SearchFilter.Exists class

Represents a search filter that determines whether a specific property is set.

Namespace:  Microsoft.Exchange.WebServices.Data
Assembly:  Microsoft.Exchange.WebServices (in Microsoft.Exchange.WebServices.dll)

public sealed class Exists : SearchFilter.PropertyBasedFilter

You can use this search filter to determine whether an e-mail message contains a Body property. This will enable you to build a collection of e-mails that have a specific property set.

Any public static ( in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.