Question

I am writing a project in asp.net C# using Visual Studio 2010.
I want to write function, which opens outlook window to send email when user clicks a button.

I tried this:

using Outlook = Microsoft.Office.Interop.Outlook;

Outlook.Application oApp    = new Outlook.Application ();
Outlook._MailItem oMailItem = (Outlook._MailItem)oApp.CreateItem ( Outlook.OlItemType.olMailItem );
oMailItem.To    = address;
// body, bcc etc...
oMailItem.Display ( true );

But compiler says there is no namespace Office inside namespace Microsoft.
Actually Microsoft Office including Outlook fully installed in my computer.

Should I include Office library to Visual Studio?
How the problem can be solved?

Answer 1

If you use Microsoft.Office.Interop.Outlook, Outlook must be installed on the server (and runs on the server, not on user computer).

Have you tried using SmtpClient?

 System.Net.Mail.MailMessage m = new System.Net.Mail.MailMessage();
        using (m)
        {
            //sender is set in web.config:   <smtp from="my alias &lt;[e-mail]&gt;">
            m.To.Add(to);
            if (!string.IsNullOrEmpty(cc))
                m.CC.Add(cc);
            m.Subject = subject;
            m.Body = body;
            m.IsBodyHtml = isBodyHtml;
            if (!string.IsNullOrEmpty(attachmentName))
                m.Attachments.Add(new System.Net.Mail.Attachment(attachmentFile, attachmentName));

            System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
            try
            { client.Send(m); }
            catch (System.Net.Mail.SmtpException) {/*errors can happen*/ }
        }