C# 利用Xsd验证xml

最近做项目时，用到了xml的序列化与反序列化， 发现最好用xsd来验证xml， 因为反序列化xml不校验xsd。

方法：xmlData变量为xml字符串

MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(xmlData));
                    ms.Position = 0;
 
                    string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, GetNoNamespaceSchemaLocation(xmlData));

                    XmlReaderSettings settings = new XmlReaderSettings();
                    settings.ValidationType = ValidationType.Schema;
                    settings.ValidationFlags = XmlSchemaValidationFlags.ReportValidationWarnings;
                    settings.IgnoreComments = true;
                    settings.IgnoreWhitespace = true;
                    settings.Schemas.Add(null, path);
 
                    using (XmlReader xmlReader = XmlReader.Create(ms, settings))
                    {
                        XmlDocument xmlDocument = new XmlDocument();
                        xmlDocument.Load(xmlReader);
                        xmlDocument.Validate(ValidationCallBack);
                    }

        public static string GetNoNamespaceSchemaLocation(string xml)
        {
            string result = "";
 
            MemoryStream memoryStream = new MemoryStream(Encoding.UTF8.GetBytes(xml));
            using (XmlReader xmlReader = XmlReader.Create(memoryStream))
            {
                while (xmlReader.Read())
                {
                    if (xmlReader.NodeType == XmlNodeType.Element)
                    {
                        result = xmlReader.GetAttribute("noNamespaceSchemaLocation", "http://www.w3.org/2001/XMLSchema-instance");
                        break;
                    }
                }
            }
 
            memoryStream.Close();
            
            return result;
        }
 
        //Display any warnings or errors.
        private static void ValidationCallBack(object sender, ValidationEventArgs args)
        {
            System.Diagnostics.Debug.WriteLine(args.Message);
 
            throw args.Exception;
        }