CODEWITHSUNDEEP
wpfxaml
MTR
MTR

Reputation: 1740

Set Width of Expander to Fill Available Space

I have a Listbox of expander items and want them to fill the whole horizontal space available.

Here is a little example

<Window x:Class="ExpanderTest.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Grid>
    <ListBox>
        <ListBoxItem>
            <Expander Background="Tan" 
                      HorizontalAlignment="Left" Header="My Expander" 
                      ExpandDirection="Down" IsExpanded="True">
                <TextBlock TextWrapping="Wrap">
                    Lorem ipsum dolor sit amet, consectetur
                    adipisicing elit, sed do eiusmod tempor incididunt ut
                    labore et dolore magna aliqua
                </TextBlock>
            </Expander>
        </ListBoxItem>
    </ListBox>
</Grid>

If I set Width="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBox}}, Path=ActualWidth}" on the expander, it behaves almost as I want it to, except that the expander is a little bit too wide.

Is there a way in xaml to tell the ListBoxItem or the Expander to fill all horizontal space available?

(if the width gets smaller, the hight should get larger accordingly to display the whole content)

Upvotes: 0

Views: 2409

Answers (1)

MTR
MTR

Reputation: 1740

ok, I found the solution, just add

ScrollViewer.HorizontalScrollBarVisibility="Disabled"

to the ListBox.

Upvotes: 3

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