Arrange the children for Grid
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Title="About WPF" Background="OrangeRed"> <Grid Background="LightBlue"> <!-- Define four rows: --> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition/> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <!-- Define two columns: --> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Label Grid.Row="0" Grid.Column="0" Background="Blue" Foreground="White" HorizontalContentAlignment="Center" Grid.ColumnSpan="2">Start Page</Label> <GroupBox Grid.Row="1" Grid.Column="0" Background="White" Header="Recent Projects">...</GroupBox> <GroupBox Grid.Row="2" Grid.Column="0" Background="White" Header="Getting Started">...</GroupBox> <GroupBox Grid.Row="3" Grid.Column="0" Background="White" Header="Headlines">...</GroupBox> <GroupBox Grid.Row="1" Grid.Column="1" Background="White" Header="Online Articles" Grid.RowSpan="3"> <ListBox> <ListBoxItem>Article #1</ListBoxItem> <ListBoxItem>Article #2</ListBoxItem> <ListBoxItem>Article #3</ListBoxItem> <ListBoxItem>Article #4</ListBoxItem> </ListBox> </GroupBox> </Grid> </Window>