c# - ASP.NET Beginner: Form roundtrip with model validation -

c# - ASP.NET Beginner: Form roundtrip with model validation -

i'm beggining larn asp.net , c# week. until now, i've been developing in php , symfony quite big transition me. i'm learning asp.net book asp.net mvc 4 in action.

i'm trying validate model can't find online help newbie me. model validates contact form name, email , message. simple, right?. not me.

this model...

public class contactmodel { [required(errormessage = "the name has provided, fictional one")] public string name { set; get; } [required(errormessage = "email address has provided, invalid one")] [datatype(datatype.emailaddress)] public string email { set; get; } [required(errormessage = "don't lazy. write message")] [datatype(datatype.multilinetext)] public string message { set; get; } }

i have controller called contactcontroller. has these actions...

public actionresult contact() { contactmodel contactmodel = new contactmodel(); homecoming view(contactmodel); } [httppost] public viewresult savemodel(contactmodel model) { homecoming view(model); }

also, here razor template shows model in ui.

<div class="ui__main main__contact"> <h1 class="ui__main--sectionheader">contact administrators of life</h1> @using (html.beginform("savemodel", "contact", formmethod.post, new { @class="form form__contact" })) { <div class="form__row"> @html.labelfor(model => model.name, new { @class="form__label" }) @html.textboxfor(model => model.name, new { @class="form__texttype form__textinput" }) @html.validationmessagefor(model => model.name) </div> <div class="form__row"> @html.labelfor(model => model.email, new { @class = "form__label" }) @html.textboxfor(model => model.email, new { @class = "form__texttype form__textinput" }) </div> <div class="form__row"> @html.labelfor(model => model.message, new { @class="form__label" }) @html.textarea("message", new { @class = "form__texttype form__textarea" }) </div> <div class="form__row submit__row"> <input id="submit__button" type="submit" value="send" /> </div> }

when user submits form, form have go savemodel action in contactcontroller action attribute of <form> blank action="" don't think it's going save model. also, validation messages not displayed. tried @html.validationmessagefor displays text when don't submit form.

i don't know problem here allow lone find it.

if has suggestions, tutorials, articles or creating form in asp.net mvc 4 , razor, please give me.

i've read article doesn't solve problem. found this stack question , this stack question said, i'm newbie , don't understand problems in questions.

edit:

here routes of app...

routes.maproute( name: null, url: "", defaults: new { controller = "home", action="index" } ); routes.maproute( name: null, url: "contact", defaults: new { controller = "contact", action = "contact" } );

your action stays empty because mvc framework can not resolve url given controller+action. have explicitly define url in routing table:

routes.maproute( name: null, url: "contact/send-form", defaults: new { controller = "contact", action = "savemodel" } );

or can alternatively generate generic fallback route

routes.maproute( name: null, url: "{controller}/{action}", defaults: new { controller = "home", action = "index" } );

which result in controller/actions available direct urls.

alternatively; can utilize attribute routing routes defined straight @ actions, less looking here & there. have to:

add routes.mapmvcattributeroutes(); in registerroutes.cs append attributes actions [route("contact")]

you can re-use same route if http method differs:

[httpget] [route("contact"} public actionresult contact() { contactmodel contactmodel = new contactmodel(); homecoming view(contactmodel); } [httppost] [route("contact")] public viewresult contact(contactmodel model) { if(modelstate.isvalid){ //persist contact form, redirect somewhere } homecoming view(model);//re-render form error messages }

c# asp.net-mvc