asp.net mvc - Validate required model only -

i'm using 2 models, login & signup model in view.

public class login {     [required(errormessage ="user id required.")]     public string userid { get; set; }     [required(errormessage ="password required")]     public string password { get; set; }  }  public class signup {     [required (errormessage ="user id required")]     public string userid { get; set; }      [required (errormessage ="name required")]     public string name { get; set; }      [required (errormessage ="mail id required")]     public string mailid { get; set; }      [required(errormessage ="password required")]     public string password { get; set; }      [required(errormessage ="confirm password required")]     [compare (nameof(password), errormessage ="password not match")]     public string confirmpassword { get; set; }          } 

when click login button, validates both models. how validate model separately?

used following codes in controller

   public actionresult index() {     return view(); } [httppost] public actionresult index(string command, login login) {     if (command == "signup")     {         return redirecttoaction("contact");     }     else     {         if (modelstate.isvalidfield("userid") && modelstate.isvalidfield("password"))         {             return redirecttoaction("about");         }                    }     return view(); } 

index.cshtml view code:

    @using (html.beginform())  {    @html.antiforgerytoken()     @html.validationsummary(true, "", new { @class = "text-danger" }) <div class="holderform">     <div class="col-md-6">         <div class="form-horizontal">             <h4>login</h4>             <hr />              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.login.userid, new { htmlattributes = new { @class = "loginentry", @placeholder = "user id" } })<br>                     @html.validationmessagefor(o => o.login.userid,"", new {@class= "loginvalidation" } )                 </div>             </div>             <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.login.password, new { htmlattributes = new { @class = "loginentry", @placeholder = "password" } })<br>                     @html.validationmessagefor(o => o.login.password,"", new { @class = "loginvalidation" })                     @viewbag.posted                 </div>             </div>             <div class="form-group">                 <div class="col-md-offset-2 col-md-10">                    @viewbag.posted                 </div>             </div>             <div class="form-group">                 <div class="col-md-offset-2 col-md-10">                     <input type="submit"                              value="login"                            id="btn_login"                            name="command"                             class="btn btn-default" />                 </div>             </div>         </div>     </div>     <div class="col-md-6">         <div class="form-horizontal">             <h4>signup</h4>             <hr />             @html.validationsummary(true, "", new { @class = "text-danger"     })             <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.userid, new { htmlattributes = new { @class = "loginentry", @placeholder = "user id" } })<br>                     @html.validationmessagefor(o => o.signup.userid,"", new {  @class = "loginvalidation" } )                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.name, new { htmlattributes = new { @class = "loginentry", @placeholder = "name" } })<br>                     @html.validationmessagefor(o => o.signup.name, "", new { @class = "loginvalidation" })                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.mailid, new { htmlattributes = new { @class = "loginentry", @placeholder = "mail id" } })<br>                     @html.validationmessagefor(o => o.signup.mailid, "", new     { @class = "loginvalidation" })                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.password, new {   htmlattributes = new { @class = "loginentry", @placeholder = "password", @type = "password" } })<br>                     @html.validationmessagefor(o => o.signup.password, "", new { @class = "loginvalidation" })                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.confirmpassword, new {     htmlattributes = new { @class = "loginentry", @placeholder = "confirm password",     @type = "password" } })<br>                     @html.validationmessagefor(o =>    o.signup.confirmpassword, "", new { @class = "loginvalidation" })                  </div>             </div>              <div class="form-group">                 <div class="col-md-offset-2 col-md-10">                         <input type= "submit" value="signup"                                                                 id="btn_login"                                name="command"                                 class="btn btn-default" />                     </div>                 </div>             </div>         </div>           </div>   } 

above code place on view using 2 different model.

please , suggest me learn asp.net (beginner level)?

you add login , signup in 1 form

@using (html.beginform()){     ... } 

try this

<div class="holderform">  @using (html.beginform())  {     @html.antiforgerytoken()     @html.validationsummary(true, "", new { @class = "text-danger" })     <div class="col-md-6">         <div class="form-horizontal">             <h4>login</h4>             <hr />              <div class="form-group">                 <div class="col-md-10">                 @html.editorfor(o => o.login.userid, new { htmlattributes = new { @class = "loginentry", @placeholder = "user id" } })<br>                 @html.validationmessagefor(o => o.login.userid,"", new {@class= "loginvalidation" } )             </div>         </div>         <div class="form-group">             <div class="col-md-10">                 @html.editorfor(o => o.login.password, new { htmlattributes = new { @class = "loginentry", @placeholder = "password" } })<br>                 @html.validationmessagefor(o => o.login.password,"", new { @class = "loginvalidation" })                 @viewbag.posted             </div>         </div>         <div class="form-group">             <div class="col-md-offset-2 col-md-10">                @viewbag.posted             </div>         </div>         <div class="form-group">             <div class="col-md-offset-2 col-md-10">                 <input type="submit"                          value="login"                        id="btn_login"                        name="command"                         class="btn btn-default" />             </div>         </div>     </div> </div> } @using (html.beginform()) {     @html.antiforgerytoken()     @html.validationsummary(true, "", new { @class = "text-danger" })     <div class="col-md-6">         <div class="form-horizontal">             <h4>signup</h4>             <hr />             @html.validationsummary(true, "", new { @class = "text-danger"     })             <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.userid, new { htmlattributes = new { @class = "loginentry", @placeholder = "user id" } })<br>                     @html.validationmessagefor(o => o.signup.userid,"", new {  @class = "loginvalidation" } )                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.name, new { htmlattributes = new { @class = "loginentry", @placeholder = "name" } })<br>                     @html.validationmessagefor(o => o.signup.name, "", new { @class = "loginvalidation" })                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.mailid, new { htmlattributes = new { @class = "loginentry", @placeholder = "mail id" } })<br>                     @html.validationmessagefor(o => o.signup.mailid, "", new     { @class = "loginvalidation" })                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.password, new {   htmlattributes = new { @class = "loginentry", @placeholder = "password", @type = "password" } })<br>                     @html.validationmessagefor(o => o.signup.password, "", new { @class = "loginvalidation" })                 </div>             </div>              <div class="form-group">                 <div class="col-md-10">                     @html.editorfor(o => o.signup.confirmpassword, new {     htmlattributes = new { @class = "loginentry", @placeholder = "confirm password",     @type = "password" } })<br>                     @html.validationmessagefor(o =>    o.signup.confirmpassword, "", new { @class = "loginvalidation" })                  </div>             </div>              <div class="form-group">                 <div class="col-md-offset-2 col-md-10">                     <input type= "submit" value="signup"                                                             id="btn_login"                            name="command"                             class="btn btn-default" />                 </div>             </div>         </div>     </div>       </div>   }