Grid with Column Definition and Row definition
<UserControl x:Class='SilverlightApplication3.MainPage' xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' xmlns:d='http://schemas.microsoft.com/expression/blend/2008' xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' mc:Ignorable='d' d:DesignWidth='640' d:DesignHeight='480'> <Grid Background="AliceBlue"> <Grid.ColumnDefinitions> <ColumnDefinition MinWidth="100" MaxWidth="200" /> <ColumnDefinition MaxWidth="100" /> <ColumnDefinition Width="50" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="50" /> <RowDefinition MinHeight="100" /> <RowDefinition /> </Grid.RowDefinitions> <Ellipse Grid.Row="0" Grid.Column="0" Fill="BlanchedAlmond" Stroke="Black" /> <Ellipse Grid.Row="0" Grid.Column="1" Fill="BurlyWood" Stroke="Black" /> <Ellipse Grid.Row="2" Grid.Column="0" Fill="BlanchedAlmond" Stroke="Black" /> <Ellipse Grid.Row="2" Grid.Column="1" Fill="Red" Stroke="Black" /> <Ellipse Grid.Row="2" Grid.Column="2" Fill="BlanchedAlmond" Stroke="Black" /> <Ellipse Grid.Row="2" Grid.Column="3" Fill="BurlyWood" Stroke="Black" /> <Ellipse Grid.Row="2" Grid.Column="2" Grid.ColumnSpan="2" Fill="Gold" Stroke="Black" Height="50"/> </Grid> </UserControl>