Is there a RowSpan="All" in WPF? - wpf

Question

I create a GridSplitter across the 3 rows that I have in my grid like this:
<GridSplitter Grid.Row="0" Grid.Column="1" Background="Yellow"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
Width="Auto" Height="Auto" ResizeDirection="Columns"
Grid.RowSpan="3" ...
However, it's conceivable that I might add another row to my grid at a later stage, and I don't really want to go back and update all of my rowspans.
My first guess was Grid.RowSpan="*", but that doesn't compile.

Answer 1

A simple solution:
<!-- RowSpan == Int32.MaxValue -->
<GridSplitter Grid.Row="0"
Grid.Column="1"
Grid.RowSpan="2147483647" />

Answer 2

You can bind to the RowDefinitions.Count but would need to update the binding when adding rows manually.
Edit: Only semi-manually in fact
Xaml:
<StackPanel Orientation="Vertical">
<Grid Name="GridThing">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Grid.Children>
<Button Content="TopRight" Grid.Row="0" Grid.Column="1"/>
<Button Content="LowerRight" Grid.Row="1" Grid.Column="1"/>
<Button Content="Span Rows" Name="BSpan" Grid.RowSpan="{Binding RelativeSource={RelativeSource AncestorType=Grid}, Path=RowDefinitions.Count, Mode=OneWay}"/>
</Grid.Children>
</Grid>
<Button Click="Button_Click" Content="Add Row" />
</StackPanel>
Code:
private void Button_Click(object sender, RoutedEventArgs e)
{
GridThing.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(20) });
foreach (FrameworkElement child in GridThing.Children)
{
BindingExpression exp = child.GetBindingExpression(Grid.RowSpanProperty);
if (exp != null)
{
exp.UpdateTarget();
}
}
}

Answer 3

The Grid control provides nothing like this out of the box. It's conceivable that you could implement a MarkupExtension or some other trickery to enable this.