[2005] Downloading file

[navyjax2]

Thanks for the welcome. Ask and ye shall receive. I figured it out, though. I had several different variables defined - one for URL of the file, one of the file name, and a Uri variable. I think I had just mixed up which one was supposed to go where in the ContentDispostion section. I decided to just use strings instead of Uris, though... too prone to those "Uri format not supported" issues, as I saw. This code works, for the benefit of whomever needs this in the future... Sanitized for our protection :-).

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
using System.Security.Principal;
using System.Threading;
using System.Diagnostics;
using System.Windows.Forms;

    protected void Page_Load(object sender, EventArgs e)
    {
        // Decode and parse the received URL for the attachment
        string docUrl= (string)Request.QueryString["docUrl"];
        docUrl= docUrl.Replace("%2F", "/");
        docUrl= docUrl.Replace("+", " ");
        docUrl= docUrl.Replace("%3A", ":");
        docUrl= docUrl.Replace("%2D", "-");

         // Use a system thread to allow the web application to remain responsive
        Thread sendingThread = new Thread(SendMailMessage);
        
        // Send the URI to the Thread.Start method
        sendingThread.Start(docUrl);

        Response.Write("Your request has been submitted. Thank you.");
    }

    public void SendMailMessage(object url)
    {  
        // Set the variables
        string docUrl = (string)url;
        String tempFolderPath = Path.GetTempPath();
        MailMessage message = new MailMessage();
        SmtpClient mailClient = new SmtpClient("localhost");
        Stream contentStream;
        string toEmail;
        string localComputer = System.Environment.MachineName;
        string userId = WindowsIdentity.GetCurrent().Name.ToString();
        string[] userName = new string[1];
        char[] splitter = { '\\' };

        // Set the e-mail address
        userName = userId.Split(splitter);
        userId = userName[1];
        toEmail = userId + "@ourdomain.com";

        // Set the parentUrl and msgId
        string parentUrl = "";
        string[] urlArray = new String[7];
        urlArray = msgUrl.Split('/');
        for (int i = 0; i < 7; i++)
        {
            parentUrl += urlArray[i] + "/";
        }
        parentUrl = parentUrl.Remove((parentUrl.Length - 1), 1);
        string msgId = urlArray[7];

        try
        {
            // Establish the message
            message.From = new MailAddress("[email protected]");
            message.Sender = new MailAddress("[email protected]");
            message.To.Add(toEmail);
            message.Subject = "Your Message Result";
            message.IsBodyHtml = true;
            message.Body = "<p>Attached you should find the message you requested.  Have a nice day! :-)</p>";
            
            // Get the file name for this attachment
            // (done in case it's necessary to have the name)
            string[] fileName = docUrl.Split('/');
            string file = fileName[fileName.Length - 1];

            // Use Integrated Authentication to check for a matching message directory
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(docUrl);                
            request.Credentials = CredentialCache.DefaultCredentials;
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            if (response.ContentLength > 0)  // if the file is found
            {  
                contentStream = response.GetResponseStream();

                // Uses the file name found by splitting on the URL
                Attachment data = new Attachment(contentStream, file, response.ContentType);

                // Add the information for the file
                ContentDisposition disposition = data.ContentDisposition;
                disposition.FileName = file;
                disposition.CreationDate = File.GetCreationTime(file);
                disposition.ModificationDate = File.GetLastWriteTime(file);
                disposition.ReadDate = File.GetLastAccessTime(file);

                // Add the file attachment to this e-mail message.
                message.Attachments.Add(data);

                // Set up the SMTP Request
                try
                {
                    // Send the message
                    // Add credentials if the SMTP server requires them.
                    mailClient.Credentials = CredentialCache.DefaultNetworkCredentials;
                    mailClient.Send(message);
                }
                catch (SmtpException mailException)
                {
                    // SMTP may not be enabled, relaying permissions may be denied, 
                    // or the network went down
                    EventLog ev = new EventLog("Application");
                    ev.Source = "E-mailFwd";
                    ev.Log = mailException.Message;
                }
                finally
                {
                    contentStream.Dispose();
                    response.Close();
                }

            }
            else
            {
                // The remote file server didn't like our request, or was busy. 
                // Log it and send an e-mail to the sender it didn't work.
                EventLog ev = new EventLog("Application");
                ev.Source = "E-mailFwd";
                ev.Log = "Request made by " + userId + " for " + file + " failed.";

                // Establish the message
                message.From = new MailAddress("[email protected]");
                message.Sender = new MailAddress("[email protected]");
                toEmail = userId + "@ourdomain.com";
                message.To.Add(toEmail);
                message.Subject = "Your Message Result - FAILURE";
                message.IsBodyHtml = true;
                message.Body = "<p>Your message could not be retrieved from the archive.  Please inform the Systems Administrator.</p><p>Respectfully,</p><p>- Us</p>";

                // Set up the SMTP Request
                try
                {
                    // Send the failure message
                    // Add credentials if the SMTP server requires them.
                    mailClient.Credentials = CredentialCache.DefaultNetworkCredentials;
                    mailClient.Send(message);
                }
                catch (SmtpException mailException)
                {
                    // SMTP may not be enabled, relaying permissions may be denied, 
                    // or the network went down
                    ev.Source = "E-mailFwd";
                    ev.Log = mailException.Message;
                }
                finally
                {
                    response.Close();
                }
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        } 
    }

Hope this helps someone.

-Tom