XML与DataSet的相互转换类 ASP.NET

??
XmlDatasetConvert 该类提供了四种方法：
1、将xml对象内容字符串转换为DataSet
2、将xml文件转换为DataSet
3、将DataSet转换为xml对象字符串
4、将DataSet转换为xml文件

XmlDatasetConvert.cs using System; using System.Collections.Generic; using System.Text; using System.Data; using System.IO; using System.Xml; namespace XmlDesign { class XmlDatasetConvert { //将xml对象内容字符串转换为DataSet public static DataSet ConvertXMLToDataSet(string xmlData) { StringReader stream = null; XmlTextReader reader = null; try { DataSet xmlDS = new DataSet(); stream = new StringReader(xmlData); //从stream装载到XmlTextReader reader = new XmlTextReader(stream); xmlDS.ReadXml(reader); return xmlDS; } catch (System.Exception ex) { throw ex; } finally { if (reader != null) reader.Close(); } }//将xml文件转换为DataSet public static DataSet ConvertXMLFileToDataSet(string xmlFile) { StringReader stream = null; XmlTextReader reader = null; try { XmlDocument xmld = new XmlDocument(); xmld.Load(xmlFile); DataSet xmlDS = new DataSet(); stream = new StringReader(xmld.InnerXml); //从stream装载到XmlTextReader reader = new XmlTextReader(stream); xmlDS.ReadXml(reader); //xmlDS.ReadXml(xmlFile); return xmlDS; } catch (System.Exception ex) { throw ex; } finally { if (reader != null) reader.Close(); } }//将DataSet转换为xml对象字符串 public static string ConvertDataSetToXML(DataSet xmlDS) { MemoryStream stream = null; XmlTextWriter writer = null; try { stream = new MemoryStream(); //从stream装载到XmlTextReader writer = new XmlTextWriter(stream, Encoding.Unicode); //用WriteXml方法写入文件. xmlDS.WriteXml(writer); int count = (int)stream.Length; byte[] arr = new byte[count]; stream.Seek(0, SeekOrigin.Begin); stream.Read(arr, 0, count); UnicodeEncoding utf = new UnicodeEncoding(); return utf.GetString(arr).Trim(); } catch (System.Exception ex) { throw ex; } finally { if (writer != null) writer.Close(); } }//将DataSet转换为xml文件 public static void ConvertDataSetToXMLFile(DataSet xmlDS,string xmlFile) { MemoryStream stream = null; XmlTextWriter writer = null; try { stream = new MemoryStream(); //从stream装载到XmlTextReader writer = new XmlTextWriter(stream, Encoding.Unicode); //用WriteXml方法写入文件. xmlDS.WriteXml(writer); int count = (int)stream.Length; byte[] arr = new byte[count]; stream.Seek(0, SeekOrigin.Begin); stream.Read(arr, 0, count); //返回Unicode编码的文本 UnicodeEncoding utf = new UnicodeEncoding(); StreamWriter sw = new StreamWriter(xmlFile); sw.WriteLine(""); sw.WriteLine(utf.GetString(arr).Trim()); sw.Close(); } catch( System.Exception ex ) { throw ex; } finally { if (writer != null) writer.Close(); } }} }

使用示例
【XML与DataSet的相互转换类】using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Data;
namespace XmlDesign
{
class Program
{
static void Main(string[] args)
{
DataSet ds = new DataSet();
转换一个XML文件(本地\网络均可)为一个DataSet#region 转换一个XML文件(本地\网络均可)为一个DataSet
//http://news.baidu.com/n?cmd=1&class=sportnews&tn=rss
//F:\study\001CSharp_Study\002Source\XmlDesign\XmlDesign\Save_Plan.xml
ds = XmlDatasetConvert.ConvertXMLFileToDataSet(@"http://www.bjcan.com/hengxing/"http://news.baidu.com/n?cmd=1&class=sportnews&tn=rss%22");
Console.WriteLine("数据集名为\"{0}\",包含{1}个表", ds.DataSetName, ds.Tables.Count);
foreach(DataTable dt in ds.Tables)
{
PrintTableName(dt.TableName);
};
#endregion
构造一个DataSet,并转换为XML字符串#region 构造一个DataSet,并转换为XML字符串
DataSet ds1 = new DataSet();
DataTable dt1 = new DataTable();
dt1.TableName = "test";
dt1.Columns.Add("id");
dt1.Columns.Add("name");
dt1.Rows.Add("i001", "hekui");
dt1.Rows.Add("i002", "liyang");
DataTable dt2 = new DataTable();
dt2.TableName = "test1";
dt2.Columns.Add("bookid");
dt2.Columns.Add("bookname");
dt2.Rows.Add("b001", "书本1");
dt2.Rows.Add("b002", "书本2");
ds1.Tables.Add(dt1);
ds1.Tables.Add(dt2);
ds1.DataSetName = "方案";
string xmlOut = XmlDatasetConvert.ConvertDataSetToXML(ds1);
#endregion
转换一个XML字符串为一个DataSet#region 转换一个XML字符串为一个DataSet
DataSet ds2 = new DataSet();
ds2 = XmlDatasetConvert.ConvertXMLToDataSet(xmlOut);
Console.WriteLine("数据集名为\"{0}\",包含{1}个表", ds2.DataSetName, ds2.Tables.Count);
foreach (DataTable dt in ds2.Tables)
{
PrintTableName(dt.TableName);
};
#endregion
转换一个Dataset为一个XML文件#region 转换一个Dataset为一个XML文件
XmlDatasetConvert.ConvertDataSetToXMLFile(ds2, "c:\\adadsda1.xml");
#endregion

Console.ReadLine();
}
private static void PrintTableName(string tableName)
{
Console.WriteLine(tableName);
}
}
}