1 public static int SendToDraft(List<string> to, List<string> cc, List<string> bcc, string subject, string content, List<string> attachments, ref string errorMessage) 2         { 3             int result = -1; 4             try 5             { 6                 StringBuilder sbattachment = new StringBuilder(); 7                 Application objOutlook = new Application(); 8                 NameSpace oNameSpace = objOutlook.GetNamespace("MAPI"); 9                 MAPIFolder folder = oNameSpace.GetDefaultFolder(OlDefaultFolders.olFolderDrafts);10                 MailItem item = (MailItem)(objOutlook.CreateItem(OlItemType.olMailItem));11                 item.To = GetString(to);12                 item.CC = GetString(cc);13                 item.BCC = GetString(bcc);14                 item.Subject = subject;15                 item.HTMLBody = content;16                 new Log("send email outlook ").Write("7");17                 //添加附件18                 if (attachments != null && attachments.Count > 0)19                 {20                     for (int i = 0; i < attachments.Count; i++)21                     {22                         item.Attachments.Add(@attachments[i]);23                     }24                 }25                 item.SaveSentMessageFolder = folder;26                 item.Save();27                 result = 0;28             }29             catch (System.Exception ex)30             {31                 result = -3;32                 errorMessage = ex.Message.ToString();33             }34             return result;35         }