Question

我正在将一些数据写入XML文件......但是当我打开它时，所有值都在一行中...如何以可读格式写出它？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代替XmlWriter，然后设置Indentation属性。

示例

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 }

关注@jumbo评论，这也可以像在.NET 2中一样实现。

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。

此外，我使用using块让C＃处理我的资源处理，这样我就不必担心会因异常而丢失任何资源。

{
  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：

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..
        }

这会让你到达你想要的地方，但是，你不必使用MemoryStream，重要的部分就是设置。

Answer 6

使用XmlWriter和XmlWriterSettings直接发送到文件的一点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是否有其他设置和文件覆盖选项，但这很干净，在很多情况下都可以正常工作。

C＃中XMLwriter的缩进和换行命令

6 个答案: