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Expander
This is a migrated thread and some comments may be shown as answers.
Xaria D
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Xaria D asked on 10 Aug 2010, 07:31 AM
I have a Rad Expander inside a RadPane.
I wish to expand or resize the width of the pane when the expander is expanded and likewise, reduce the width when expander is collapsed.
How to get the desired behavior?

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Xaria D
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answered on 11 Aug 2010, 03:55 AM
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Miroslav
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answered on 13 Aug 2010, 08:02 AM
Hi Xaria D,

Is it a floating / undocked pane?

Then you can use this code:

static MainWindow()
{
    EventManager.RegisterClassHandler(typeof(RadPane), 
        RadExpander.CollapsedEvent, new RoutedEventHandler(OnExpanderToggled));
    EventManager.RegisterClassHandler(typeof(RadPane), 
        RadExpander.ExpandedEvent, new RoutedEventHandler(OnExpanderToggled));
}
  
private static void OnExpanderToggled(object sender, RoutedEventArgs e)
{
    var pane = sender as RadPane;
    var window = pane.GetVisualParent<ToolWindow>();
  
    if (window != null
        && (pane.IsFloating || pane.IsFloatingOnly))
    {
        window.ClearValue(Control.HeightProperty);
    }
}

Whenever an expander in the content is toggled, the height would size to the desired size of the content.

Regards,
Miroslav
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Xaria D
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Xaria D
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Miroslav
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