Microsoft KB Archive/218287

= OL2000: Items Collection Doesn't Support Varying Item Types =

Article ID: 218287

Article Last Modified on 11/23/2006

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APPLIES TO


 * Microsoft Outlook 2000 Standard Edition

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This article was previously published under Q218287



SYMPTOMS
You use the Items collection to refer to a group of items in a folder, but you cannot use various methods in the Outlook object model if a property of an item is not available on the default item type for that folder.



CAUSE
The Items collection in the Outlook object model does not support different types of items in the same folder. The methods most commonly affected include Find, Restrict, Sort, SetColumns, and the UserProperties.Find method. These methods will only work correctly when used with properties that match the default item type for a folder.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
This problem will most likely occur when trying to use the DistListItem object in the Contacts folder. By default, the Contacts folder is the only Outlook folder that contains different types of items.

The DistListItem contains two properties that are not available on a ContactItem, DLName and MemberCount.

Steps to Reproduce the Problem
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https://partner.microsoft.com/global/30000104

For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS


 * 1) Make sure you have some distribution lists in your default Contacts folder. To create a distribution list, on the File menu, point to New and then click Distribution List.
 * 2) Set a referenc to the Microsoft Outlook 9.0 Object Library and then run the following automation code:

Sub RestrictDistList Dim ol As Outlook.Application Dim oConFolder As Outlook.MAPIFolder Dim oDistItems As Items Dim oResItems As Items

Set ol = New Outlook.Application Set oConFolder = ol.Session.GetDefaultFolder(olFolderContacts) Set oConItems = oConFolder.Items Set oDistItems = oConItems.Restrict("[MessageClass] = 'IPM.DistList'") Set oResItems = OItems.Restrict("[DLName] > 'k'") End Sub The last line of code will cause an error because the DLName property exists only on a DistListItem, and not a ContactItem.

