=TwoWay}"

                                ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor,

                                AncestorType={x:Type UserControl}}, Path=DataContext.SomeList}" />

                </StackPanel>

            </DataTemplate>


[Boris]

Hello Gencebay,DataFormComboBoxField does not have a SelectionChanged event itself. In case you need such an event to implement your additional logic, you can handle the SelectionChanged event of its editing element (RadComboBox). For example the code to do so is available bellow:

public MainWindow()
    {
        InitializeComponent();
        this.AddHandler(RadComboBox.SelectionChangedEvent, new System.Windows.Controls.SelectionChangedEventHandler(OnSelectionChanged));
    }

    private void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (e.RemovedItems.Count > 0)
        {
            //your code here
        }
    }

You can see that with the code snippet above I check if there are any items being unselected (through the bt). This ensures that the event will not be handled on the initial loading when a default item has been selected.

I hope this helps.

Regards,
Boris
Telerik

 

 

[Gencebay]

Hello,
Trying add to the RadDataForm a DataTemplateSelector for each template type (Read, Edit etc.) on runtime for specified type to edit!
There is only one EditTemplateSelector for RadDataForm how can we bind right template dynamically?
Thanks

[Dimitrina]

Hello,

You can refer to our online documentation on DataTemplate Selectors.

Regards,
Dimitrina
Telerik