multiple asp.net membership providers

Question

I have created two custome membership providers that I would like to add to my web.config. The first one would be the default that the asp.net application would use. The second would be called by a WCF service that I have in the same application.

The providers in the membership section of my web.config looks like the following:

    <add name="SiteProvider" type="MyNameSpace.SiteProvider, MyNameSpace" ApplicationName="Si2" EnablePasswordReset="true" PasswordStrengthRegularExpression="(?=[\w$#_ ]{8,})(?=.*?\d)(?=.*?[A-z])[\w$#_ ]*" ResetPasswordMinimumLength="8" ResetPasswordPattern="USL9SLU9SLU9SLLLL" ResetPasswordAllowDuplicateCharacters="false" />
    <add name="WCFProvider" type="MyNameSpace.WCFProvider, MyNameSpace" ApplicationName="Si2" EnablePasswordReset="true" PasswordStrengthRegularExpression="(?=[\w$#_ ]{8,})(?=.*?\d)(?=.*?[A-z])[\w$#_ ]*" ResetPasswordMinimumLength="8" ResetPasswordPattern="USL9SLU9SLU9SLLLL" ResetPasswordAllowDuplicateCharacters="false" />

I receive the error "Item has already beed added. Key in dictionary: 'SiteProvider' Key being added: 'SiteProvider'" any time I browse to the site.

This doesnt make sense to me sense they have unique names. If i remove the second provider the site is browseable.

Any help on adding this second provider would be appreciated.

Daniel Dyson Daniel Dyson · Accepted Answer · 2010-09-02T13:17:38

The simplest solution would be to move the webservice into a different project.

Also, make sure you call <clear/> before adding providers and include a default one...

<membership defaultProvider="Siteprovider">
    <providers>
        <clear/>
        <add name="SiteProvider" type="MyNameSpace.SiteProvider, MyNameSpace" ApplicationName="Si2" EnablePasswordReset="true" PasswordStrengthRegularExpression="(?=[\w$#_ ]{8,})(?=.*?\d)(?=.*?[A-z])[\w$#_ ]*" ResetPasswordMinimumLength="8" ResetPasswordPattern="USL9SLU9SLU9SLLLL" ResetPasswordAllowDuplicateCharacters="false" />
        <add name="WCFProvider" type="MyNameSpace.WCFProvider, MyNameSpace" ApplicationName="Si2" EnablePasswordReset="true" PasswordStrengthRegularExpression="(?=[\w$#_ ]{8,})(?=.*?\d)(?=.*?[A-z])[\w$#_ ]*" ResetPasswordMinimumLength="8" ResetPasswordPattern="USL9SLU9SLU9SLLLL" ResetPasswordAllowDuplicateCharacters="false" />
    </providers>
</membership>

You could try the solution in this forum post: http://forums.asp.net/p/1112089/1714276.aspx

Have you tried putting a separate web.config file in the webservice folder? I doubt that it will work, but it might be worth a try.

multiple asp.net membership providers

1 Answers