c# - How do I change the ASP.NET MVC default login page to login by username instead of email address? -

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i'll go on investigation , guys can figure out idea should next.

the relevant m, v , c login 

public class loginviewmodel {     [required]     [display(name = "email")]     [emailaddress]     public string email { get; set; }      [required]     [datatype(datatype.password)]     [display(name = "password")]     public string password { get; set; }      [display(name = "remember me?")]     public bool rememberme { get; set; } }

and

        @using (html.beginform("login", "account", new { returnurl = viewbag.returnurl }, formmethod.post, new { @class = "form-horizontal", role = "form" }))         {             @html.antiforgerytoken()             @html.validationsummary(true, "", new { @class = "text-danger" })             <div class="form-group">                 @html.labelfor(m => m.email, new { @class = "col-md-2 control-label" })                 <div class="col-md-10">                     @html.textboxfor(m => m.email, new { @class = "form-control" })                     @html.validationmessagefor(m => m.email, "", new { @class = "text-danger" })                 </div>             </div>             <div class="form-group">                 @html.labelfor(m => m.password, new { @class = "col-md-2 control-label" })                 <div class="col-md-10">                     @html.passwordfor(m => m.password, new { @class = "form-control" })                     @html.validationmessagefor(m => m.password, "", new { @class = "text-danger" })                 </div>             </div>             <div class="form-group" style="margin-bottom: 40px;">                 <div class="col-md-10">                     <div class="checkbox">                         @html.checkboxfor(m => m.rememberme)                         @html.labelfor(m => m.rememberme)                     </div>                 </div>             </div>             <div class="form-group">                 <div class="col-md-10">                     <input type="submit" value="log in" class="btn btn-default" style="padding-left: 40px; padding-right: 40px;" />                 </div>             </div>          }

and 

    [httppost]     [allowanonymous]     [validateantiforgerytoken]     public async task<actionresult> login(loginviewmodel model, string returnurl)     {         if (!modelstate.isvalid)         {             return view(model);         }          // doesn't count login failures towards account lockout         // enable password failures trigger account lockout, change shouldlockout: true         var result = await signinmanager.passwordsigninasync(model.email, model.password, model.rememberme, shouldlockout: false);         switch (result)         {             case signinstatus.success:                 return redirecttolocal(returnurl);             case signinstatus.lockedout:                 return view("lockout");             case signinstatus.requiresverification:                 return redirecttoaction("sendcode", new { returnurl = returnurl, rememberme = model.rememberme });             case signinstatus.failure:             default:                 modelstate.addmodelerror("", "invalid login attempt.");                 return view(model);         }     }

what i'm trying have login username rather email address. while can't find in mvc template source code pertaining username, looked in aspnetusers table template , see there indeed column called username. trick try , change above source code want without causing side effects elsewhere in mvc template.

i changed m 

public class loginviewmodel {      [required]     [display(name = "username")]     public string username { get; set; }      [required]     [datatype(datatype.password)]     [display(name = "password")]     public string password { get; set; }      [display(name = "remember me?")]     public bool rememberme { get; set; } }

and v 

        @using (html.beginform("login", "account", new { returnurl = viewbag.returnurl }, formmethod.post, new { @class = "form-horizontal", role = "form" }))         {             @html.antiforgerytoken()             @html.validationsummary(true, "", new { @class = "text-danger" })             <div class="form-group">                 @html.labelfor(m => m.username, new { @class = "col-md-2 control-label" })                 <div class="col-md-10">                     @html.textboxfor(m => m.username, new { @class = "form-control" })                     @html.validationmessagefor(m => m.username, "", new { @class = "text-danger" })                 </div>             </div>             <div class="form-group">                 @html.labelfor(m => m.password, new { @class = "col-md-2 control-label" })                 <div class="col-md-10">                     @html.passwordfor(m => m.password, new { @class = "form-control" })                     @html.validationmessagefor(m => m.password, "", new { @class = "text-danger" })                 </div>             </div>             <div class="form-group" style="margin-bottom: 40px;">                 <div class="col-md-10">                     <div class="checkbox">                         @html.checkboxfor(m => m.rememberme)                         @html.labelfor(m => m.rememberme)                     </div>                 </div>             </div>             <div class="form-group">                 <div class="col-md-10">                     <input type="submit" value="log in" class="btn btn-default" style="padding-left: 40px; padding-right: 40px;" />                 </div>             </div>          }

the changing of c stuff i'm stuck on. know changing

var result = await signinmanager.passwordsigninasync(model.email, model.password, model.rememberme, shouldlockout: false);

to 

var email = pingdatabaseandgetemailfromusername(model.username); var result = await signinmanager.passwordsigninasync(email, model.password, model.rememberme, shouldlockout: false);

but, there has better way, right?

also, it's possible screwed other stuff modifying loginviewmodel because other bits of code in mvc template might use , expect have email field.

so should doing here? want simplest change.

if have change passwordsigninasync, implementation? can't find it.

the default template implementation uses email address username, why it's sending model.email value passwordsigninasync function. assuming created user accounts separate email , username values, should simple changing sign in method to:

var result = await signinmanager.passwordsigninasync(model.username, model.password, model.rememberme, shouldlockout: false);

again, assumes user accounts created distinct username , email values.


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