In a nutshell, you can control which provider is the "default" provider by 
setting the "defaultProvider" property that is on the <membership>, <roles>, 
<profile> elements in web.config.  When you do this, then calls to:

        Membership.ValidateUser(username, password)

And other methods on the Membership class will go to the default provider.  You 
can programmatically call another provider by accessing it via the "Providers" 
collection on the Membership/Roles API.  For example:

        Membership.Providers["otherprovider"].ValidateUser(username,password)

Note that the "otherprovider" name is determined by the <add/> element in your 
web.config file (where you give each provider a name).

Hope this helps,

Scott

-----Original Message-----
From: Discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] On Behalf 
Of Sébastien Lorion
Sent: Wednesday, November 29, 2006 6:06 AM
To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
Subject: Re: [ADVANCED-DOTNET] Multiple Membership Providers

You need to loop over System.Web.Security.Membership.Providers and
somehow find the provider you want, e.g. by checking its type and/or
some properties.

Sébastien

On 11/29/06, Angel Java Lopez <[EMAIL PROTECTED]> wrote:
> Hi people!
>
> At MSDN article:
>
> Membership Providers
> http://msdn2.microsoft.com/en-us/library/sx3h274z.aspx
>
> I read
>
> You can also configure multiple membership providers, which allows you to 
> select a membership provider at run time based on application requirements. 
> For example, for business reasons your membership information might be in 
> separate regional databases. By configuring multiple membership providers 
> that each interact with a different regional database, you can direct 
> membership calls to the appropriate provider for different users.
>
> But I can't found any sample code or explanation on how to specify the 
> membership provider to use at runtime.
>
> Any info, welcome!
>
> Angel "Java" Lopez
> http://www.ajlopez.com/en
> http://ajlopez.wordpress.com/
>
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