读取XML新闻

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Xml;



public class ReadXmlNews
{
    protected string Url = "";
    protected int amount;

    构造函数#region 构造函数
    public ReadXmlNews()
    {
        Url = "";
    }
    #endregion

    封装字段#region 封装字段
    /**//// <summary>
    /// 一共的记录条数
    /// </summary>
    public int AmountLines
    {
        get { return amount; }
        set { amount = value; }
    }
    /**//// <summary>
    /// 新闻地址
    /// </summary>
    public string NewsUrl
    {
        get { return Url; }
    }
    #endregion

    查询出XML文件中所有的新闻信息#region 查询出XML文件中所有的新闻信息
    /**//// <summary>
    /// XML文件中所有的新闻信息
    /// </summary>
    /// <returns>XML文件中所有的新闻信息</returns>
    public DataTable ProcessXML(string Str_url)
    {
        string lastid = "";
        //添加DataTable，并且设置新的列
        DataTable result = new DataTable();
        result.Columns.Add("pubDate", typeof(string));
        result.Columns.Add("title", typeof(string));
        result.Columns.Add("description", typeof(string));
        result.Columns.Add("link", typeof(string));
        DataRow DR = result.NewRow();
        try
        {
            XmlTextReader objXMLReader = new XmlTextReader(Str_url);
            while (objXMLReader.Read())
            {
                XmlNodeType objNodeType = objXMLReader.NodeType;
                if (objNodeType.ToString() == "Element")
                {
                    lastid = objXMLReader.Name;

                }
                if (objNodeType.ToString() == "Text")
                {
                    if (lastid == "title")
                        DR[lastid] = objXMLReader.Value;
                    if (lastid == "link")
                        DR[lastid] = objXMLReader.Value;
                    if (lastid == "description")
                        DR[lastid] = objXMLReader.Value;
                    if (lastid == "pubDate")
                    {
                        DateTime dt = Convert.ToDateTime(objXMLReader.Value);
                        string ch = dt.ToShortDateString();
                        DR[lastid] = ch;
                    }
                    // DR[lastid] = objXMLReader.Value;
                }

                if (objXMLReader.Name == "item" && objXMLReader.NodeType.ToString() == "EndElement")
                {
                    result.Rows.Add(DR);
                    DR = result.NewRow();
                }
            }
            objXMLReader.Close();
            int num = result.Rows.Count;
            amount = num;
            Url = Str_url;

        }
        catch (Exception err)
        {
        }
        return result;
    }
    #endregion
}