C#实现XML文件与DataTable、Dataset互转
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一、DataTable转XML
#region DataTableToXml
/// <summary>
/// 将DataTable对象转换成XML字符串
/// </summary>
/// <param name="ds">DataSet对象</param>
/// <returns>XML字符串</returns>
public static string DataTableToXml(DataTable dt,string sName)
{
if (dt != null)
{
MemoryStream ms = null;
XmlTextWriter XmlWt = null;
try
{
ms = new MemoryStream();
//根据ms实例化XmlWt
XmlWt = new XmlTextWriter(ms, System.Text.Encoding.Unicode);
//获取ds中的数据
dt.TableName = Sql.IsEmptyString(sName) ? "dt2xml" : sName;
dt.WriteXml(XmlWt, XmlWriteMode.WriteSchema);
int count = (int)ms.Length;
byte[] temp = new byte[count];
ms.Seek(0, SeekOrigin.Begin);
ms.Read(temp, 0, count);
//返回Unicode编码的文本
System.Text.UnicodeEncoding ucode = new System.Text.UnicodeEncoding();
string returnValue = ucode.GetString(temp).Trim();
return returnValue;
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
//释放资源
if (XmlWt != null)
{
XmlWt.Close();
ms.Close();
ms.Dispose();
}
}
}
else
{
return "";
}
}
#endregion二、XML转Dataset
方法A:
#region Xml To DataSet
public static DataSet XmlToDataSet(string xmlString)
{
XmlDocument xmldoc = new XmlDocument();
xmldoc.LoadXml(xmlString);
StringReader stream = null;
XmlTextReader reader = null;
try
{
DataSet xmlDS = new DataSet();
stream = new StringReader(xmldoc.InnerXml);
reader = new XmlTextReader(stream);
xmlDS.ReadXml(reader);
reader.Close();
return xmlDS;
}
catch (System.Exception ex)
{
reader.Close();
throw ex;
}
}
#endregion方法B:
private static DataSet XMLToDataset()
{
string strDBXMLFile = @"F:\TestDir\XML\DBTEST.XML";
DataSet dsXML = new DataSet();
dsXML.ReadXml(strDBXMLFile);
//某个节点名称的所有节点内容
DataTable dtOneNote = dsXML.Tables["SMT"];
return dsXML;
}三、Dataset转XML
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();
}
}四、Dataset转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("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
sw.WriteLine(utf.GetString(arr).Trim());
sw.Close();
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
if (writer != null) writer.Close();
}
}到此这篇关于C#实现XML文件与DataTable、Dataset互转的文章就介绍到这了。希望对大家的学习有所帮助，也希望大家多多支持编程网。
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