How Can I Read and Parse XML Files Efficiently in C#?

C#high -efficiency XML file reading and analysis

When processing structured data in C#, the XML file provides a flexible and defined format. Understanding how to read and analyze XML files is very important for efficient operations and access to data.

Use XMLDOCUMENT to process xml

C#offers class as a powerful tool for reading and analysis of XML documents. This allows you to:

Load XML from the file or string: XmlDocument

• Navigation and access XML elements:

  Use

  <code class="language-csharp">  using System.Xml;
  
    XmlDocument doc = new XmlDocument();
    doc.Load("c:\temp.xml");</code>

  Find a specific node in the XML document. For example, to retrieve the Title element in the book tag:

  <code class="language-csharp">  doc.LoadXml("<xml>something</xml>");</code>

• iterative sub -node: Sub -nodes using cycle iterative elements: SelectSingleNode

  <code class="language-csharp">  XmlNode node = doc.DocumentElement.SelectSingleNode("/book/title");</code>

• Extract node text:

  Use Read the text of the node:

  <code class="language-csharp">  foreach (XmlNode node in doc.DocumentElement.ChildNodes)
    {
      string text = node.InnerText; //或进一步循环遍历其子节点
    }</code>

• Reading attributes:

  through the collection access attribute value: InnerText

  <code class="language-csharp">  string text = node.InnerText;</code>

Treatment of the empty attribute value

• Please note that if the attribute does not exist, may be null. Always check NULL to avoid potential errors. Attributes

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