asp.net mvc - Fluent Validation doesn't validate the entire form the first time -

so i'm using fluent validation on form. when click submit , have nothing entered, validation error date of birth. if enter dob, validation first name.

why happening? can't figure out wired wrong.

my form:

 @using (html.beginform())     {         @html.antiforgerytoken()         @html.hiddenfor(customer => customer.customerincomeinfo.customeremploymentinfomodel.employermodel.id)              <!-- basic customer info -->         <fieldset>             <legend>customer info</legend>             @html.validationsummary(false, "please correct errors , try again", new { @class = "text-danger" })             <div class="row">                 <div class="col-md-6">                     <dl class="dl-horizontal">                         <dt>@html.labelfor(model => model.firstname)</dt>                         <dd>@html.editorfor(model => model.firstname, new {@class = "form-control"})</dd>                      </dl>                 </div>                 <div class="col-md-6">                     <dl class="dl-horizontal">                         <dt>@html.labelfor(model => model.dateofbirth)</dt>                         <dd>@html.editorfor(model => model.dateofbirth, new {@class = "form-control"})</dd>                      </dl>                 </div>             </div>         </fieldset> } 

my fluent validation code:

public customervalidator()         {             rulefor(customer => customer.firstname)                 .length(3, 50)                 .notempty()                 .withmessage("please enter valid first name");              rulefor(customer => customer.dateofbirth).notempty().withmessage("please enter valid date of birth");           } 

my model:

public class customermodel     {         public customermodel()         {         }          public guid id { get; set; }         [displayname("first name")]         public string firstname { get; set; }         [displayname("d.o.b.")]         public datetime dateofbirth { get; set; } } 

registering validator autofac:

builder.registertype<customervalidator>()                 .keyed<ivalidator>(typeof(ivalidator<customermodel>))                 .as<ivalidator>(); 

i usingfluent validation in project in project working same way required.i have tried code same code working fine please refer below code:

/// test code  /// model class [validator(typeof (customermodelvalidator))] public class customermodel {     public customermodel() {}     public guid id {         get;         set;     }     [displayname("first name")]     public string firstname {         get;         set;     }     [displayname("d.o.b.")]     public datetime dateofbirth {         get;         set;     } } // validator class public class customermodelvalidator: abstractvalidator < customermodel > {     public customermodelvalidator() {         rulefor(customer = > customer.firstname)             .length(3, 50)             .notempty()             .withmessage("please enter valid first name");         rulefor(customer = > customer.dateofbirth).notempty().withmessage("please enter valid date of birth");     } } 

hope helps you.