C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.ComponentModel.DataAnnotations;

namespace HelloWorldMvcApp
{
	public class User
	{
    	public String UserName { get; set; }
	    public String Password { get; set; }
	}
}

Model

​x
 
using System;
using System.ComponentModel.DataAnnotations;
​
namespace HelloWorldMvcApp
{
    public class User
    {
        public String UserName { get; set; }
        public String Password { get; set; }
    }
}

@model HelloWorldMvcApp.User
@{
	Layout = null;
}

<!DOCTYPE html>
<!-- template from http://getbootstrap.com/getting-started -->

<html lang="en">
	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>Bootstrap 101 Template</title>

		<!-- CSS Includes -->
		<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
		
		<style type="text/css">

			.field-validation-error {
				color: #ff0000;
			}

		</style>
	</head>
	
	<body>
		<div class="container">
			<div class="col-md-6 col-md-offset-3">
				@using (@Html.BeginForm("Login", "Login", FormMethod.Post, new {@id="loginForm"}))
{   
    <div class="form-group">
      <input type="text" class="form-control" placeholder="Username" id="UserName" name="UserName">
    </div>
    <div class="form-group">
      <input type="password" class="form-control" placeholder="Password" id="Password" name="Password">
    </div>
    <div class="form-group">
      <button class="btn btn-warning btn-block" type="submit" id="signin">login</button>
    </div>  
}
			</div>
		</div>

		<!-- JS includes -->
				<script
				src="https://code.jquery.com/jquery-3.1.1.min.js"
				integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8="
				crossorigin="anonymous"></script>
				<script 
				src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
				<script 
				src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.15.1/jquery.validate.min.js"></script>
				<script
				src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validation-unobtrusive/3.2.6/jquery.validate.unobtrusive.min.js"></script>
		
		<script type="text/javascript">
		 $(document).ready(function()
    {
        $("#signin").click(function ()
        {
                $("#loginForm").validate({
                    rules: {
                        UserName: {
                            required: true,
                            minlength: 2,
                            maxlength: 15
                        },
                        Password: {
                            required: true,
                            minlength: 5,
                            maxlength: 18
                        }
                    },
                    messages: {
                        UserName: {
                            required: "username req",
                            minlength: "user is small",
                            maxlength: "user is long"
                        },
                        Password: {
                            required: "pass req",
                            minlength: "pass is small",
                            maxlength: "pass is long"
                        }
                    },
                    submitHandler: function (form) {
                        var form = $('#loginForm');
                        $.ajax({
                            cache: false,
                            async: true,
                            type: "POST", 
                            url: form.attr('Login'), // the action it 
                            data: form.serialize(),
                            success: function (data) {
                                if (data == false) {
                                    alert("Username doesn't exist");
                                }
                            }
                        });
                    }

                });

            });
    });
		</script>
	</body>
</html>

View

 
@model HelloWorldMvcApp.User
@{
    Layout = null;
}
​
<!DOCTYPE html>
<!-- template from http://getbootstrap.com/getting-started -->
​
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>Bootstrap 101 Template</title>
​
        <!-- CSS Includes -->
        <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
        
        <style type="text/css">
​
            .field-validation-error {
                color: #ff0000;
            }
​
        </style>
    </head>
    
    <body>
        <div class="container">
            <div class="col-md-6 col-md-offset-3">
                @using (@Html.BeginForm("Login", "Login", FormMethod.Post, new {@id="loginForm"}))
{   
    <div class="form-group">
      <input type="text" class="form-control" placeholder="Username" id="UserName" name="UserName">
    </div>
    <div class="form-group">
      <input type="password" class="form-control" placeholder="Password" id="Password" name="Password">
    </div>
    <div class="form-group">
      <button class="btn btn-warning btn-block" type="submit" id="signin">login</button>
    </div>  
}
            </div>
        </div>
​
        <!-- JS includes -->
                <script
                src="https://code.jquery.com/jquery-3.1.1.min.js"
                integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8="
                crossorigin="anonymous"></script>
                <script 
                src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
                <script 
                src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.15.1/jquery.validate.min.js"></script>
                <script
                src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validation-unobtrusive/3.2.6/jquery.validate.unobtrusive.min.js"></script>
        
        <script type="text/javascript">
         $(document).ready(function()
    {
        $("#signin").click(function ()
        {
                $("#loginForm").validate({
                    rules: {
                        UserName: {
                            required: true,
                            minlength: 2,
                            maxlength: 15
                        },
                        Password: {
                            required: true,
                            minlength: 5,
                            maxlength: 18
                        }
                    },
                    messages: {
                        UserName: {
                            required: "username req",
                            minlength: "user is small",
                            maxlength: "user is long"
                        },
                        Password: {
                            required: "pass req",
                            minlength: "pass is small",
                            maxlength: "pass is long"
                        }
                    },
                    submitHandler: function (form) {
                        var form = $('#loginForm');
                        $.ajax({
                            cache: false,
                            async: true,
                            type: "POST", 
                            url: form.attr('Login'), // the action it 
                            data: form.serialize(),
                            success: function (data) {
                                if (data == false) {
                                    alert("Username doesn't exist");
                                }
                            }
                        });
                    }
​
                });
​
            });
    });
        </script>
    </body>
</html>
​

using System;
using System.Web.Mvc;
using System.Collections.Generic;

namespace HelloWorldMvcApp
{
	public class LoginController : Controller
    {
		public ActionResult Index() 
		{
			return View();
		}
		
		[HttpPost]
		public bool Login(User x)
		{
			return false;
		}
		
		public ActionResult LoginTst()
		{
			return View();
		}
	}
}

Controller

 
using System;
using System.Web.Mvc;
using System.Collections.Generic;
​
namespace HelloWorldMvcApp
{
    public class LoginController : Controller
    {
        public ActionResult Index() 
        {
            return View();
        }
        
        [HttpPost]
        public bool Login(User x)
        {
            return false;
        }
        
        public ActionResult LoginTst()
        {
            return View();
        }
    }
}

View in Full Screen

False

Last Run:	5:14:38 pm
Compile:	0.171s
Execute:	0.016s
Memory:	0b
CPU:	0.016s

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