无法将类型'System.Web.Security.MembershipProvider'隐式转换为'WebMatrix.WebData.ExtendedMembershipProvider'

Question

I have the following insdie my asp.net mvc web application :-

[HttpPost]
        [AllowAnonymous]
        [ValidateAntiForgeryToken]
        public ActionResult Login(LoginModel model, string returnUrl)
        {


            ExtendedMembershipProvider domainProvider;

           domainProvider = Membership.Providers["TestDomain1ADMembershipProvider"];

but i am getting the folloiwng error :-

Cannot implicitly convert type 'System.Web.Security.MembershipProvider' to 'WebMatrix.WebData.ExtendedMembershipProvider'. An explicit conversion exists (are you missing a cast?)

Answer 1

The error message says it all: " An explicit conversion exists (are you missing a cast?)":

ExtendedMembershipProvider domainProvider;
domainProvider = (ExtendedMembershipProvider)Membership.Providers["TestDomain1ADMembershipProvider"];