RadComboBox does not display correctly selected item if DisplayMemberPath uses indexer

[Roman]

Hi,

I have problem related with RadComboBox. It does not display correctly selected item if DisplayMemberPath uses indexer.

 Xaml:

<controls:RadComboBox
    ItemsSource="{Binding PersonCollection}"
    SelectedItem="{Binding SelectedPerson, Mode=TwoWay}"
        DisplayMemberPath="[Name]" />

I debugged this situation using .Net Reflector and find out that when SelectedItem is changed the RadComboBox tries to change the Text.

To get value from indexer it is used “BindingExpressionHelper.CreateGetValueFunc” function.

Inside this function there is an attempt to create a method to get the value. During the process of creation of the method the argument exception is thrown and as result swallows exception and uses another one method to get the value.

So the method returns empty string (because it has wrong method to get value) and it is displayed in ComboBox TextBox (instead of proper value).

How can i resolve this behavior?

P.S. System.Windows.Controls.ComboBox works fine with the same conditions.

Thanks to all,

Roman Denysenko

[Valeri Hristov]

Hi Roman,

This is a bug in RadComboBox that will be fixed in the upcoming internal build.

Your points have been updated.

All the best,
Valeri Hristov
the Telerik team

[Roman]

Thank You, Valeri!
New build solves the problem.