Silverlight TextArea

<UserControl x:Class="TextArea.Page"
xmlns="http://schemas.microsoft.com/client/2007"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:liquid="clr-namespace:Liquid;assembly=Liquid"
Width="400" Height="300">
<Canvas>
<liquid:TextArea x:Name="textarea" Canvas.Top="20" Canvas.Left="20" Width="250" Height="250" TabIndex="1" Text="This is a test!" />
</Canvas>
</UserControl>