How to retrieve an object's properties by using the HttpWebRequest class and the HttpWebResponse class in Visual C#

using System;
using System.Net;
using System.IO;
            
namespace WebDavNET
{
    /// <summary>
    /// Summary description for Class1.
    /// </summary>
    class Class1
    {
        static void Main(string[] args)
        {
            try 
            {
                // TODO: Replace with the URL of an object on Exchange 2000.
                string sUri = "http://ExchServer/Exchange/UserAlias/Inbox/Test.EML";

                System.Uri myUri = new System.Uri(sUri);
                HttpWebRequest HttpWRequest = (HttpWebRequest)WebRequest.Create(myUri);

                string sQuery;
                sQuery = "<?xml version='1.0'?>" + 
                    "<a:propfind xmlns:a='DAV:' xmlns:m='urn:schemas:mailheader:'>" + 
                    "<a:prop>" + 
                    "<m:subject/>" + 
                    "<a:isfolder/>" + 
                    "<a:displayname/>" + 
                    "<a:href/>" + 
                    "</a:prop>" + 
                    "</a:propfind>";

                // Set credentials.
                // TODO: Replace with appropriate user credentials.
                NetworkCredential myCred = new NetworkCredential(@"DomainName\UserName", "UserPassword");
                CredentialCache myCredentialCache = new CredentialCache();
                myCredentialCache.Add(myUri, "Basic", myCred);
                HttpWRequest.Credentials = myCredentialCache;
 
                //Uncomment the following statement and comment the previous four statements if you 
                //use Integrated Windows authentication.
                //httpWRequest.Credentials = CredentialCache.DefaultCredentials

                //Note In Basic type authentication, the user name and password are sent as base64-encoded text, and it is 
                //easily decoded. Microsoft recommends that you use Basic instead of SSL to help protect the user name and password.

					

                // Set headers.
                HttpWRequest.KeepAlive = true; //this is the default
                HttpWRequest.Headers.Set("Pragma", "no-cache");
                HttpWRequest.Headers.Set("Translate", "f");
                HttpWRequest.ContentType =  "text/xml";
                HttpWRequest.ContentLength = sQuery.Length;

                //Set the request timeout to five minutes.
                HttpWRequest.Timeout = 300000;
                // set the request method
                HttpWRequest.Method = "PROPFIND";

                // Store the data in a byte array.
                byte[] ByteQuery = System.Text.Encoding.ASCII.GetBytes(sQuery);
                HttpWRequest.ContentLength = ByteQuery.Length;
                Stream QueryStream = HttpWRequest.GetRequestStream();
                // write the data to be posted to the Request Stream
                QueryStream.Write(ByteQuery,0,ByteQuery.Length);
                QueryStream.Close();

                // Send the request and get a response. 
                HttpWebResponse HttpWResponse = (HttpWebResponse)HttpWRequest.GetResponse();

                // Get the status code.
                int iStatCode =  (int)HttpWResponse.StatusCode;
                string sStatus = iStatCode.ToString();
                Console.WriteLine("Status Code: {0}", sStatus);
                // Get the request headers.
                string sReqHeaders = HttpWRequest.Headers.ToString();
                Console.WriteLine(sReqHeaders);

                // Read the response stream
                Stream strm = HttpWResponse.GetResponseStream();
                StreamReader sr = new StreamReader(strm);
                string sText = sr.ReadToEnd();
                Console.WriteLine("Response: {0}", sText);

                // Close the stream.
                strm.Close();

                // Clean up.
                myCred = null;
                myCredentialCache = null;
                HttpWRequest = null;
                HttpWResponse = null;
                QueryStream = null;
                strm = null;
                sr = null;
       
            }
            catch (Exception e)
            {
                Console.WriteLine("{0} Exception caught.", e);
            }
        }
    }
}