Dynamcally resizing an open Accordion
- by alavers
I have an Accordion and the height of its content can be dynamically resized. I would like to see the Accordion dynamically respond to the child item's height, but I'm having trouble doing this.
<lt:Accordion Name="MyAccordion"
SelectionMode="ZeroOrOne"
HorizontalAlignment="Stretch">
<lt:AccordionItem Name="MyAccordionItem"
Header="MyAccordion"
IsSelected="True"
HorizontalContentAlignment="Stretch"
VerticalAlignment="Stretch">
<StackPanel>
<Button Content="Grow" Click="Grow"/>
<Button Content="Shrink" Click="Shrink"/>
<TextBox Name="GrowTextBox"
Text="GrowTextBox"
Height="400"
Background="Green"
SizeChanged="GrowTextBox_SizeChanged"/>
</StackPanel>
</lt:AccordionItem>
</lt:Accordion>
private void Grow(object sender, System.Windows.RoutedEventArgs e)
{
GrowTextBox.Height += 100;
}
private void Shrink(object sender, System.Windows.RoutedEventArgs e)
{
GrowTextBox.Height -= 100;
}
private void GrowTextBox_SizeChanged(object sender, System.Windows.SizeChangedEventArgs e)
{
MyAccordion.UpdateLayout();
MyAccordionItem.UpdateLayout();
}
Mind you, if I collapse and then re-open the accordion, it takes shape just the way I want, but I'd like this resizing to occur immediately when the child resizes.
I feebly attempted to fix this by adding a SizeChanged event handler that calls UpdateLayout() on the Accordion and AccordionItem, but this doesn't have any visual effect. I can't figure out where proper resizing takes place inside the Accordion control. Does anyone have an idea?
