ASP.NET web api - Set custom IIdentity or IPrincipal

Question

In our asp.net mvc/web api project, we want to customize the authorization using AuthorizeAttribute. We have noticed that there are two different AuthorizeAtt

Answer 1

Just extend your IPrincipal.

public static class IPrincipalExtension
{
   public static bool IsValid(this IPrincipal p)
   {
       // your custom validation
       return true;
   }
}

Now reference your namespace and use like this.

public class MyAuthorizeAttribute : System.Web.Http.AuthorizeAttribute
{
    protected override bool IsAuthorized(System.Web.Http.Controllers.HttpActionContext actionContext)
    {
        var valid = actionContext.RequestContext.Principal.IsValid(); // this will return boolean
        // your code here


    }
}