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Devin
660
Red Border Lost on Tab Changed
posted

I have the exact same problem as the person in this post http://community.infragistics.com/forums/p/48373/257041.aspx

This posts states:

I have several XamTextEditor/XamComboEditor controls in a TabItemEx. Their values are binded to an object, like this: SelectedItem="{Binding Path=Status, UpdateSourceTrigger=LostFocus, ValidatesOnDataErrors=True}"

The object implements IDataErrorInfo. When the property has an error the control is surrounded by a thin red border. When I activate another tab and then go back to the tab with control with the error the border is gone. Even though object still has an error.

Any ideas?

With a reply of...

I found a work around, I surrounded the control with <AdornerDecorator> tag and the border stays.

I just want to know if there is a better way to do this. I have over 4,000 xamEditors to implement over the next few years and don't feel like wrapping every one of them in an AdornedDecorator.

Thank You

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  • 54937
    Verified Answer
    Offline posted

    You don't have to put an AdornerDecorator around each control - just within the Content of the TabItem. Adorners are managed by the WPF framework and are provided by 1 of 2 elements - a ScrollContentPresenter (i.e. from a ScrollViewer) and an AdornerDecorator. When you change tabs the elements are being unloaded since a tabcontrol only keeps the content of the selected tab item in the visual tree. When the elements are unloaded the wpf framework removes the adorners.

    <TabItem Header="Home">
       <AdornerDecorator>
         <Grid>...or what ever is in the tab</Grid>
       </AdornerDecorator>
    </TabItem>

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