c# - How do I edit a FormCollection value, and then use TryUpdateModel with the edited collection? -

mvc5 storing passwords in plaintext. don't want use default hashing algorithm, i'm required use e.encrypt() instead. i'm creating registration function, , need know how can edit values formcollection before using tryupdatemodel.

here's code:

    [httppost]     public actionresult register([bind(include = "user,pass,email")] formcollection form)     {         var user = new users();         string hash = e.encrypt(form["pass"]); // gets set.         if (tryupdatemodel(user, form))         {             context.entry(user).state = entitystate.added;             context.savechanges();             return redirecttoaction("login", "account");         }         return view();     } 

i've searched high , low, , i've found irrelevant needs.

i've tried this:

form["password"] = e.encrypt(form["password"]) 

...and compiles, when debugging, value never gets set. e.encrypt() work function, it's not that.

what doing wrong?

i figured out after trial , error:

    [httppost]     // remove formcollection , replace usermodel.     public actionresult register([bind(include= "username,password,emailaddress")] usermodel user)     {         if (tryupdatemodel(user))         {             // set password in tryupdate success.             user.password = e.encrypt(user.password);; // set correctly              context.entry(user).state = entitystate.added;             context.savechanges();             return redirecttoaction("login", "account");         }         return view();     } 

however, issue popped up, datavalidationerror. issue usermodel.cs class:

    [regularexpression(regexpassword, errormessage = errorpassword)] 

i had regular expression didn't match hash, when tried update, unable validate. that's problem thread, removed now.