What Assembly contains 'Session'

[brat33]

I am modifying the following code, and continue to get a error message stating:
The type or namespace name 'Session' could not be found (are you missing a using directive or an assembly reference?)

This is my code:

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Net;
using System.Net.Mail;
using System.ServiceProcess;
using System.Timers;
using System.IO;
using System.Reflection;
using MySql.Data.MySqlClient;
 
namespace EmailMaintHelpDesk
{
    public class EmailToMaintTicketService : System.ServiceProcess.ServiceBase
    {
        private const string EmailServer = "mail";
        private const string EmailAccount = "mail\nmainthd";
        private const string ITEmail = "email goes here";
        private const string LogFilePath = "C:\\EmailHk\\logs\\EmailHk.log";
        private const string TTSExePath = "c:\\soe\\cgi-bin\\tts-cmd.exe";
        private const string TTSExeWorkingDirectory = "c:\\soe\\cgi-bin\\";
        private const string AttachmentFolder = "c:\\SOE\\pub\\attachments";
        private const string ttsConnectionString = "Server=localhost;Database=NAME;Uid=ID;Pwd=PW";
        private const int TimerInterval = 120000;
        private System.ComponentModel.Container components = null;
        private Timer serviceTimer = null;
        private StreamWriter log = null;
        private Session mapiSession = null;
 

Then of course mapiSession is referenced throughout the program in various places. I am not sure what Assembly I need to add in order to get Session recognized and usable. Any assistance would be greatly appreciated. I am also getting the same error on "AddressEntry" below.

private string GetEmailAddress(AddressEntry emailSender)
        {
            string exchangeAddress = emailSender.Address.ToString().ToLower();
 
            int aliasStart = exchangeAddress.LastIndexOf("=") + 1;
            int aliasLength = exchangeAddress.Length - aliasStart;
            if (aliasStart > 0) 
            {
                string alias = exchangeAddress.Substring(aliasStart, aliasLength);
                return String.Format("{0}@something.com", alias);
            } 
            else 
            {
                log.WriteLine(DateTime.Now.ToString() + ": Sender email couldnt be determined -> " + exchangeAddress);
                return "email goes here";
            }
        }
 

Again AddressEntry is referenced throughout the rest of the code as well.

This also is happening on 'Attachments'

private void ProcessAttachments(Attachments messageAttachments, 
            double unixTimestamp) 
        {
            int numberOfAttachments = (int) messageAttachments.Count;
            if (numberOfAttachments == 0) 
                return;
            int ticketNo = GetTicketNumber(unixTimestamp);
            for (int i=1; i<numberOfAttachments+1; i++) {
                Attachment messageAttachment 
                    = (Attachment) messageAttachments.get_Item(i);
                string filename = (string) messageAttachment.Name;
                string attachmentPath = String.Format(
                    "{0}\\{1}-1\\{2}",
                    AttachmentFolder, 
                    ticketNo, 
                    filename
                );
         log.WriteLine(attachmentPath);
                messageAttachment.WriteToFile(attachmentPath);
                UpdateAttachmentsTable(filename, ticketNo);
            }
        }
 

If anyone can assist me on what assemblies need to be referenced, or what I am doing wrong - I would really appreciate it!

[Curtis Rutland]

Probably the Microsoft.Office.Interop.Outlook namespace in the Microsoft.Office.Interop.Outlook.dll dll.

[brat33]

When I try to add the line of code "Using Microsoft.Office.Interop.Outlook", I receive a error message that Office is not valid for namespace Microsoft. Would I just need to reference this within the solution for the dll? I am not sure what to do with this piece of information. I was expecting to add another USING line at the top of the page, but this does not seem to be the case.

[Curtis Rutland]

Well, if it's this AddressEntry, you'll have to add a reference to Microsoft.Office.Interop.Outlook.dll to your project.

Look at the error message:

(are you missing a using directive or an assembly reference?)

Lots of people don't know about the second half. You have to add a reference to a DLL before you can reference a namespace defined in that DLL. Visual Studio automatically references several DLLs for you by default, which is why just adding the Using directives is enough for them.

Using directives are a convenience; syntactic sugar. References are not.

Once you've added the reference, then you can add the using directive.

[brat33]

Thanks for the additional info - that did take care of two of my three issues.

The type or namespace name 'Session' could not be found (are you missing a using directive or an assembly reference?)

Would you happen to know what I need to reference in order to use Session?

Thank you so very much with the help on the other two - I have been fighting with this for over a week...Was sure I would be able to figure it out, but no luck!

[Curtis Rutland]

I honestly don't know what assembly that object is from. You haven't really given much context. But I haven't worked with this kind of thing, so I really don't know what it might be.

I'd suggest trying to find documentation from whomever you inherited this code from.

[brat33]

Thanks again for all of your help! I was able to figure it out - I added a few more references and it seemed to accomplish what I wanted it to! Just took some more searching in addition to what I had already found! Session is in the System.Web.Mail reference!

[Curtis Rutland]

Glad you found it. Just so you know, System.Web.Mail is pretty obsolete now. If you're developing new email applications, use System.Net.Mail.