10 lines
449 B
Markdown
10 lines
449 B
Markdown
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When the app requires multiple providers, chain the provider extension methods behind [AddAuthentication](/dotnet/api/microsoft.extensions.dependencyinjection.authenticationservicecollectionextensions.addauthentication):
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```csharp
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services.AddAuthentication()
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.AddMicrosoftAccount(microsoftOptions => { ... })
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.AddGoogle(googleOptions => { ... })
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.AddTwitter(twitterOptions => { ... })
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.AddFacebook(facebookOptions => { ... });
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```
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