<Window x:Class="Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="UseWrapPanel" Height="224" Width="520">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50*" />
<ColumnDefinition Width="50*" />
</Grid.ColumnDefinitions>
<WrapPanel Background="LightBlue" Margin="4,4,4,4" Name="WrapPanel1" Grid.Column="0" VerticalAlignment="Top">
<Button Height="30" Name="Button1" Width="75">1</Button>
<Button Height="20" Name="Button2" Width="50">2</Button>
<Button Height="40" Name="Button3" Width="50">3</Button>
<Button Height="120" Name="Button4" Width="75">4</Button>
<Button Height="40" Name="Button5" Width="75">5</Button>
<Button Height="30" Name="Button6" Width="60">6</Button>
<Button Height="30" Name="Button7" Width="60">7</Button>
<Button Height="20" Name="Button8" Width="60">8</Button>
<Button Height="40" Name="Button9" Width="50">9</Button>
</WrapPanel>
<WrapPanel Background="Red" Name="WrapPanel2" Grid.Column="1" Margin="4,4,4,4" Grid.ColumnSpan="1" Orientation="Vertical">
<Button Height="30" Name="Button10" Width="75">1</Button>
<Button Height="210" Name="Button11" Width="50">2</Button>
<Button Height="40" Name="Button12" Width="50">3</Button>
<Button Height="20" Name="Button13" Width="75">4</Button>
<Button Height="40" Name="Button14" Width="75">5</Button>
<Button Height="30" Name="Button15" Width="60">6</Button>
<Button Height="30" Name="Button16" Width="60">7</Button>
<Button Height="120" Name="Button17" Width="60">8</Button>
<Button Height="40" Name="Button18" Width="50">9</Button>
</WrapPanel>
</Grid>
</Window>