反序列问题?

Question

     微软Url重写源码         
        public object Create(object parent, object configContext, System.Xml.XmlNode section) 
{
// Create an instance of XmlSerializer based on the RewriterConfiguration type...
XmlSerializer ser = new XmlSerializer(typeof(RewriterConfiguration)); // Return the Deserialized object from the Web.config XML
return ser.Deserialize(new XmlNodeReader(section.SelectSingleNode("test")));
}          webconfig
             <RewriterConfig>
    <Rules>
      <RewriterRule>
        <LookFor>/Company/([\w]*)[/]{1,}([\w]*\.html)</LookFor>
        <SendTo>/Company/index.aspx?Id={1}</SendTo>
      </RewriterRule>
     <RewriterRule2>
        <LookFor>/Company/([\w]*)[/]{1,}([\w]*\.html)</LookFor>
        <SendTo>/Company/index.aspx?Id={1}</SendTo>
      </RewriterRule2>
     </Rules>
  </RewriterConfig>我只需要RewriterRule2的内容，用section.SelectSingleNode("RewriterRule2"))反序列时就出错．{"不应有 <RewriterRule2 xmlns=''>。"}这样的提示请问如何解决

Answer 1

第三个参数System.Xml.XmlNode section 你传的是什么?

Answer 2

继承IConfigurationSectionHandler 
public class RewriterConfigSerializerSectionHandler : IConfigurationSectionHandler 
{
/// <summary>
/// Creates an instance of the <see cref="RewriterConfiguration"/> class.
/// </summary>
/// <res>Uses XML Serialization to deserialize the XML in the Web.config file into an
/// <see cref="RewriterConfiguration"/> instance.</res>
/// <returns>An instance of the <see cref="RewriterConfiguration"/> class.</returns>
public object Create(object parent, object configContext, System.Xml.XmlNode section) 
{
// Create an instance of XmlSerializer based on the RewriterConfiguration type...
XmlSerializer ser = new XmlSerializer(typeof(RewriterConfiguration)); // Return the Deserialized object from the Web.config XML
            return ser.Deserialize(new XmlNodeReader(section));
} }

Answer 3

使用XML序列化
    在.NET框架里利用内置的XML序列化方法相对较为容易。你只需要熟悉一些类和属性就可以开始使用简单的XML序列化了：System.Xml.Serialization命名空间：含有使用XML序列化所需要的类和功能。这个命名空间应该被放在使用XML序列化的类的顶部的一个“using”命令里。
XmlSerializer类：提供将对象序列化和反序列化的功能。
XmlIgnore属性：告诉XmlSerializer类跳过你不希望序列化的成员。//这个属性只有通过 构造函数传参数才会有作用Class3
[Serializable()]
    public class Class2
    {
        private string _userName = string.Empty;
        public string UserName
        {
            get
            {
                return _userName;
            }
            set
            {
                _userName = value;
            }
        }
        public Class3 vv;    }[Serializable]
    public class Class3
    {
        private string _kk=String.Empty;        [XmlIgnore]private string _Description=String.Empty;
        public string kk
        {
            set
            {
                _kk = value;
            }
            get
            {
                return _kk;
            }
        }
        public string Description
        {
            set
            {
                _Description = value;
            }
            get
            {
                return _Description;
            }
        }        //public string Description
        //{
        //    set
        //    {
        //        _Description = value;
        //    }
        //    get
        //    {
        //        return _Description;
        //    }
        //}
        public Class3() { }
        public Class3(string d)
        {
            _Description = d;
        }
这样跳过你不希望序列化的成员
   
    }Class2 cls = new Class2();
            cls.UserName = "xingming!";
            cls.vv = new Class3();
            cls.vv.kk = "lovelove";
            cls.vv.Description = "miaoshu";
     
            XmlSerializer xs = new XmlSerializer(typeof(Class2));
            Stream stream = new FileStream("f:\\1.xml", FileMode.Create, FileAccess.Write, FileShare.ReadWrite);
            xs.Serialize(stream, cls);
            stream.Close();XmlSerializer xs = new XmlSerializer(typeof(Class2));
            Stream stream = new FileStream("f:\\1.xml", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            Class2 p = (Class2)xs.Deserialize(stream);
            MessageBox.Show(p.UserName.ToString());