贴个Silverlight试试看

<UserControl
 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"
    x:Class="SilverlightApplication1.MainControl"
    mc:Ignorable="d">

 <Grid x:Name="LayoutRoot" Background="White" Height="240" Width="560">
 <Rectangle Stroke="#FF000000" RadiusX="10" RadiusY="10" x:Name="Rect" >
 <Rectangle.Effect>
 <BlurEffect/>
 </Rectangle.Effect>
 <Rectangle.Fill>
 <LinearGradientBrush EndPoint="0.034,1.1" StartPoint="0.403,-0.109">
 <GradientStop Color="#FF000000"/>
 <GradientStop Color="#FFFFFFFF" Offset="1"/>
 </LinearGradientBrush>
 </Rectangle.Fill>
 </Rectangle>
 <TextBlock TextWrapping="Wrap" FontSize="52" Foreground="White" d:LayoutOverrides="Width, Height" TextAlignment="Center" MouseEnter="TextBlock_MouseEnter" x:Name="Txt" MouseLeave="TextBlock_MouseLeave" HorizontalAlignment="Center" VerticalAlignment="Center" Cursor="Hand">
 <TextBlock.Effect>
 <BlurEffect/>
 </TextBlock.Effect><Run Text="菩提树下的杨过"/></TextBlock>

 </Grid>
</UserControl>

using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media.Effects;

namespace SilverlightApplication1
{
 public partial class MainControl : UserControl
    {
 public MainControl()
        {
 
            InitializeComponent();
        }

 private void TextBlock_MouseEnter(object sender, MouseEventArgs e)
        {
 
            DropShadowEffect _Effect = new DropShadowEffect();
            _Effect.BlurRadius = 5;
            _Effect.Direction = 225;
            Txt.Effect = _Effect;
            Rect.Effect = Txt.Effect;
        }

 private void TextBlock_MouseLeave(object sender, MouseEventArgs e)
        {
 
            BlurEffect _Effect = new BlurEffect();
            _Effect.Radius = 5;
            Txt.Effect = _Effect;
            Rect.Effect = Txt.Effect;
        }
    }
}