C# 关于在ContentDialogResult中换行文本winphone 8.1 RT

我有一个长字符串，在ContentDialogResult中显示为

var dlg = new ContentDialog()
        {
            Title = sTitle,
            Content = "This is very long string and i want wrap it but it only appear in 1 line on content of ContentDialogResult. Please help me!",
            PrimaryButtonText = sTextBtnMain,
            SecondaryButtonText = sTextBtnSub
        };

但它只显示在一行上，没有包装。如何在没有ContentDialogResult自定义xaml的情况下将其包装

谢谢大家的支持

接受任何对象作为标题和内容属性。所以，创建、添加属性并将其传递给内容，而不是字符串对象。它会起作用的

        TextBlock txtBlock = new TextBlock();
        txtBlock.Text = "This is very long string and i want wrap it but it only appear in 1 line on content of ContentDialogResult. Please help me!";
        txtBlock.TextWrapping = TextWrapping.Wrap;

        ContentDialog dialog = new ContentDialog()
        {
             Title = sTitle,
             Content = txtBlock,
             PrimaryButtonText = sTextBtnMain,
             SecondaryButtonText = sTextBtnSub
        };

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只需查看ContentDialog的MSDN库中的示例代码。注意TextBlock的用法。@HansPassant你能准确地告诉我吗，我发现它显示的是自定义的xaml