Article ID: 292062 - View products that this article applies to.
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If you are using the Outlook object model to loop through items in a folder, you should make sure your solution will work even if the folder contains items that you might not expect to be there.
Examples of items that you might unexpectedly find in a folder include:
NOTE: In Outlook 98 (using Internet Mail Only mode), these distibution lists could exist in the folder but were not visible through the user interface. They were created and stored by the Windows Address Book.
Typically you will not run into problems when your code references one of these items. Problems usually occur when you try to reference a property of a particular item type and that property does not exist.
Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs.
If you have limited programming experience, you may want to contact a Microsoft Certified Partner or Microsoft Advisory Services. For more information, visit these Microsoft Web sites:
Microsoft Certified Partners - https://partner.microsoft.com/global/30000104
Microsoft Advisory Services - http://support.microsoft.com/gp/advisoryservice
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
(http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS)The following are approaches you can use to avoid these types of problems. Choose the approach that is best suited to your solution, the type of folder you are working with, and the types of items that could potentially affect your solution.
For additional information about available resources and answersto commonly asked questions about Microsoft Outlook solutions, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/287530/EN-US/ )OL2002: Questions About Custom Forms and Outlook Solutions
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.