how to manage two combobox if the items source of one depends on the other ?

[ajoua taha]

Hi,

I have a DataForm in which there are two DataFormComboBoxField, one for the governorate and one for the delegation, and when I select a governorate in the first combo box, the ItemSource the 2nd combobox should contain the list of delagations that  belongs to the selected governorate.

Thanks.

[Ivan Ivanov]

Hello,

I prepared a sample project that illustrates how to achieve this behavior. You can find it attached to my post.

Regards,
Ivan Ivanov
Telerik

[ajoua taha]

hi Ivan,

Thank you for your reply, it was very beneficial, but is there a possibility to do things in view model instead of codebehind.

thank you

[Ivan Ivanov]

Hi,

The suggested approach is purely event driven and it won't be easy to translate the event handlers to ViewModel commands, as class level event handler is used to process RadComboBox.SelectionChangedEvent occurrences. However, you can still remove this code from the view's code behind, by wrapping the logic in an attached behavior class.

Regards,
Ivan Ivanov
Telerik