public override void AddUsersToRoles( 
   string[] usernames,
   string[] roleNames
)

Parameters

usernames

A string array of user names to be added to the specified roles.

roleNames

A string array of the role names to add the specified user names to.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

AbleCommerceRoleProvider Class
AbleCommerceRoleProvider Members
Base Implementation in AddUsersToRoles