| 标题 | XML与DataSet的相互转换类 |
| 内容 | 送给大家一个XML与DataSet的相互转换的类: 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 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://news.baidu.com/n?cmd=1&class=sportnews&tn=rss"); 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); } } } |
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