Xml格式的数据到gridview.net c#

我有描述元素的xml文件，描述很长，我如何在gridview中将它们显示为格式化文本。我尝试在描述中添加<br/>标签，但asp.net页面不显示它们。

我有一个结构名FileItems在描述字符串中，所以我将数据从xml保存到这里，

FileItems.AppDescription = xmlNode.ChildNodes[i].InnerText;

在.aspx端，我使用下面的代码显示:

<asp:BoundField DataField="AppDescription" HeaderText="AppDescription" 
        SortExpression="AppDescription">
        <ItemStyle Width="55%"></ItemStyle>
    </asp:BoundField>

XML文件中的示例文本，

<description>
1. Lorem Ipsum is simply dummy text of the printing and typesetting industry.
2. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s.
3. When an unknown printer took a galley of type and scrambled it to make a type specimen book.
4. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged.
</description>