C＃XML Serilization＆amp;附加新数据

Question

我正在尝试使用以下结构创建XML文件

但是，这就是我得到的（一行）：

<?xml version="1.0" encoding="utf-8"?><!--This file is generated by the program.--><root><OFBM time="9:15" date="22.06.2016"><folder>file:///C:/Program Files (x86)/Cisco/Cisco AnyConnect Secure Mobility Client</folder><folder>file:///C:/Arduino223</folder></OFBM></root>

我的代码：

public void CreateXML()
        {
            XmlWriter writer = XmlWriter.Create(@"C:\Users\Alek\Dropbox\D\Debug\product.xml");

            writer.WriteStartDocument();

            writer.WriteComment("This file is generated by the program.");

            writer.WriteStartElement("root");
            writer.WriteStartElement("OFBM");
            writer.WriteAttributeString("time", "9:15");
            writer.WriteAttributeString("date", "22.06.2016");
            writer.WriteElementString("folder", @"file:///C:/Program Files (x86)/Cisco/Cisco AnyConnect Secure Mobility Client");
            writer.WriteElementString("folder", @"file:///C:/Arduino223");
            writer.WriteEndElement();
            writer.WriteEndElement();
            writer.WriteEndDocument();
            writer.Flush();
            writer.Close();
        }

我如何追加新数据？而不是每次都创建一个新的XML。

Answer 1

添加一些设置以实现您尝试在XML文件中完成的缩进：

 //I added this part (XmlWriterSettings):
 XmlWriterSettings mySettings = new XmlWriterSettings();
 mySettings.Indent = true;
 mySettings.IndentChars = ("    ");
 mySettings.CloseOutput = true;
 mySettings.OmitXmlDeclaration = true;

//Added the settings you intialize and set on your XmlWriter:
 XmlWriter writer = XmlWriter.Create(@"C:\Users\Alek\Dropbox\D\Debug\product.xml", mySettings);

 writer.WriteStartDocument();

 writer.WriteComment("This file is generated by the program.");

 writer.WriteStartElement("root");
 writer.WriteStartElement("OFBM");
 writer.WriteAttributeString("time", "9:15");
 writer.WriteAttributeString("date", "22.06.2016");
 writer.WriteElementString("folder", @"file:///C:/Program Files (x86)/Cisco/Cisco AnyConnect Secure Mobility Client");
 writer.WriteElementString("folder", @"file:///C:/Arduino223");
 writer.WriteEndElement();
 //writer.WriteEndElement();
 //writer.WriteEndDocument();
  writer.Flush();
  writer.Close();

要在不重新创建文件的情况下附加新数据，您可以执行以下操作：

 XDocument doc = XDocument.Load(@"C:\Users\Alek\Dropbox\D\Debug\product.xml");
 XElement school = doc.Element("root");
 school.Add(new XElement("OFBM",
                   new XElement("folder", "file:///C:/Arduino223")));
 doc.Save(@"C:\Users\Alek\Dropbox\D\Debug\product.xml");