用xsd验证xml

using System;

using System.Text;

using System.Xml;



namespace WebApplication1

{

    public partial class _Default : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {



        }

        StringBuilder sb = null;

        protected void ValidateFile(object sender, EventArgs e)

        {

            string dataFile = Server.MapPath("Order.xml");

            string schemaFile = Server.MapPath("OrderSchema.xsd");

            string namespaceUrl = "http://tempuri.org/OrderSchema.xsd";



            XmlReaderSettings settings = new XmlReaderSettings();

            settings.ValidationType = ValidationType.Schema;

            settings.Schemas.Add(namespaceUrl, schemaFile);

            settings.ValidationEventHandler += new System.Xml.Schema.ValidationEventHandler(settings_ValidationEventHandler);



            string errorMessage="这不是一个合乎规范的数据文件";

            sb = new StringBuilder();



            XmlReader reader = XmlReader.Create(dataFile, settings);

            try

            {

                reader.MoveToContent();

                while (reader.Read())

                {

                    if (reader.NodeType == XmlNodeType.Document && reader.NamespaceURI != namespaceUrl)

                    {

                        Response.Write(errorMessage);

                        break;

                    }

                }

            }

            catch (XmlException ex)

            {

                sb.AppendFormat("{0}<br />", ex.Message);

            }

            finally

            {

                reader.Close();

            }



            if (sb.Length == 0)

                Response.Write("该文档是合法的");

            else

                Response.Write(sb.ToString());

        }



        void settings_ValidationEventHandler(object sender, System.Xml.Schema.ValidationEventArgs e)

        {

            sb.AppendFormat("{0}<br />", e.Message);

        }

    }

}

如果传过来的是XMl的string类型

         StringBuilder sb = null;

        public bool CheckXML(string xml)

        {

            if (xml == null || xml == "")

            {

                return true;

            }

            byte[] array = Encoding.ASCII.GetBytes(xml);

            MemoryStream stream = new MemoryStream(array);



            string schemaFile = System.Web.HttpContext.Current.Server.MapPath("K2HandoffTemplate.xsd");



            XmlReaderSettings settings = new XmlReaderSettings();

            settings.ValidationType = ValidationType.Schema;

            settings.Schemas.Add(null, schemaFile);

            settings.ValidationEventHandler += new System.Xml.Schema.ValidationEventHandler(settings_ValidationEventHandler);

            sb = new StringBuilder();



            XmlReader reader = XmlReader.Create(stream, settings);

            try

            {

                reader.MoveToContent();

                while (reader.Read())

                {

                    if (reader.NodeType == XmlNodeType.Document)

                    {

                        return false;

                    }

                }

            }

            catch (XmlException ex)

            {

                return false;

            }

            finally

            {

                reader.Close();

            }



            if (sb.Length == 0)

                return true;

            else

                return false;

        }



        void settings_ValidationEventHandler(object sender, System.Xml.Schema.ValidationEventArgs e)

        {

            sb.AppendFormat("{0}<br />", e.Message);

        }