Question

SOLVED:the method public override string[] GetRolesForUser(string username) was erroneously returning null as the first item of the array.All good now.

I am trying to implement custom role and membership providers for my application but not having luck with role provider. In one of my controller’s method, if I have [Authorize] directive it works fine but when I want to have role based authorization by adding [Authorize(Roles = "Admin")] it gives an error saying ‘Key cannot be null. Parameter name: key’ .

I think there is something wrong with the entires in web.config file but cannot find what it is. The modified entries in web.config file look like

<membership defaultProvider="CustomMembershipProvider">
      <providers>
        <clear />
        <add name="CustomMembershipProvider" type="eLibrary.Models.CustomMembershipProvider" connectionStringName="AppDb" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" />
      </providers>
    </membership>
    <roleManager defaultProvider="CustomRoleProvider" enabled="true" cacheRolesInCookie="true" >
      <providers>
        <clear/>
        <add name="CustomRoleProvider" type="eLibrary.Models.CustomRoleProvider" />
      </providers>
    </roleManager>

It would be great if anyone can throw some lights on.

Answer 1

SOLVED:the method public override string[] GetRolesForUser(string username) was erroneously returning null as the first item of the array.All good now.