Topics created by liezlmarcos

Hi,  I'm trying to download the attachment from exchange server using WebDav. I used below code. Yesterday it is working fine and successfully downloads all the attachments but when I try today to run it I get below error.  The remote server returned an error: (400) Bad Request.  Code:  namespace ExchangeTest{    public class WebDAV    {        public static class Authentications        {            public const string ANONYMOUS = "ANONYMOUS";            public const string BASIC = "BASIC";            public const string DIGEST = "DIGEST";            public const string NTLM = "NTLM";            public const string NEGOTIATE = "NEGOTIATE";            public const string PASSPORT = "PASSPORT";        }        public static class Methods        {            public const string BCOPY = "BCOPY";            public const string BDELETE = "BDELETE";            public const string BMOVE = "BMOVE";            public const string BPROPFIND = "BPROPFIND";            public const string BPROPPATCH = "BPROPPATCH";            public const string COPY = "COPY";            public const string DELETE = "DELETE";            public const string LOCK = "LOCK";            public const string MKCOL = "MKCOL";            public const string MOVE = "MOVE";            public const string NOTIFY = "NOTIFY";            public const string POLL = "POLL";            public const string PROPFIND = "PROPFIND";            public const string PROPPATCH = "PROPPATCH";            public const string SEARCH = "SEARCH";            public const string SUBSCRIBE = "SUBSCRIBE";            public const string UNLOCK = "UNLOCK";            public const string UNSUBSCRIBE = "UNSUBSCRIBE";            public const string X_MS_ENUMATTS = "X-MS-ENUMATTS";        }        public const string CONTENT_TYPE_TEXT_XML = "text/xml";        public const string NS_DAV = "DAV:";        public const string PR_DAV_SEARCHREQUEST = "searchrequest";        public const string PR_DAV_SQL = "sql";        public const string PR_DAV_PROPFIND = "propfind";        public const string PR_DAV_PROP = "prop";        public const string PR_DAV_PROPERTYUPDATE = "propertyupdate";        public const string PR_DAV_SET = "set";        public const string PR_DAV_HREF = "href";        public const string PR_DAV_PROPSTAT = "propstat";        public const string PR_DAV_STATUS = "status";        public const string PR_DAV_RESPONSE = "response";        public const string NS_HTTPMAIL = "urn:schemas:httpmail:";        public const string PR_HTTPMAIL_DATE = "date";        public const string PR_HTTPMAIL_SUBJECT = "subject";        public const string PR_HTTPMAIL_FROM = "from";        public const string PR_HTTPMAIL_TO = "to";        public const string PR_HTTPMAIL_READ = "read";        public const string PR_HTTPMAIL_HASATTACHMENT = "hasattachment";        public const string PR_HTTPMAIL_ATTACHMENTFILENAME = "attachmentfilename";        public const string PR_HTTPMAIL_TEXTDESCRIPTION = "textdescription";        public System.Net.ICredentials Credentials;        public System.Xml.XmlDocument Search(System.Uri uri, string query)        {            System.IO.MemoryStream ms = new System.IO.MemoryStream();            System.Xml.XmlTextWriter writer = new System.Xml.XmlTextWriter(ms, null);            writer.WriteStartDocument();            writer.WriteStartElement(PR_DAV_SEARCHREQUEST, NS_DAV);            writer.WriteStartElement(PR_DAV_SQL, NS_DAV);            writer.WriteValue(query);            writer.WriteEndElement();            writer.WriteEndElement();            writer.WriteEndDocument();            writer.Close();            writer = null;            byte[] data = ms.ToArray();            ms.Close();            ms = null;            return GetXmlResponse(uri, Methods.SEARCH, data);        }        public System.Xml.XmlDocument PropFind(System.Uri uri, string localname, string ns)        {            System.IO.MemoryStream ms = new System.IO.MemoryStream();            System.Xml.XmlTextWriter writer = new System.Xml.XmlTextWriter(ms, null);            writer.WriteStartDocument();            writer.WriteStartElement(PR_DAV_PROPFIND, NS_DAV);            writer.WriteStartElement(PR_DAV_PROP, NS_DAV);            writer.WriteStartElement(localname, ns);            writer.WriteEndElement();            