For Each 循环不删除所有项目 [英] For Each loop not deleting all items

问题描述

我有一个宏，它应该在我退出 Outlook 2007 时删除超过 'x' 天的电子邮件，但它似乎只删除了其中的一些，当我打开它并再次退出时，它删除了其余的.代码如下:

I have a macro which is supposed to delete emails over 'x' amount of days old when I quit Outlook 2007 but it only seems to delete a few of them and when I open it and quit again it deleted the rest. Here is the code:

Private Sub Application_Quit()

Dim myOlApp, myNameSpace As Object
Dim MyItem As Object
Dim DeletedFolder As Object

Set myOlApp = CreateObject("Outlook.Application")
Set myNameSpace = myOlApp.GetNamespace("MAPI")
'Set DeletedFolder = myNameSpace.GetDefaultFolder(olFolderDeletedItems)
Set DeletedFolder = myNameSpace.GetDefaultFolder(olFolderInbox).Folders("Auto")

For Each MyItem In DeletedFolder.Items
If DateDiff("d", MyItem.ReceivedTime, Now) > 7 Then
MyItem.Delete
End If
Next

End Sub

在本例中，我在收件箱文件夹下的自动文件夹中选择了 7 天以上.知道为什么第一次不删除它们吗?

In this example I chose greater than 7 days old in the Auto folder under my Inbox folder. Any ideas why it does not delete them all the first time?

谢谢

推荐答案

通常在删除时需要不同类型的迭代:

Generally when deleting you need a different sort of iteration:

Dim m as Long
For m = DeletedFolder.Items.Count to 1 Step -1
    Set myItem = DeletedFolder.Items(m)
    If DateDiff("d", MyItem.ReceivedTime, Now) > 7 Then
        MyItem.Delete
    End If
Next

这是因为，当您从集合中删除一个元素时，该集合会重新建立索引.所以你需要在集合中向后退一步，否则你会跳过"一些项目.

This is because, as you delete an element from the collection, the collection is re-indexed. So you need to step backwards through the collection, otherwise you will "skip" some items.

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