dataset和xml得转换用法

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/// <summary>
/// 用DataSet操作XML
/// </summary>
public class XmlHandle
{
    #region GetDataSetByXml 读取xml直接返回DataSet
    /// <summary>
    /// 读取xml直接返回DataSet
    /// </summary>
    /// <param name="strPath">Xml的相对路径</param>
    /// <returns>已装入XML文档的DataSet</returns>
    public static DataSet GetDataSetByXml(string strXmlPath)
    {
        try
        {
            DataSet ds = new DataSet();
            //读取XML到DataSet
            ds.ReadXml(GetXmlFullPath(strXmlPath));
            if (ds.Tables.Count > 0)
            {

                return ds;
            }
            return null;
        }
        catch (Exception)
        {
            return null;
        }
    }
    #endregion

    #region GetDataViewByXml 读取Xml返回一个经排序或筛选后的DataView
    /// <summary>
    /// 读取Xml返回一个经排序或筛选后的DataView
    /// </summary>
    /// <param name="strXmlPath"></param>
    /// <param name="strWhere">筛选条件,如："name = ＇kgdiwss＇"</param>
    /// <param name="strSort">排序条件,如："Id desc"</param>
    /// <returns></returns>
    public static DataView GetDataViewByXml(string strXmlPath, string strWhere, string strSort)
    {
        try
        {
            DataSet ds = new DataSet();
            ds.ReadXml(GetXmlFullPath(strXmlPath));
            //创建DataView来完成排序或筛选操作
            DataView dv = new DataView(ds.Tables[0]);
            if (strSort != null)
            {
                //对DataView中的记录进行排序