c# - How to populate user(Identity) roles for a Web application when roles are stored in a SQL Server database -


i have c# based asp.net application form based authentication , needs authorization.

here simplified version of user table (sql server)

uid   uname passwordhash userroles ---------------------------------------------- 1         gergergeger   proivder;data entry 2      b    wergtwetwtw   helpdsk; usernamager ... ...

i'm quite familiar authentication part. authorization not sure best way:

i know once user authorized, can use identity object his/her info.

the question choice read logged in user's roles on every page other call db table every time them?

i not sure sql server question. asp.net question.

asp.net forms authentication allows application define "principal" (among other things) contains array of strings known "roles." can populate roles db 1 time (when user signs on) serialize principal forms authentication ticket, becomes encrypted cookie on browser. asp.net decodes cookie each http request , provides asp.net c# code via httpcontext.user. can retrieve roles context , never needs talk db again.

storing roles this:

string roles = "admin,member"; formsauthenticationticket authticket = new formsauthenticationticket(     1,     userid,  //user id     datetime.now,     datetime.now.addminutes(20),  // expiry     false,  //do not remember     roles,      "/"); httpcookie cookie = new httpcookie(formsauthentication.formscookiename,                                    formsauthentication.encrypt(authticket)); response.cookies.add(cookie);

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