XmlException：输入文档已超过MaxCharactersFromEntities设置的限制

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我有一个XML文件，如下所示：

I have an XML file that looks like this:

<!DOCTYPE Root [ <!ELEMENT anEntity (#PCDATA)> <!ELEMENT 500SuchElementsHere (#PCData)> <!ENTITY file1 SYSTEM "file1.xml"> ... <!ENTITY file25 SYSTEM "file25.xml"> ]> <Root> &file1; &file2; ... &file25; </Root>

我正在使用XmlDocument这样加载XML文件

I'm loading the XML file using XmlDocument like this

XmlDocument doc = new XmlDocument(); doc.Load("filePath to the above xml file");

加载会抛出标题中提到的异常。我在Windows 7 Ultimate上运行.NET 4.5，VS 2012 Desktop Express。任何帮助是赞赏。谢谢

The load throws the exception mentioned in the title. I'm running .NET 4.5, VS 2012 Desktop Express on Windows 7 Ultimate. Any help is appreciated. Thanks

推荐答案

您需要使用 XmlReader ，其中包含设置属性 MaxCharactersFromEntities 设置为0（或大量将适用于您的场景）：

You need to use an XmlReader with the settings property MaxCharactersFromEntities set to 0 (or a large number that will work for your scenario):

var doc = new XmlDocument(); using (var stream = new MemoryStream(Encoding.Default.GetBytes(xml))) { var settings = new XmlReaderSettings(); // The default is 0, but setting it here allows us to document exactly why we are taking this approach. settings.MaxCharactersFromEntities = 0; using (var reader = XmlReader.Create(stream, settings)) { doc.Load(reader); } }