C＃中XMLwriter的缩进和换行命令

我正在将一些数据写入XML文件…但是当我打开它时，所有的值都在一行中…如何以可读格式编写它？即新行和缩进中的每个节点？

FileStream fs = new FileStream("myfile.xml", FileMode.Create); XmlWriter w = XmlWriter.Create(fs); w.WriteStartDocument(); w.WriteStartElement("myfile"); w.WriteElementString("id", id.Text); w.WriteElementString("date", dateTimePicker1.Text); w.WriteElementString("version", ver.Text); w.WriteEndElement(); w.WriteEndDocument(); w.Flush(); fs.Close(); 

Answer 1

使用XmlTextWriter而不是XmlWriter ，然后设置Indentation属性。

例

 string filename = "MyFile.xml"; using (FileStream fileStream = new FileStream(filename, FileMode.Create)) using (StreamWriter sw = new StreamWriter(fileStream)) using (XmlTextWriter xmlWriter = new XmlTextWriter(sw)) { xmlWriter.Formatting = Formatting.Indented; xmlWriter.Indentation = 4; // ... Write elements } 

在@jumbo评论之后，这也可以像在.NET 2中那样实现。

 var filename = "MyFile.xml"; var settings = new XmlWriterSettings() { Indent = true, IndentChars = " " } using (var w = XmlWriter.Create(filename, settings)) { // ... Write elements } 

Answer 2

您需要首先创建一个指定缩进的XmlWriterSettings对象，然后在创建XmlWriter时，在路径后传入XmlWriterSettings。

另外，我使用using块让C＃处理我的资源处理，这样我就不用担心在exception时丢失任何资源。

 { XmlWriterSettings xmlWriterSettings = new XmlWriterSettings() { Indent = true, IndentChars = "\t", NewLineOnAttributes = true }; using (XmlWriter w= XmlWriter.Create("myfile.xml", xmlWriterSettings)) { w.WriteStartDocument(); w.WriteStartElement("myfile"); w.WriteElementString("id", id.Text); w.WriteElementString("date", dateTimePicker1.Text); w.WriteElementString("version", ver.Text); w.WriteEndElement(); w.WriteEndDocument(); } } 

Answer 3

检查“设置”属性：

 w.Settings.Indent = true; 

编辑：您无法直接设置它：

 System.Xml.XmlWriter.Create("path", new System.Xml.XmlWriterSettings()) 

Answer 4

设置XmlTextWriter的格式化属性：

 TextWriter textWriter; var xmlTextWriter = new XmlTextWriter(textWriter); xmlTextWriter.Formatting = Formatting.Indented; 

Answer 5

使用设置如下：

  XmlWriterSettings settings = new XmlWriterSettings(); settings.Encoding = Encoding.UTF8; settings.Indent = true; using (MemoryStream memoryStream = new MemoryStream()) using (XmlWriter xmlDoc = XmlWriter.Create(memoryStream, settings)){ // logic here.. } 

这将使您获得所需的位置，但您不必使用MemoryStream，重要的部分是设置。

Answer 6

一个使用XmlWriter和XmlWriterSettings直接发送到文件的VB.NET版本：

 Dim oSerializer As New XmlSerializer(GetType(MyType), New XmlRootAttribute("MyRootAttributeName")) Using oXmlWriter As XmlWriter = XmlWriter.Create("MyFilePath", New XmlWriterSettings With {.Indent = True}) //Default encoding is utf-8 oSerializer.Serialize(oXmlWriter, oInstanceOfMyType) oXmlWriter.Flush() End Using 

检查doco的其他设置和文件覆盖选项，但这很干净，并且在很多情况下都可以正常工作。