<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid.RowDefinitions>
<RowDefinition Height="100" />
<RowDefinition Height="Auto" />
<RowDefinition Height="100*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="33*" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="67*" />
</Grid.ColumnDefinitions>
<Button Content="Button No. 1" Grid.Row="0" Grid.Column="0" />
<Button Content="Button No. 2" Grid.Row="1" Grid.Column="0" />
<Button Content="Button No. 3" Grid.Row="2" Grid.Column="0" />
<GridSplitter HorizontalAlignment="Center" Width="6"
Grid.Row="0" Grid.Column="1" Grid.RowSpan="3" />
<Button Content="Button No. 4" Grid.Row="0" Grid.Column="2" />
<Button Content="Button No. 5" Grid.Row="1" Grid.Column="2" />
<Button Content="Button No. 6" Grid.Row="2" Grid.Column="2" />
</Grid>
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