XAML TextBlock: How to make TextBlock have variable height? - wpf

Question

I have a ListBox that contains TextBlocks.
Sometimes the content of a TextBlock is too long and I want the height of this entry to double or triple as needed to accommodate the text.
I tried TextWrapping="Wrap" but it doesn't work. Every TextBlock is still just one line in height.
Is there an easy way to fix the problem in XAML? Thanks.
* Additional info: I tried to simplify the question but perhaps the complete scenario is better.
I have a listbox whose entries are displayed according to a template in code below.
Each entry has 2 pieces of info: a product price followed by product name.
I don't want to use the horizontal scrollbar in the listbox and want the product name to be displayed in 2 or more lines if necessary. The product name is the 2nd TextBlock.
Here's my XAML:
<ListBox Name="listBox1" ItemsSource="{Binding}" Margin="10" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock MinWidth="40" TextAlignment="Right" Text = "{Binding ProductPrice}" />
<TextBlock Text = "{Binding ProductName}" TextWrapping="Wrap" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>

Answer 1

Disable the listbox horizontal scrollViewer. This way the textBlock will be forced to wrap.
XAML:
<ListBox ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<TextBlock TextWrapping="Wrap"/>
</ListBox>
Example result:
Edit:
From the XAML you added I'm confident that the problem lays in the StackPanel.
Try replacing it with Grid for example:
<ListBox Name="listBox1" ItemsSource="{Binding}" Margin="10" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock MinWidth="40" TextAlignment="Right" Text = "{Binding ProductPrice}" />
<TextBlock Grid.Column="1" Text = "{Binding ProductName}" TextWrapping="Wrap" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
StackPanel doesn't limit the content size, therefore the textBlock doesn't knows where the space ends , and the wrapping doesn't happens.

Answer 2

You are using StackPanel. Try using DockPanel:
<DockPanel>
<TextBlock DockPanel.Dock="Left" MinWidth ="40" TextAlignment="Right" Text = "11.12" />
<TextBlock Text = "{Binding LongText}" DockPanel.Dock="Right" TextWrapping="Wrap" />
</DockPanel>
For Example:

Answer 3

this will help you do that. Dont Size the TextBlock just size the scroll viewer because texblock needs to be variable so ScrollViewer will apply Scrollbar once it goes beyond the size of ScrollViewer .
<ScrollViewer HorizontalScrollBarVisibility="Auto"
VerticalScrollBarVisibility="Auto">
<TextBlock/>
</ScrollViewer>
For ListBoxItem
<ListBox ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.Items>
<TextBlock Text="{Binding LongText}" TextWrapping="Wrap"/>
</ListBox.Items>
</ListBox>