【C#】输出的XML文件中空标签多换行符

生成的XML文件如下：

System.Xml.XmlDocument doc = new System.Xml.XmlDocument();

doc.LoadXml(@"<Config><Version>1.0.0.0</Version><comment></comment></Config>");

//Create an XML declaration. 
System.Xml.XmlDeclaration xmldecl;
xmldecl = doc.CreateXmlDeclaration("1.0", "utf-8", null);

//Add the new node to the document.
System.Xml.XmlElement root = doc.DocumentElement;
doc.InsertBefore(xmldecl, root);

string aXMLPath = Environment.CurrentDirectory + "\\TEST.XML";

doc.Save(@aXMLPath);

生成的XML如下

<?xml version="1.0" encoding="utf-8"?>
<Config>
  <Version>1.0.0.0</Version>
  <comment>
  </comment>
</Config>

换成XmlWriter输出即可解决问题

XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.IndentChars = "            ";
settings.Encoding = Encoding.UTF8;
using (XmlWriter xmlWriter = XmlWriter.Create(aXMLPath, settings))
{
    doc.Save(xmlWriter);
}

生成的XML如下

<?xml version="1.0" encoding="utf-8"?>
<Config>
  <Version>1.0.0.0</Version>
  <comment></comment>
</Config>