DataTable的序列化和反序列化（格式不变保存文件和读取）

从数据库中读取的dataTable数据可以直接以datatable的格式保存为文件，可以不用分别写xml（曾在井数据支持单机（不调用服务读取数据库）的情况下使用）

代码如下：

序列化：

if (curDT != null)
{

　　　　　　　string filepath =DirectorySetting.DirectorySetting.DataPath + "http://www.cnblogs.com/stupidfish/admin/file://jing//" + objectID + ".xml";
XmlWriter writer = XmlWriter.Create(filepath);
System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(typeof(DataTable));
serializer.Serialize(writer, curDT);
writer.Close();
}

反序列化：

　　　　　 string folderPath = DirectorySetting.DirectorySetting.DataPath + "http://www.cnblogs.com/stupidfish/admin/file://jing//";

DirectoryInfo TheFolder = new DirectoryInfo(folderPath);

　　　　　foreach (FileInfo NextFile in TheFolder.GetFiles())
{
if (NextFile.FullName == filePath)
continue;
FileStream fs = new FileStream(NextFile.FullName, FileMode.Open);
XmlReader xmlReader = XmlReader.Create(fs);
System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(typeof(System.Data.DataTable));
System.Data.DataTable curDT = serializer.Deserialize(xmlReader) as System.Data.DataTable;
xmlReader.Close();
fs.Close();
}