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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

ItemProperties Interface

A collection of all properties associated with the item.

Namespace:  Microsoft.Office.Interop.Outlook
Assembly:  Microsoft.Office.Interop.Outlook (in Microsoft.Office.Interop.Outlook.dll)

public interface ItemProperties : IEnumerable

Use the ItemProperties property to return the ItemProperties collection. Use ItemProperties.Item(index), where index is the name of the object or the numeric position of the item within the collection, to return a single ItemProperty object.


The ItemProperties collection is zero-based, meaning that the first item in the collection is referenced by 0.

Use the Add method to add a new item property to the ItemProperties collection. Use the Remove method to remove an item property from the ItemProperties collection.


You can only add or remove custom properties. Custom properties are denoted by the IsUserProperty .

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