直接给码:
代码语言：javascript复制<UserControl x:Class="SilverlightApplication1.MainPage"
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"
mc:Ignorable="d"
Width="640" Height="300">
<Grid x:Name="LayoutRoot" Background="LightBlue">
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition Height="Auto" MinHeight="30"></RowDefinition>
</Grid.RowDefinitions>
<ScrollViewer Name="sv" VerticalScrollBarVisibility="Visible" LostMouseCapture="sv_LostMouseCapture">
<Border Background="Azure" BorderBrush="Black" Margin="5" BorderThickness="1" Height="400"></Border>
</ScrollViewer>
<StackPanel Grid.Row="1" VerticalAlignment="Center" Orientation="Horizontal" HorizontalAlignment="Center">
<Button Content="Test" Click="Button_Click" HorizontalAlignment="Center" Padding="10,0"></Button>
<TextBlock x:Name="tb1" Margin="10,0,0,0"></TextBlock>
</StackPanel>
</Grid>
</UserControl>cs部分：
代码语言：javascript复制using System.Windows;
using System.Windows.Controls;
namespace SilverlightApplication1
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
ShowHeight();
}
private void sv_LostMouseCapture(object sender, System.Windows.Input.MouseEventArgs e)
{
ShowHeight();
}
void ShowHeight()
{
tb1.Text = string.Format("ActualHeight:{0},VerticalOffset:{1},ViewportHeight:{2},ExtentHeight:{3}", sv.ActualHeight, sv.VerticalOffset, sv.ViewportHeight, sv.ExtentHeight);
}
}
}运行结果截图：（已经在图上直接加了注释）
注：ExtentHeight只能在LostMouseCapture事件中才能正确获得。