writer.WriteEndElement();            writer.WriteEndElement();            writer.WriteEndDocument();            writer.Close();            writer = null;            byte[] data = ms.ToArray();            ms.Close();            ms = null;            return GetXmlResponse(uri, Methods.SEARCH, data);        }        public void Delete(System.Uri uri)        {            GetEmptyResponse(uri, Methods.DELETE, null);        }        public System.Xml.XmlDocument PropPatch(System.Uri uri, string localname, string ns, object value)        {            System.IO.MemoryStream ms = new System.IO.MemoryStream();            System.Xml.XmlTextWriter writer = new System.Xml.XmlTextWriter(ms, null);            writer.WriteStartDocument();            writer.WriteStartElement(PR_DAV_PROPERTYUPDATE, NS_DAV);            writer.WriteStartElement(PR_DAV_SET, NS_DAV);            writer.WriteStartElement(PR_DAV_PROP, NS_DAV);            writer.WriteStartElement(localname, ns);            writer.WriteValue(value);            writer.WriteEndElement();            writer.WriteEndElement();            writer.WriteEndDocument();            writer.Close();            writer = null;            byte[] data = ms.ToArray();            ms.Close();            ms = null;            return GetXmlResponse(uri, Methods.PROPPATCH, data);        }        public System.Xml.XmlDocument EnumAtts(System.Uri uri)        {            return GetXmlResponse(uri, Methods.X_MS_ENUMATTS, null);        }        private string GetHtmlResponse(System.Uri uri, string method, byte[] data)        {            System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(uri);            request.Credentials = Credentials;            request.Method = method;            if (data != null)            {                string xml = System.Text.Encoding.UTF8.GetString(data);                request.ContentType = CONTENT_TYPE_TEXT_XML;                request.ContentLength = data.Length;                System.IO.Stream requestStream = request.GetRequestStream();                requestStream.Write(data, 0, data.Length);                requestStream.Close();            }            System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();            System.IO.Stream responseStream = response.GetResponseStream();            System.IO.MemoryStream memoryStream = new System.IO.MemoryStream();            int length = 8192;            byte[] buffer = new byte[length];            int count = responseStream.Read(buffer, 0, length);            while (count > 0)            {                memoryStream.Write(buffer, 0, count);                count = responseStream.Read(buffer, 0, length);            }            buffer = memoryStream.ToArray();            memoryStream.Close();            responseStream.Close();            response.Close();            return System.Text.Encoding.UTF8.GetString(buffer);        }        private void GetEmptyResponse(System.Uri uri, string method, byte[] data)        {            System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(uri);            request.Credentials = Credentials;            request.Method = method;            if (data != null)            {                string xml = System.Text.Encoding.UTF8.GetString(data);                request.ContentType = CONTENT_TYPE_TEXT_XML;                request.ContentLength = data.Length;                System.IO.Stream requestStream = request.GetRequestStream();                requestStream.Write(data, 0, data.Length);                requestStream.Close();            }            System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();            response.Close();        }        private System.Xml.XmlDocument GetXmlResponse(System.Uri uri, string method, byte[] data)        {            System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(uri);            request.Credentials = Credentials;            request.Method = method;            if (data != null)            {                string xml = System.Text.Encoding.UTF8.GetString(data);                request.ContentType = CONTENT_TYPE_TEXT_XML;                request.ContentLength = data.Length;                System.IO.Stream requestStream = request.GetRequestStream();                requestStream.Write(data, 0, data.Length);                requestStream.Close();            }            System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();            System.IO.Stream responseStream = response.GetResponseStream();            System.Xml.XmlDocument document = new System.Xml.XmlDocument();            document.Load(responseStream);            responseStream.Close();            response.Close();            return document;        }    }    public class ExchangeDownloader    {        public string Username;        public string Domain;        public string Password;        public string MailboxUrl;        public string DownloadPath;        public void Download()        {            System.Uri mailboxUri = new System.Uri(MailboxUrl);            System.Net.NetworkCredential credential = new System.Net.NetworkCredential(Username, Password, Domain);            WebDAV webdav = new WebDAV();            System.Net.CredentialCache credentials = new System.Net.CredentialCache();            credentials.Add(mailboxUri, WebDAV.Authentications.NTLM, credential);            webdav.Credentials = credentials;            System.Uri[] messageUris = getMessagesWithAttachments(webdav, mailboxUri);            foreach (System.Uri messageUri in messageUris)            {                System.Uri[] attachmentUris = getAttachments(webdav, messageUri);                foreach (System.Uri attachmentUri in attachmentUris)                {                    downloadAttachment(webdav, attachmentUri);                }                webdav.PropPatch(messageUri, WebDAV.PR_HTTPMAIL_READ, WebDAV.NS_HTTPMAIL, "1");            }        }        private void downloadAttachment(WebDAV webdav, System.Uri uri)        {            System.Net.WebClient webClient = new System.Net.WebClient();            webClient.Credentials = webdav.Credentials;            string file = System.IO.Path.GetFileName(uri.AbsolutePath);            string filename = System.IO.Path.Combine(DownloadPath, file);            webClient.DownloadFile(uri, filename);        }        private System.Uri[] getAttachments(WebDAV webdav, System.Uri uri)        {            System.Collections.ArrayList attachmentList = new System.Collections.ArrayList();            System.Xml.XmlDocument document = webdav.EnumAtts(uri);            System.Xml.XmlNodeList responseElements = document.GetElementsByTagName(WebDAV.PR_DAV_RESPONSE, WebDAV.NS_DAV);            foreach (System.Xml.XmlElement responseElement in responseElements)            {                System.Xml.XmlElement hrefElement = responseElement[WebDAV.PR_DAV_HREF, WebDAV.NS_DAV];                System.Uri href = new System.Uri(hrefElement.InnerText);                attachmentList.Add(href);            }            return (System.Uri[])attachmentList.ToArray(typeof(System.Uri));        }        private System.Uri[] getMessagesWithAttachments(WebDAV webdav, System.Uri uri)        {            System.Collections.ArrayList messageList = new System.Collections.ArrayList();            string query = string.Format(                "SELECT \"urn:schemas:httpmail:subject\" " +                "FROM \"{0}\" " +                "WHERE \"urn:schemas:httpmail:hasattachment\"=true " +                "ORDER BY \"urn:schemas:httpmail:date DESC\""                , uri);            System.Xml.XmlDocument document = webdav.Search(uri, query);            System.Xml.XmlNodeList responseElements = document.GetElementsByTagName(WebDAV.PR_DAV_RESPONSE, WebDAV.NS_DAV);            foreach (System.Xml.XmlElement responseElement in responseElements)            {                System.Xml.XmlElement hrefElement = responseElement[WebDAV.PR_DAV_HREF, WebDAV.NS_DAV];                System.Uri href = new System.Uri(hrefElement.InnerText);                messageList.Add(href);            }            return (System.Uri[])messageList.ToArray(typeof(System.Uri));        }    }    static class Program    {        static void Main()        {            ExchangeDownloader exchangeDownloader = new ExchangeDownloader();            exchangeDownloader.Username = "username";            exchangeDownloader.Domain = "domain";            exchangeDownloader.Password = "password";            exchangeDownloader.MailboxUrl = "http://server/exchange/account/inbox";            exchangeDownloader.DownloadPath = "C:\\Downloads";            exchangeDownloader.Download();        }    }}