有很多方法，一些:

XmlSerializer。使用带有目标模式的类 如果您想读取，请使用XmlSerializer 将Xml中的数据加载到 类的实例。 linq2xml XmlTextReader。 XmlDocument XPathDocument(只读访问)

你可以:

使用XmlSerializer类 使用XmlDocument类

示例在msdn页面上提供

如果您想从XML文件中检索特定的值

 XmlDocument _LocalInfo_Xml = new XmlDocument();
            _LocalInfo_Xml.Load(fileName);
            XmlElement _XmlElement;
            _XmlElement = _LocalInfo_Xml.GetElementsByTagName("UserId")[0] as XmlElement;
            string Value = _XmlElement.InnerText;

您可以使用数据集读取XML字符串。

var xmlString = File.ReadAllText(FILE_PATH);
var stringReader = new StringReader(xmlString);
var dsSet = new DataSet();
dsSet.ReadXml(stringReader);

发布这篇文章是为了提供信息。

There are different ways, depending on where you want to get. XmlDocument is lighter than XDocument, but if you wish to verify minimalistically that a string contains XML, then regular expression is possibly the fastest and lightest choice you can make. For example, I have implemented Smoke Tests with SpecFlow for my API and I wish to test if one of the results in any valid XML - then I would use a regular expression. But if I need to extract values from this XML, then I would parse it with XDocument to do it faster and with less code. Or I would use XmlDocument if I have to work with a big XML (and sometimes I work with XML's that are around 1M lines, even more); then I could even read it line by line. Why? Try opening more than 800MB in private bytes in Visual Studio; even on production you should not have objects bigger than 2GB. You can with a twerk, but you should not. If you would have to parse a document, which contains A LOT of lines, then this documents would probably be CSV.

我写这条评论，是因为我看到了大量使用XDocument的示例。XDocument不适用于大型文档，或者当您只想验证内容是否为XML有效时。如果希望检查XML本身是否有意义，那么需要Schema。

我对建议的答案也投了反对票，因为我相信它本身就需要上述信息。假设我需要验证200M的XML是否有效，每小时10次。XDocument会浪费大量的资源。

prasanna venkatesh还指出，您可以尝试将字符串填充到数据集，它也将指示有效的XML。

有很多方法，一些:

XmlSerializer。使用带有目标模式的类 如果您想读取，请使用XmlSerializer 将Xml中的数据加载到 类的实例。 linq2xml XmlTextReader。 XmlDocument XPathDocument(只读访问)