Cast of Custom Role Provider

Hi

I have custom membership and role providers. To get my membership to work I did the following:

  DirectCast(Membership.Provider, HCCBase.SecurityModel.CustomMemberProvider).DeleteUser("", True, UserNameToDelete)

As what do I cast my RoleProvider?

 DirectCast(Roles.Provider, HCCBase.SecurityModel.CustomRoleProvider).GetAllRoles()

It says Provider is not member of Roles

Please help.