MembershipCreateUserException - The username supplied is invalid

Question

On this line i am getting an exception -

OAuthWebSecurity.CreateOrUpdateAccount(provider, providerUserId, model.UserName);

System.Web.Security

Answer 1

According to MSDN (http://msdn.microsoft.com/en-us/library/82xx2e62.aspx) the Membership Class can't support usernames with a comma or null, spaces are OK (as are non ascii characters).

The CreateUser method will return null if password is an empty string or null, username is an empty string or null or contains a comma (,), passwordQuestion is not null and is an empty string, or passwordAnswer is not null and contains an empty string.