使silverlight适应IE窗口大小的方法

    Pete Brown在它的BLOG中提到了一个按自定义比例使用silverlight适应IE窗口大小的方法

    原文如下：How to Resize a Silverlight 2 App and Keep the Same Aspect Ratio                

    其核心代码如下（Xaml）：

<UserControl x:Class="PeteBrown.SilverlightScalingExample.Page"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    >
   
    <Grid x:Name="LayoutRoot"
          Background="Cornsilk" ShowGridLines="True"
          Width="400" Height="300"
          RenderTransformOrigin="0.5 0.5">
       
        <Grid.RenderTransform>
            <ScaleTransform x:Name="PageScale" ScaleX="1" ScaleY="1"/>
        </Grid.RenderTransform>
       
…
    </Grid>
</UserControl>

public partial class Page : UserControl
{
    // this is the aspect ratio we want to maintain
    // you can specify this all sorts of ways, but the
    // easiest is to take the original size and divide
    // X by Y (4:3 or 1.333 in this case)
    private const double _originalWidth = 400;
    private const double _originalHeight = 300;
    private const double _originalAspectRatio =
        _originalWidth / _originalHeight;

    public Page()
    {
        InitializeComponent();

        // wire up the event handler. This is a great addition
        // to silverlight, as you used to have to hook into the
        // browser event yourself
        SizeChanged += new SizeChangedEventHandler(Page_SizeChanged);
    }

    void Page_SizeChanged(object sender, SizeChangedEventArgs e)
    {
        if (e.NewSize.Width < _originalWidth ||
            e.NewSize.Height < _originalHeight)
        {
            // don't shrink
            PageScale.ScaleX = 1.0;
            PageScale.ScaleY = 1.0;
        }
        else
        {
            // resize keeping aspect ratio the same
            if (e.NewSize.Width / e.NewSize.Height > _originalAspectRatio)
            {
                // height is our constraining property
                PageScale.ScaleY = e.NewSize.Height / _originalHeight;
                PageScale.ScaleX = PageScale.ScaleY;
            }
            else
            {
                // either width is our constraining property, or the user
                // managed to nail our aspect ratio perfectly.
                PageScale.ScaleX = e.NewSize.Width / _originalWidth;
                PageScale.ScaleY = PageScale.ScaleX;
            }
        }
    }
}

    这是一个很有用的小技巧，所以在这里做一个记号，看看将来是否能用得上:)