[Solved] Silverlight 4, MVVM binding: Add Empty line in RadComboBox

[qwer]

Hi There,
     I'm using Silver4 with MVVM, no codebehine and directly binding by ViewModel.
How can I add Empty (blank) line in my radcombobox. So user can select that empty value while they don't have that particular information.
I bind like following.

 

  <telerik:RadComboBox Grid.Column="1"  Grid.Row="3"

                             HorizontalAlignment="Left"
                             VerticalAlignment="Top"
                             ItemsSource="{Binding Path=NameSuffixs, Mode=OneWay, NotifyOnValidationError=True,ValidatesOnExceptions=True, ValidatesOnDataErrors=True}"
                             SelectedValue="{Binding Path=Member.NameSuffixId, Mode=TwoWay}"
                             DisplayMemberPath="Description"
                             SelectedValuePath="SuffixId"
/>

I want to add blank(empty) value line in that binding.
Thanks.

[Valeri Hristov]

Hello qwer,

RadComboBox always displays only the items in its ItemsSource, it cannot add items automatically. You should either add the "empty" item in your ViewModel, or enable the Clear button in RadComboBox:
http://www.telerik.com/help/silverlight/radcombobox-features-clearselectionbutton.html

Best wishes,
Valeri Hristov
the Telerik team