Linda:

Check this: 

RoleController.AddUserRole(PortalID, UserID, RoleID, ExpiryDate)

Edit: You can also do this to use the role name if you don't know the RoleID: 

RoleController.AddUserRole(PortalID, UserID, RoleController.GetRoleByName(PortalID, "RoleNameString").RoleID, ExpiryDate)

I think this is the more "proper" way.

Carlos

Carlos,

I have code that is similar to that which you posted and it worked GREAT in DNN3.  But then my site migrated to DNN4 and now this code SOMETIMES assigns users to the role and sometimes it doesn't.  I'm not sure what the issue is but Mitch Sellers worked on this module for a little bit and he said the issue was due to a bug in DotNetNuke.  Have you heard this?  Here is my code:

' Now give role access
Dim TheRoleName As String
Dim TheRoleID As Integer
If RequestInfo.InstructorPilot Then TheRoleName = "AF-IP"
If RequestInfo.StudentPilot Then TheRoleName = "UPTstud"
If (Not RequestInfo.InstructorPilot) And (Not RequestInfo.StudentPilot) Then TheRoleName = "AF-PilotSelect"
Dim RoleController As New DotNetNuke.Security.Roles.RoleController
Dim RoleInfo As New DotNetNuke.Security.Roles.RoleInfo
RoleInfo = RoleController.GetRoleByName(Me.PortalId, TheRoleName)
TheRoleID = RoleInfo.RoleID
RoleController.AddUserRole(Me.PortalId, OurUserID, TheRoleID, Null.NullDate)