Gets the user identifier from the membership data source for the user.
Assembly: System.Web.ApplicationServices (in System.Web.ApplicationServices.dll)
The property exposes the identifier from the membership data source typed as object. The type of the identifier depends on the MembershipProvider or the MembershipUser. In the case of the SqlMembershipProvider, the can be cast as a Guid, since the SqlMembershipProvider stores the user identifier as a UniqueIdentifier.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.