如何将xml数据附加到xml文件中

我试图将集合类转换为xml数据并将xml数据附加到xml文件这里是我的函数’

public void XmlWriter(List Femails) { string ErrorXmlFile = @"../../Retries.xml"; try { if (!File.Exists(ErrorXmlFile)) { XmlSerializer xSeriz = new XmlSerializer(typeof(List)); FileStream fs = File.Open(ErrorXmlFile, FileMode.Append, FileAccess.Write, FileShare.ReadWrite); xSeriz.Serialize(fs, Femails); } else { foreach(Email email in Femails) { XmlDocument doc = new XmlDocument(); doc.Load(ErrorXmlFile); XmlNode xnode = doc.CreateNode(XmlNodeType.Element, "ArrayOfEmail", null); XmlSerializer xSeriz = new XmlSerializer(typeof(Email)); StringWriter sw = new StringWriter(); xSeriz.Serialize(sw,email); xnode.InnerXml = Convert.ToString(sw); doc.DocumentElement.AppendChild(xnode); doc.Save(ErrorXmlFile); } } } catch (Exception ex) { throw ex; } } 

在上面的函数中，“femail”是List的参数，其中Email是userdefind自定义类。 第一次检查文件是否存在。 如果没有那么它现在工作正常，但是当我需要将数据附加到我现有的文件时它失败了。

根据我上面的代码，它使用将单个Email对象转换为xml数据，并在绑定之前删除此标记。

我从我的代码得到的输出是：

    2013-01-23T10:09:48+05:30 Rajendra Bhalekar <[e-mail]> Mansha Suman <[e-mail]> Ye dil sun raha hai jo mere dil ki hai sada ye...socha tha na maine...... 32a84ef7-31bf-4366-bcab-ec10b2f39bc6  Hi Raj, Dil pe mat le yaar dil pe mat le.... idx:32a84ef7-31bf-4366-bcab-ec10b2f39bc6 odhani chunariya tere naam ki - Pyar kiya to darna kya sona sona telephone dhun pe hasne wali - hidustaniREPLY ABOVE THIS LINEdil ibadat kar raha hai Thanks & regards, Raj  Hi Raj,Dil pe mat le yaar dil pe mat le....idx:32a84ef7-31bf-4366-bcab-ec10b2f39bc6odhani chunariya tere naam ki - Pyar kiya to darna kya     2013-01-23T10:09:48+05:30 Rajendra Bhalekar <[e-mail]> Mansha Suman <[e-mail]> Ye dil sun raha hai jo mere dil ki hai sada ye...socha tha na maine...... 32a84ef7-31bf-4366-bcab-ec10b2f39bc6  Hi Raj, Dil pe mat le yaar dil pe mat le.... idx:32a84ef7-31bf-4366-bcab-ec10b2f39bc6 odhani chunariya tere naam ki - Pyar kiya to darna kya sona sona telephone dhun pe hasne wali - hidustaniREPLY ABOVE THIS LINEdil ibadat kar raha hai Thanks & regards, Raj  Hi Raj,Dil pe mat le yaar dil pe mat le....idx:32a84ef7-31bf-4366-bcab-ec10b2f39bc6odhani chunariya tere naam ki - Pyar kiya to darna kya   

这不是我所期待的。 请建议我需要更正。

Answer 1

我的问题现在解决了，这段代码对我有用

 public void XmlWriter(List Femails) { #region On Error Retry and retrycount with xml file string ErrorXmlFile = @"../../Retries.xml"; try { if (!File.Exists(ErrorXmlFile)) { XmlSerializer xSeriz = new XmlSerializer(typeof(List)); FileStream fs = File.Open(ErrorXmlFile, FileMode.Append, FileAccess.Write, FileShare.ReadWrite); xSeriz.Serialize(fs, Femails); foreach (Email email in Femails) { SaveAttachment(email); } } else { XmlDocument doc = new XmlDocument(); doc.Load(ErrorXmlFile); foreach (Email email in Femails) { XmlNode xnode = doc.CreateNode(XmlNodeType.Element, "BLACKswastik", null); XmlSerializer xSeriz = new XmlSerializer(typeof(Email)); XmlSerializerNamespaces ns = new XmlSerializerNamespaces(); ns.Add("", ""); XmlWriterSettings writtersetting = new XmlWriterSettings(); writtersetting.OmitXmlDeclaration = true; StringWriter stringwriter = new StringWriter(); using (XmlWriter xmlwriter = System.Xml.XmlWriter.Create(stringwriter, writtersetting)) { xSeriz.Serialize(xmlwriter, email, ns); } xnode.InnerXml = stringwriter.ToString(); XmlNode bindxnode = xnode.SelectSingleNode("Email"); doc.DocumentElement.AppendChild(bindxnode); SaveAttachment(email); } doc.Save(ErrorXmlFile); } } catch (Exception ex) { throw ex; } #endregion }