只能通过Outlook发送电子邮件如果Outlook打开 [英] Can only send email via Outlook if Outlook is open

问题描述

我想用描述通过Outlook发送电子邮件<一个href=\"http://www.$c$cproject.com/Tips/165548/C-$c$c-snippet-to-send-an-Email-with-attachment-fr\">here.它只要我已经打开Outlook中正常工作。因此，例如，如果Outlook被最小化，我执行我的code，那么我可以发送电子邮件就好了。但是，如果Outlook关闭，然后我得到一个异常：

I want to use send emails via Outlook as described here. It works fine as long as I have already opened Outlook. So for example if Outlook is minimized and I execute my code, then I can send an email just fine. But if Outlook is closed, then I get an exception:

{System.Runtime.InteropServices.COMException (0x80004004): Operation aborted (Exception from HRESULT: 0x80004004 (E_ABORT))
   at Microsoft.Office.Interop.Outlook._MailItem.get_Recipients()
   at OutlookExample.Form1.btnSendEmail_Click(Object sender, EventArgs e) in C:\Users\abc\Documents\Visual Studio 2008\Projects\OutlookExample\OutlookExample\Form1.cs:line 28}

下面是code：

using Outlook = Microsoft.Office.Interop.Outlook;

...

private void btnSendEmail_Click(object sender, EventArgs e)
{
    try
    {
        Outlook.Application oApp = new Outlook.Application();
        Outlook.MailItem oMsg = Outlook.MailItem)oApp.CreateItem(Outlook.OlItemType.olMailItem);
            oMsg.HTMLBody = "Hello, here is your message!";
            oMsg.Subject = "This is a test message";
            Outlook.Recipients oRecips = (Outlook.Recipients)oMsg.Recipients;
            Outlook.Recipient oRecip = (Outlook.Recipient)oRecips.Add("[e-mail]");
            oRecip.Resolve();
            oMsg.Send();
            oRecip = null;
            oRecips = null;
            oMsg = null;
            oApp = null;
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }
}

修改：这里是解决方案

using Outlook = Microsoft.Office.Interop.Outlook;

...

private void btnSendEmail_Click(object sender, EventArgs e)
{
    try
    {
        Outlook.Application oApp = new Outlook.Application();

        // These 3 lines solved the problem
        Outlook.NameSpace ns = oApp.GetNamespace("MAPI");
        Outlook.MAPIFolder f = ns.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
        System.Threading.Thread.Sleep(5000); // test

        Outlook.MailItem oMsg = Outlook.MailItem)oApp.CreateItem(Outlook.OlItemType.olMailItem);
            oMsg.HTMLBody = "Hello, here is your message!";
            oMsg.Subject = "This is a test message";
            Outlook.Recipients oRecips = (Outlook.Recipients)oMsg.Recipients;
            Outlook.Recipient oRecip = (Outlook.Recipient)oRecips.Add("[e-mail]");
            oRecip.Resolve();
            oMsg.Send();
            oRecip = null;
            oRecips = null;
            oMsg = null;
            oApp = null;
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }
}

为什么不这项工作？

Why doesn't this work?

推荐答案

以下code具有工作可靠个月对我来说：

The following code has reliably worked for months for me:

            app = new Microsoft.Office.Interop.Outlook.Application();
            Microsoft.Office.Interop.Outlook.NameSpace ns = app.GetNamespace("MAPI");
            f = ns.GetDefaultFolder(OlDefaultFolders.olFolderInbox);
            Thread.Sleep(5000); // a bit of startup grace time.

如果前景打开它使用它，如果不是它打开了它。当然，如果您的Outlook需要您登录，您的code不会允许对。有些系统很难让你自动登录。

if outlook was open it uses it, if not its opened it. Of course, if your outlook requires you to login, your code wont allow for that. Some systems make it difficult for you to auto login.

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