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ASP.NET MVC 5 Client-Side Form Validation Using jQuery And Bootstrap With Model Class

Here's a simple client side validation in ASP.NET MVC 5. By default, the application's unobtrusive validation has been set to true in web.config file. For this demo, I did not include a saving process to database. I just added a simple view to indicate a success if the model passed to the controller is valid. See files and screenshots below:

Registration.cs (This should be created inside the Model folder)
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public class Registration
    {
        [Required(ErrorMessage = "You must provide your first name")]
        [Display(Name = "First Name")]
        public string FirstName { get; set; }
 
        [Required(ErrorMessage = "You must provide your last name")]
        [Display(Name = "Last Name")]
        public string LastName { get; set; }
 
        [Required(ErrorMessage = "You must provide your middle name")]
        [Display(Name = "Middle Name")]
        public string MiddleName { get; set; }
 
        [Required(ErrorMessage = "You must provide your email address")]
        [Display(Name = "E-Mail address")]
        [DataType(DataType.EmailAddress)]
        [EmailAddress]
        public string EmailAddress { get; set; }
 
        [Required]
        [StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
        [DataType(DataType.Password)]
        [Display(Name = "Password")]
        public string Password { get; set; }
 
        [Required]
        [DataType(DataType.Password)]
        [Display(Name = "Confirm password")]
        [System.ComponentModel.DataAnnotations.CompareAttribute("Password", ErrorMessage = "The password and confirmation password do not match.")]
        public string ConfirmPasword { get; set; }
    }

HomeController.cs
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public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }
 
        [HttpPost]
        public ActionResult Index(Registration registration)
        {
            if (ModelState.IsValid)
            {
                return RedirectToAction("RegistrationSuccess");
            }
 
            return View();           
        }
 
        public ActionResult RegistrationSuccess()
        {
            return View();
        }
    }

Index.cshtml
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@{
    ViewBag.Title = "Home Page";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
 
@model MVCFormValidation.Models.Registration
 
<div class="row">       
 
    @using (Html.BeginForm("Index", "Home", FormMethod.Post, new { id = "frmInput", @class = "form-horizontal" }))
    {           @Html.AntiForgeryToken()
                @Html.ValidationSummary(false)
                <div class="form-group">
                    @Html.LabelFor(m => m.FirstName, new { @class = "control-label col-md-2" })
                    <div class="col-md-10">
                        @Html.TextBoxFor(m => m.FirstName, new { @class = "form-control", @id = "fname", @name = "fname" })
                        @Html.ValidationMessageFor(m => m.FirstName, null)
                    </div>                   
                </div>
                <div class="form-group">
                    @Html.LabelFor(m => m.MiddleName, new { @class = "control-label col-md-2" })
                    <div class="col-md-10">
                        @Html.TextBoxFor(m => m.MiddleName, new { @class = "form-control", @id = "mname", @name = "mname" })       
                        @Html.ValidationMessageFor(m => m.MiddleName)                 
                    </div>
                </div>
                <div class="form-group">
                    <label for="lname" class="control-label col-md-2">Last Name:</label>
                    <div class="col-md-10">
                        @Html.TextBoxFor(m => m.LastName, new { @class = "form-control", @id = "lname", @name = "lname" }) 
                        @Html.ValidationMessageFor(m => m.LastName)   
                    </div>
                </div>
                <div class="form-group">
                    <label class="control-label col-md-2" for="email">Email:</label>
                    <div class="col-md-10" >
                        @Html.TextBoxFor(m => m.EmailAddress, new { @class = "form-control", @id = "email", @name = "email" })
                        @Html.ValidationMessageFor(m => m.EmailAddress) 
                    </div>
                </div>
                <div class="form-group">
                    <label for="Password" class="control-label col-md-2">Password</label>
                    <div class="col-md-10">
                        @Html.PasswordFor(m => m.Password, new { @class = "form-control", @id = "password", @name = "password" })
                        @Html.ValidationMessageFor(m => m.Password)   
                    </div>
                </div>
                <div class="form-group">
                    <label for="ConfirmPassword" class="control-label col-md-2">Confirm Password</label>
                    <div class="col-md-10">
                        @Html.PasswordFor(m => m.ConfirmPasword, new { @class = "form-control", @id = "confirmpassword", @name = "confirmpassword" })
                        @Html.ValidationMessageFor(m => m.ConfirmPasword)    
                    </div>
                </div>
                <div class="form-group">
                    <div class="col-sm-offset-2 col-md-10">
                        <button type="submit" class="btn btn-primary">Register</button>
                        <button type="button" class="btn">Cancel</button>
                    </div>
                </div>
    }
</div>

CustomBootstrapValidation.js (This should be created inside the Scripts folder
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//bootstrap styling 3.x 
$(function () {
    // set formatting for validation summary
    $('.validation-summary-errors').each(function () {
        $(this).addClass('alert');
        $(this).addClass('alert-danger');
    });
 
    $("#frmInput").submit(function () {
        if ($(this).valid()) {
            $(this).find('div.form-group').each(function () {
                if ($(this).find('span.field-validation-error').length == 0) {
                    $(this).removeClass('has-error');
                    $(this).addClass('has-success');
                }
            });
        }
        else {
            $(this).find('div.form-group').each(function () {
                if ($(this).find('span.field-validation-error').length > 0) {
                    $(this).removeClass('has-success');
                    $(this).addClass('has-error');
                }
            });
            $('.validation-summary-errors').each(function () {
                if ($(this).hasClass('alert-danger') == false) {
                    $(this).addClass('alert');
                    $(this).addClass('alert-danger');
                }
            });
        }
    });
});
 
/* set defaults */
var page = function () {
    //Update the validator
    $.validator.setDefaults({
        highlight: function (element) {
            $(element).closest(".form-group").addClass("has-error");
            $(element).closest(".form-group").removeClass("has-success");
        },
        unhighlight: function (element) {
            $(element).closest(".form-group").removeClass("has-error");
            $(element).closest(".form-group").addClass("has-success");
        }
    });
}();

Screenshots:
ASP.NET MVC 5 Client-Side Form Validation Using jQuery And Bootstrap With Model Class
ASP.NET MVC 5 Client-Side Form Validation Using jQuery And Bootstrap With Model Class
ASP.NET MVC 5 Client-Side Form Validation Using jQuery And Bootstrap With Model Class
Note: Make sure to bundle the external javascript file in BundleConfig.cs and Render it in Layout.cshtml.

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