Silverlight:在application.current.host.content.fullscreenchanged事件之后需要

您应该能够通过处理主应用程序窗口的sizeChanged事件来获得正确的大小。如果您明确需要知道应用程序是否正在从全屏模式更改为全屏模式,也许您可以在全屏更改事件处理程序中设置一个标志-例如,一个名为IsFullScreenChanging的bool属性-然后您可以在主窗口上的SizeChanged事件处理程序中检查此属性,执行所需的操作,并在预测下一个全屏更改事件。

反恐精英:

using System.Diagnostics;
using System.Windows;
using System.Windows.Controls;

namespace SilverlightApplication1
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            SizeChanged += MainPageSizeChanged;
        }

        private static void MainPageSizeChanged(object sender, SizeChangedEventArgs e)
        {
            Debug.WriteLine("Size is now " + e.NewSize);
        }

        private void ToggleFullScreenButtonClick(object sender, RoutedEventArgs e)
        {
            Application.Current.Host.Content.IsFullScreen = !Application.Current.Host.Content.IsFullScreen;
        }
    }
}

XAML:

<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"
d:DesignHeight="300" d:DesignWidth="400">


    <Grid x:Name="LayoutRoot" Background="White">
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="79,110,0,0" Name="FullScreenButton" VerticalAlignment="Top" Width="75" Click="ToggleFullScreenButtonClick" />
    </Grid>
</UserControl>

Steve在上述正确回答中给出的简单答案是:

SizeChangedEventArgs.NewSize

(为了方便将来的读者,添加为单独的简明答案…)