asp.net mvc - Multiple views modifying one object MVC -

i building service requires lengthy setup process. have broken 4 models , 4 corresponding views. setup, setup2, setup3, , setup4. each of these views gathers information user stored in user object. have been passing user along this:

    [httppost]     public actionresult setup(formcollection values)     {         user registeringuser = new user();          registeringuser.email = user.identity.name;         registeringuser.fname = values["fname"];         registeringuser.lname = values["lname"];         registeringuser.phone = values["phone"];          return redirecttoaction("/setup2", registeringuser);     } 

for reason, seems work fine first jump (from setup setup2) after i'm getting weird behavior, such user. getting set null when user passed view.

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in related, different issue, need last screen (setup4) recursive. screen adds course in user enrolled, , if don't check "this last class" button, needs clear form can enter course.

the entire controller looks this:

    [httppost]     public actionresult setup4(formcollection values, user registeringuser)     {         // values["allclassesadded"] returns "false" string if box unchecked, returns "true,false" if checked.         // solution: parse string "true"         if (utils.parsefortrue(values["allclassesadded"]))         {             // todo redirect "congratulations you're done" page.             database.createuserindb(registeringuser);             return redirect("/home");         }         else         {             // build course , add list in user             course c = new course(values);              if (request.isauthenticated)             {                 //registeringuser.currentcourses.add(c);                 registeringuser.addcourse(c);                 return redirecttoaction("/setup4", registeringuser); // <---- doesn't work right                 //return view();             }             else             {                 return redirect("/account/login");             }           }     } 

this first project mvc, if find i'm doing entire thing incorrectly, feel free not answer question asked , offer proper solution need. i'm moving existing (pure) c# project mvc , i'm stuck on how work within mvc's interesting structure. i'm grateful can give!

thanks!

you can store user related data in session without passing between requests

smth this

[httppost] public actionresult step1(step1model model) {    session["userregistration"] = new userregistration    {       firstname = model.fname,       ....    }    .... }   [httppost] public actionresult step2(step2model model) {    var userregistration = session["userregistration"] userregistration;    if (userregistration == null) { return redirrect("step1"); }    userregistration.somefield = model.somefield;    ...    session["userregistration"]  = userregistration;    .... }