如何在MailItem 3.5中创建Outlook MailItem？

Question

我已经在.Net 4.0中构建了下面的代码，它工作得很好，但是现在我必须在.Net 3.5中构建这个项目，并且在创建MailItem时会遇到一个错误。错误信息是:-

“‘无法隐式地将类型'object’转换为'microsoft.office.interop.outlook.olmailitem'”

 Outlook.Application application = new Outlook.Application();

    Outlook.Folder folder = 


        application.Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderDrafts) 
                        as Outlook.Folder;

    Outlook.MailItem mail =
                    application.CreateItem(Outlook.OlItemType.olMailItem);

    foreach (string name in addlist)
                {
                    mail.Recipients.Add(name);
                }

    mail.BodyFormat = Outlook.OlBodyFormat.olFormatHTML;
                mail.HTMLBody = msg;
                mail.Subject = textBox1.Text;
                mail.Save();

有人能帮忙吗？我在努力重新解决语法问题？

Answer 1

Outlook.Application.CreateItem返回一个对象(要准确地说是动态的)，您必须显式地将它转换为Outlook.MailItem，如下所示：

Outlook.MailItem mail = 
                application.CreateItem(Outlook.OlItemType.olMailItem) as Outlook.MailItem;