C# – Enable/ Create SSO (Single Sign On) in Asp.Net MVC applications

asp.net-mvcasp.net-mvc-3authenticationcsingle-sign-on

I want to implement/enable SSO (Single Sign On) on my Asp.Net MVC applications.

Please consider the points below below for your kind suggestions:

I have 3 Asp.Net MVC applications where I want to enable SSO for them.
I know I can achieve SSO by ADFS (Active directory Federation Services), but I don't want to use it as I want my external users (end-users) to login in all my 3 applications via SSO.
(Correct me If I wrong here because as far as I know, ADFS can be used for Active Directory users (meaning company-wide internal users) and not for external end-users. If we can use ADFS for external users, please do let me know how we should achieve it.
I also don't want to use OpenID.
I want to build SSO own for these 3 applications and want to enable SSO between them.
I want to build SSO that can be used in production environment for
these 3 applications.

Could you please give me your suggestions on it about how would I achieve SSO by considering all above points?

Thanks in advance and all suggestions are welcome!

Best Answer

Are your applications in the same domain? If so, can you use Forms Authentication Across Applications?

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For MVC v5 use EnumHelper

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For MVC 5 and lower

I rolled Rune's answer into an extension method:

namespace MyApp.Common
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[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class MultipleButtonAttribute : ActionNameSelectorAttribute
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razor:

<form action="" method="post">
 <input type="submit" value="Save" name="action:Save" />
 <input type="submit" value="Cancel" name="action:Cancel" />
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and controller:

[HttpPost]
[MultipleButton(Name = "action", Argument = "Save")]
public ActionResult Save(MessageModel mm) { ... }

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public ActionResult Cancel(MessageModel mm) { ... }

Update: Razor pages looks to provide the same functionality out of the box. For new development, it may be preferable.

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