处理XMLSerializer类的事件

using System;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml.Serialization;
using System.IO;

public partial class Default4 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string xmlFilePath = @"c:\Data\Category.xml";
        XmlSerializer serializer = new XmlSerializer(typeof(Category));
        serializer.UnknownElement += new XmlElementEventHandler(XmlSerializer_UnknownElement);//定义事件处理委托
        TextReader reader = new StreamReader(xmlFilePath);

        Category categoryObj = (Category)serializer.Deserialize(reader);
        reader.Close();

        Response.Write("CategoryID: " + categoryObj.CategoryID + "<br/>");
        Response.Write("CategoryName: " + categoryObj.CategoryName + "<br/>");
        Response.Write("Description: " + categoryObj.Description + "<br/>");
    }
    /// <summary>
    /// Handles the UnknownElement event of the XmlSerializer control.
    /// </summary>
    /// <param name="sender">The source of the event.</param>
    /// <param name="e">The <see cref="System.Xml.Serialization.XmlElementEventArgs"/> instance containing the event data.</param>
    void XmlSerializer_UnknownElement(object sender, XmlElementEventArgs e)
    {
        Response.Write("Unknown Element:" + "<br/>");
        Response.Write("Unknown Element Name: " + e.Element.Name + "<br/>");
        Response.Write("Unknown Element Value: " + e.Element.InnerText + "<br/>");
    }
}