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Ticket T853778
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BarEditItem - ComboBoxEdit in DataTemplate does not display value

created 5 years ago

Hello,
I'm using the ComboBoxEdit in DataTemplate, but it does not display the value.
Is setting of ItemsSource wrong?
I have attached a Sample project.

XAML
<dxb:BarEditItem Content="Item"  
                 EditValue="{Binding CurrentItemId}"  
                 EditValueChanged="{DXEvent Handler='SelectItemEvent(@sender.Content, @args)'}"  
                 IsEnabled="{Binding IsSelectItemEnabled}">  
    <dxb:BarEditItem.EditTemplate>  
        <DataTemplate>  
            <dxe:ComboBoxEdit Name="PART_Editor"  
                              ItemsSource="{Binding ItemList}"  
                              IsTextEditable="False"  
                              DisplayMember="Value"  
                              ValueMember="Id"  
                              PopupOpening="{DXEvent Handler='ClickItemComboBoxEvent()'}"/>  
        </DataTemplate>  
    </dxb:BarEditItem.EditTemplate>  
</dxb:BarEditItem>

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Answers approved by DevExpress Support

created 5 years ago

Hello,

Controls within BarEditItem.EditTemplate don't inherit their DataContext from BarEditItem (you can check this using Live Visual Tree or Snoop). As a result, your ItemsSource property binding does not work. I suggest you bind via the BarItemLinkInfo.Item property, which stores your BarEditItem object:

XAML
<dxe:ComboBoxEdit
    Name="PART_Editor"
    DisplayMember="Value"
    IsTextEditable="False"
    ItemsSource="{Binding Item.DataContext.ItemList, RelativeSource={RelativeSource AncestorType={x:Type dxb:BarItemLinkInfo}}}"
    PopupOpening="{DXEvent Handler='@a($dxb:BarItemLinkInfo).Item.DataContext.ClickItemComboBoxEvent()'}"
    ValueMember="Id" />

Thanks

    Comments (1)
    I I
    Ishikawa 5 years ago

      Thanks, It works.

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