Get the User ID from the authnrequest

Hello.
I’m a beginner with SSO SAML.
I would like to know if it is possible to get the user ID in an authnrequest from an SP to a IDP with an IDPSsoResult?
Thank you

Yes. This is available in the IdPSsoResult.SsoOptions.RequestUserName property.
Please note that many SPs don’t include a user name in the SAML authn request.

[quote]
ComponentSpace - 8/1/2018
Yes. This is available in the IdPSsoResult.SsoOptions.RequestUserName property.
Please note that many SPs don't include a user name in the SAML authn request.
[/quote]

Thank you very much.
The SPs linked to my IDP must give this ID.

You’re welcome.