在C#中使用MemoryStream进行Xml架构验证失败

Question

这是我的功能.

如果将MemoryStream传递给XmlReader,它有时不会验证正确的xml文件.我将XmlDocument对象存储在内存中,我想根据最终用户提供的xsd Schema文件对其进行验证.

ValidateSchema1(string XMLPath, string XSDPath)
    {
        XmlDocument xmlDocument = new XmlDocument();

        xmlDocument.Load(XMLPath);

          using (MemoryStream mstream = new MemoryStream())
          {
              //StreamWriter writer = new StreamWriter(mstream);
              xmlDocument.Save(mstream);
              mstream.Seek(0, SeekOrigin.Begin);
              XmlSchemaSet sc = new XmlSchemaSet();

              // Add the schema to the collection.
              sc.Add(null, XSDPath);

              // Set the validation settings.
              XmlReaderSettings settings = new XmlReaderSettings();
              settings.ValidationType = ValidationType.Schema;
              settings.Schemas = sc;
              settings.ValidationEventHandler += ValidationCallBack;

              // Create the XmlReader object.

              // Not woking
              XmlReader reader = XmlReader.Create(mstream, settings);

              // Working
              //XmlReader reader = XmlReader.Create(new StringReader(xmlDocument.InnerXml), settings);

              // Working
              //XmlReader reader = XmlReader.Create(XMLPath, settings);

              // Parse the file. 
              while (reader.Read()) ;
          }

    }

Answer 1

这可能有效： http://www.experts-exchange.com/Programming/Languages/.NET/Visual_CSharp/Q_23387252.html
这有效 如何在运行时针对 xsd 验证 xml，而不将 xsd 文件保存在本地文件夹上？

编辑 1：修复了您提供的代码，现在代码可以正常工作，验证了我的 2 个文件。您收到错误的原因是您尝试验证 Xsd 本身，但根元素不存在。请亲自检查解决方案。

public void Xsd_whithout_saved()  
    {  
        XmlDocument xmlDoc = new XmlDocument();  
        xmlDoc.Load(@"file.xsd");  
        //In the futute, strArquivoInteiro will be fullfill by xsd comming from   database as nvarchar(max) and I will //not be allowed to save as a file locally    
        string strArquivoInteiro = xmlDoc.OuterXml;  

        byte[] byteArray = Encoding.ASCII.GetBytes(strArquivoInteiro);
        MemoryStream streamXSD = new MemoryStream(byteArray);
        //<<<
        streamXSD.Position = 0;
        StreamReader readerXsd = new StreamReader(streamXSD);

        XmlReaderSettings settings = new XmlReaderSettings();
        settings.ValidationEventHandler += this.MyValidationEventHandler;

        settings.ValidationType = ValidationType.Schema;
        settings.Schemas.Add(null, XmlReader.Create(readerXsd));
        settings.CheckCharacters = true;

        XmlReader XmlValidatingReader = XmlReader.Create(@"file.xml", settings);

        XmlTextReader Reader = new XmlTextReader(@"file.xsd");
        //Created another reader for xml to use for validation
        XmlTextReader Reader2 = new XmlTextReader(@"file.xml");

        XmlSchema Schema = new XmlSchema();

        //IN THIS LINE I RECEIVED THE XmlException "Root Element is Missing" and I can't understand the reason
        //This was the first problem, a xsd root element isn't equal to an xml root element , and you where trying to validate and xsd with xsd here, and of course the error.
        Schema = XmlSchema.Read(Reader, MyValidationEventHandler);

        XmlValidatingReader ValidatingReader = new XmlValidatingReader(Reader2);

        ValidatingReader.ValidationType = ValidationType.Schema;

        ValidatingReader.Schemas.Add(Schema);

        try
        {

            XmlValidatingReader.Read();
            XmlValidatingReader.Close();

            ValidatingReader.ValidationEventHandler += MyValidationEventHandler;

            while ((ValidatingReader.Read()))
            {

            }

            ValidatingReader.Close();
        }
        catch (Exception ex)
        {
            ValidatingReader.Close();
            XmlValidatingReader.Close();
        }
    }