The IsAlias property of the Property class gets or sets a value indicating whether this user profile property serves as the alias of the user.
true if this user profile property is related to the user's name and account in portal site operations and search results; otherwise, false.
Aliases are treated as equivalent to the user name and account name when searching for items authored by a user, targeting items to a user, or displaying items in the My Documents Web Part of the personal site for a user. Alias properties must be public.
Platforms: Microsoft Windows Server 2003
Security: Code Access Security