So, it seems to me, that I have to implement my own membership provider when I wan't to have more than one member type working with the UmbracoMembershipProvider. I have tried this, but I'm having some trouble getting all the way through.

In Umbraco I have created a member type called, lets say, NewMemberType.
I added a new membership provider in the web.config as so:

<add name="NewMembershipProvider"
             type="project.MembershipProviders.NewMembershipProvider"
             defaultMemberTypeAlias="NewMemberType"
             enablePasswordRetrieval="false"
             enablePasswordReset="false"
             requiresQuestionAndAnswer="false"
             passwordFormat="Hashed"/>

I then implemented the new very basic membership provider, as so:

namespace project.MembershipProviders
{
    public class NewMembershipProvider : umbraco.providers.members.UmbracoMembershipProvider
    {
        public MembershipUser CreateUser(string username, string password, string email)
        {
            MembershipCreateStatus status;
            return CreateUser(username, password, email, null, null, true, out status);
        }

        public MembershipUser CreateUser(string username, string password, string email, string passwordQuestion, string passwordAnswer, bool isApproved, out MembershipCreateStatus status)
        {
            return CreateUser(username, password, email, passwordQuestion, passwordAnswer, isApproved,
null, out status);
        }

        public MembershipUser CreateUser(string username, string password, string email, string passwordQuestion, string passwordAnswer, bool isApproved, object providerUserKey, out MembershipCreateStatus status)
        {
            return base.CreateUser(username, password, email, passwordQuestion, passwordAnswer,
isApproved, providerUserKey, out status);
        }
    }
}

Now, when I try to create a member using the following code:

var provider = new project.MembershipProviders.NewMembershipProvider();
var member = provider.CreateUser("mads.krohn", "tester", "[email protected]");

I get a NullReferenceException. Following is a part of the callstack:

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.cms.businesslogic.Content.CreateContent(ContentType ct) +188
   umbraco.cms.businesslogic.member.Member.MakeNew(String Name, String LoginName, String Email, MemberType mbt, User u) +662
   umbraco.cms.businesslogic.member.Member.MakeNew(String Name, String Email, MemberType mbt, User u) +55
   umbraco.providers.members.UmbracoMembershipProvider.CreateUser(String username, String password, String email, String passwordQuestion, String passwordAnswer, Boolean isApproved, Object providerUserKey, MembershipCreateStatus& status)
   project.MembershipProviders.NewMembershipProvider.CreateUser(String username, String password, String email, String passwordQuestion, String passwordAnswer, Boolean isApproved, Object providerUserKey, MembershipCreateStatus& status)
   project.MembershipProviders.NewMembershipProvider.CreateUser(String username, String password, String email, String passwordQuestion, String passwordAnswer, Boolean isApproved, MembershipCreateStatus& status)
   project.MembershipProviders.NewMembershipProvider.CreateUser(String username, String password, String email)

Now, using Reflector, I know, that UmbracoMembershipProvider.CreateUser() at some point calls the Member.MakeNew() function with the value of this.m_DefaultMemberTypeAlias as the member type.

My guess it that the member type isn't found and null is returned in the MemberType.GetByAlias() method, causing the final Content.CreateContent() method to fail.

So, I know I have a missing link somewhere, I just can't put my head around where. Heck, I might even be on the wrong track but any help would be highly appreciated!!

Kind regards,
Mads