打开Outlook时，Microsoft.Office.Interop.Outlook确认电子邮件不起作用

Question

I am trying to send a confirmation email when a user submits a form. I had privlage problems with smtp so I am trying to do it through Outlook. The code works fine enter link description here when Outlook isn't open but just hangs when it is. Any ideas how to fix this or ways around it?

try
{

// Create the Outlook application.
Outlook.Application oApp = new Outlook.Application();

// Create a new mail item.
Outlook.MailItem oMsg = (Outlook.MailItem)oApp.CreateItem(Outlook.OlItemType.olMailItem);
// Set HTMLBody. 
//add the body of the email
oMsg.HTMLBody = "Hello, Jawed your message body will go here!!";

//Subject line
oMsg.Subject = "Your Subject will go here.";

 // Add a recipient.
Outlook.Recipients oRecips = (Outlook.Recipients)oMsg.Recipients;
// Change the recipient in the next line if necessary.
Outlook.Recipient oRecip = (Outlook.Recipient)oRecips.Add("email@address.com");
oRecip.Resolve();

// Send.
((Outlook._MailItem)oMsg).Send();


// Clean up.
System.Runtime.InteropServices.Marshal.FinalReleaseComObject(oMsg);
System.Runtime.InteropServices.Marshal.FinalReleaseComObject(oRecip);
System.Runtime.InteropServices.Marshal.FinalReleaseComObject(oRecips);
System.Runtime.InteropServices.Marshal.FinalReleaseComObject(oApp);
}//end of try block

catch (Exception ex)
{
}//end of catch

Answer 1

Try checking to see if there is an instance of Outlook already open, if there is one use it to send the mail. If not then create the new instance.

(Untested) this should get you started:

Outlook.Application oApp;
try { 
    oApp = (Outlook.Application)Marshal.GetActiveObject("Outlook.Application"); 
}
catch () {
    oApp = new Outlook.Application();
}

// use oApp to send the stuff, it will either be the existing instance or a new instance