How to consume direct link to identity provider with azure B2C?

Question

Hello,

I would like to consume third party identity provider in my application.
B2C provide a MSAL WebView authentication with pre-generated or custom page layout (with username, password, and button for social providers).
like below

But I would like to create my own native button, that will open directly the web view on a specific identity provider.
Does Microsoft provide such flow without using the pre-generated or custom page layout, but redirect instantly to the Identity provider?

If Microsoft does not, where can suggest new feature, enhancement and vote for them?

Let me know,
Regards :)

Answer 1

The goal is to use the domain_hint parameter
For example if the application specifies domain_hint=facebook.com, sign-in goes directly to the Facebook sign-in page.

Url Parameter:

"https://{tenant}.b2clogin.com/{tenant}.onmicrosoft.com/{policy}/oauth2/v2.0/authorize?client_id{ClientId}&response_type=code&scope={Scope}&domain_hint=facebook.com"  

Code:

let loginRequest = {  
     extraQueryParameters: {domain_hint: 'facebook.com'}  
}  
myMSALObj.loginPopup(loginRequest);  

Here two Microsoft doc links that explain how to do it.

• preselect-an-identity-provider
• redirect-sign-in-to-a-social-provider

Answer 2

Hi VicePhenek-7065,

Welcome to our Microsoft Q&A platform!

To achieve authentication, Xamarin.Forms provides the Xamarin.Essentials: Web Authenticator.

There are also some Nuget packages, such as Microsoft.Identity.Client and Xamarin.Auth, you can refer to.

If you have any feature request, you can submit on GitHub: xamarin/Xamarin.Forms.

Regards,
Kyle

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Answer 3

Hi @Kyle Wang ,

Thanks I am glad to have a Community expert to this topic.
I have already a question about Web Authenticator.
And I don't think this feature about B2C should be submitted to Xamarin.forms GitHub (even if they have ended all enhancement to the profit of maui)

We would prefer any B2C GitHub,
because my question was all about B2C and it's available User Flow and specifically how to preselect an identity provider?