说明：通过学习Silverlight提供的GridSplitter组件，您应当能掌握重新分配Grid组件中的空间分布，并且能够合理地安排程序中各个组件的位置。
组件所在命名空间：
System.Windows.Controls
组件常用属性：
PreviewStyle：获取或者设置当预览变化时该组件的样式。
ShowsPreview：获取或者设置该组件是否能显示预览。
注意：该组件应当结合Grid组件一起使用，并且使用属性HorizontalAlignment和VerticalAlignment，才能达到重新调整Grid行列宽度的目的。如果使用Expression Blend做界面设计的话，效果会更好（见下图）。
表：
HorizontalAlignment（水平对齐） | VerticalAlignment（垂直对齐） | 结果 |
Stretch | Other | 重新调整Grid行宽 |
Other | Stretch | 重新调整Grid列宽 |
Stretch | Stretch | 如果ActualHeight大于等于ActualWidth，就调整行宽，否则就调整列宽。 |
效果图：
代码段：
MainPage.xaml代码：
<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"
xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows"
mc:Ignorable="d" xmlns:controls1="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"x:Class="SilverlightClient.MainPage"
Width="640" Height="480">
<Grid x:Name="LayoutRoot" Width="640" Height="480" Background="White"ShowGridLines="True">
<Grid ShowGridLines="True" Canvas.Top="60" Canvas.Left="20" Width="400"Height="400">
<Grid.RowDefinitions>行定义 4行-->
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
Grid.RowDefinitions>
<Grid.ColumnDefinitions>列定义 4列-->
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
Grid.ColumnDefinitions>
<controls1:GridSplitter Grid.Row="1" Grid.Column="0"Grid.ColumnSpan="4" Height="8" HorizontalAlignment="Stretch"VerticalAlignment="Top" ShowsPreview="True"/>
<controls1:GridSplitter Grid.Column="1" Grid.RowSpan="4" Width="8"HorizontalAlignment="Left" VerticalAlignment="Stretch" ShowsPreview="True"Height="400"/>
<Ellipse Stroke="Black" Height="100" Grid.Column="1" Grid.Row="1">
<Ellipse.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF1130F6" Offset="0"/>
<GradientStop Color="#FF70B5BB" Offset="1"/>
LinearGradientBrush>
Ellipse.Fill>
Ellipse>
<Ellipse Stroke="Black" VerticalAlignment="Top" Height="100">
<Ellipse.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
LinearGradientBrush>
Ellipse.Fill>
Ellipse>
<Ellipse Stroke="Black" Grid.Column="2" Grid.Row="2">
<Ellipse.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF20C761" Offset="0"/>
<GradientStop Color="#FF3F3163" Offset="1"/>
LinearGradientBrush>
Ellipse.Fill>
Ellipse>
<controls1:GridSplitter Height="8" HorizontalAlignment="Stretch"VerticalAlignment="Top" Grid.ColumnSpan="4" Grid.Row="3"/>
<controls1:GridSplitter HorizontalAlignment="Left" Width="8"Grid.Column="3" Grid.RowSpan="4"/>
<Ellipse Stroke="Black" Grid.Column="3" Grid.Row="3">
<Ellipse.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFF61E0B" Offset="0"/>
<GradientStop Color="#FFC19112" Offset="0.987"/>
LinearGradientBrush>
Ellipse.Fill>
Ellipse>
Grid>
Grid>
UserControl>
MainPage.xaml.cs代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
namespace SilverlightClient
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
}
}