Formsauthentication authentication with role information

Steps:

1. manually set formsauthenticationticket upon logon. The Code is as follows:

// You can manually add formsauthenticationticket
Formsauthenticationticket ticket = new formsauthenticationticket (1, "username", datetime. Now, datetime. Now. addminutes (20), false, "admin ");
// Encryption
String hashticket = formsauthentication. Encrypt (ticket );
// Generate cookie
Httpcookie usercookie = new httpcookie (formsauthentication. formscookiename, hashticket );
// The cookie of the authentication ticket is output to the client
Response. Cookies. Add (usercookie );

2. Add the following code to global:

　　　　　protected void Application_AuthenticateRequest(Object sender, EventArgs e)
        {
//Construst the GeneralPrincipal and FormsIdentity objects
            HttpCookie authCookie = Context.Request.Cookies[FormsAuthentication.FormsCookieName];

if (null == authCookie)
            {
//no authentication cokie present
                return;
            }

            FormsAuthenticationTicket authTicket =  FormsAuthentication.Decrypt(authCookie.Value);

if (null == authTicket)
            {
//could not decrypt cookie
                return;
            }

//get the role
            string[] role = authTicket.UserData.Split(new char[] { ',' });
            FormsIdentity id = new FormsIdentity(authTicket);

            Context.User = new GenericPrincipal(id, role);
        }

In this way, we can use [authorize (roles = "admin")] in the program for verification.