RichTextBlockOverflow.HasOverflowContent在Windows8Metro应用程序中总是错误的

Question

由于您必须在Windows8MetroApps中支持多个屏幕分辨率，所以我希望拆分我的RichTextBlock以显示在RichTextBlockOverflow控件中将被切断的文本(或多个控件，这取决于我必须显示多少文本)。为了确定是否需要显示一个额外的RichTextBlockOverflow-Control，我检查了我的RichTextBlocks的HasOverflowContent内容-属性。但它总是返回假的。

它非常容易复制：

• 创建一个新的"Windows ->空白应用程序“
• 用以下代码替换MainPage.xaml的xaml：

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然后转到文件后面的代码(MainPage.xaml.cs)，用该代码替换构造函数：

public MainPage()
{
    this.InitializeComponent();
    if (test.HasOverflowContent)
    {
        // Will never be entered
    }
    if (test1.HasOverflowContent)
    {
        // Will never be entered
    }
}

在on this.InitializeComponent()中设置一个断点，并查看HasOverflowContent如何永远不会为真。

我做错了什么？还是.NET中的一个bug？

(如有任何帮助，将不胜感激;)

Andi

Answer 1

尝试使用不同的事件，通过将代码放在Page_Loaded事件中，我能够让HasOverflowContent工作。