C#Outlook没有移动所有电子邮件

我正在使用Outllok Interop将电子邮件从一个文件夹移动到另一个文件夹(在获取所有附件之后,但这有效)但它不会复制所有电子邮件.我已经尝试过等待,但它没有效果.首先它会移动6,然后移动3,然后移动1.可以有人告诉我它为什么不移动它们？

相关代码如下：

Application oOutlook = new Application();
NameSpace oNs = oOutlook.GetNamespace("MAPI");

Recipient oRep = oNs.CreateRecipient("ContentHelp");
MAPIFolder inbox = oNs.GetSharedDefaultFolder(oRep, OlDefaultFolders.olFolderInbox);

MAPIFolder nihSub = inbox.Folders["NIH"];
MAPIFolder nihArchive = inbox.Folders["NIHarchive"];
Items nihItems = nihSub.Items;
MailItem moveMail = null;
//inboxItems = inboxItems.Restrict("[Unread] = false");

int increment = 0;

try
{
    foreach (object collectionItem in nihItems)
    {
        moveMail = collectionItem as MailItem;
        if (moveMail != null)
        {
            Console.WriteLine("Moving {0}", moveMail.Subject.ToString());
            string titleSubject = (string)moveMail.Subject;
            moveMail.Move(nihArchive);
        }
    }
}

每次循环移动时,索引都会重置,因此您永远不会超过一半的项目. 使用从olItems.Count到1的While循环或倒计时.