Ajax in ASP.NET MVC

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21 Jun, 2018 Categories: ASP.NET MVC


Create ASP.NET MVC Project

On the Visual Studio, create new ASP.NET MVC Web Application project

Select Empty Template and Core Reference is MVC

Add JQuery Library

Create new folder named Content. In this folder, create new folder named Js. Copy JQuery file need use to this folder.




Entity Class

In Models folder, create new entities class as below:

Product

Create new class named Product.cs as below:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;

namespace LearnASPNETMVCWithRealApps.Models
{
    public class Product
    {
        public string Id { get; set; }
        public string Name { get; set; }
        public double Price { get; set; }
    }
}

Create Controller

In Controllers folder, create new controller named DemoController.cs as below:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using LearnASPNETMVCWithRealApps.Models;

namespace LearnASPNETMVCWithRealApps.Controllers
{
    public class DemoController : Controller
    {

        public ActionResult Index()
        {
            return View();
        }

        public ActionResult Demo1()
        {
            return Content("Demo 1", "text/plain");
        }

        public ActionResult Demo2(string fullName)
        {
            return Content("Hi " + fullName, "text/plain");
        }

        public ActionResult Demo3()
        {
            Product product = new Product()
            {
                Id = "p01",
                Name = "name 1",
                Price = 4.5
            };
            return Json(product, JsonRequestBehavior.AllowGet);
        }

        public ActionResult Demo4()
        {
            List<Product> products = new List<Product>() {
                new Product() {
                    Id = "p01",
                    Name = "name 1",
                    Price = 4.5
                },
                new Product() {
                    Id = "p02",
                    Name = "name 2",
                    Price = 7
                },
                new Product() {
                    Id = "p03",
                    Name = "name 3",
                    Price = 8
                }
            };
            return Json(products, JsonRequestBehavior.AllowGet);
        }

    }
}




Create View

In Views/Demo folder, create new razor view named Index.cshtml, this file use JQuery Ajax as below:

@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
    <script src="~/Content/Js/jquery-1.7.1.js"></script>
    <script type="text/javascript">

        $(document).ready(function () {

            $('#buttonDemo1').click(function () {
                $.ajax({
                    type: 'GET',
                    url: '@Url.Action("Demo1", "Demo")',
                    success: function (data) {
                        $('#result1').html(data);
                    }
                });
            });

            $('#buttonDemo2').click(function () {
                var fullName = $('#fullName').val();
                $.ajax({
                    type: 'GET',
                    data: { fullName: fullName },
                    url: '@Url.Action("Demo2", "Demo")',
                    success: function (data) {
                        $('#result2').html(data);
                    }
                });
            });

            $('#buttonDemo3').click(function () {
                $.ajax({
                    type: 'POST',
                    dataType: "json",
                    contentType: "application/json",
                    url: '@Url.Action("Demo3", "Demo")',
                    success: function (product) {
                        var result = 'Id: ' + product.Id + '<br>Name: ' + product.Name + '<br>Price: ' + product.Price;
                        $('#result3').html(result);
                    }
                });
            });

            $('#buttonDemo4').click(function () {
                $.ajax({
                    type: 'POST',
                    dataType: "json",
                    contentType: "application/json",
                    url: '@Url.Action("Demo4", "Demo")',
                    success: function (products) {
                        var result = '';
                        for (var i = 0; i < products.length; i++) {
                            result += 'Id: ' + products[i].Id + '<br>Name: ' + products[i].Name + '<br>Price: ' + products[i].Price + '<br>===================<br>';
                        }
                        $('#result4').html(result);
                    }
                });
            });



        });

    </script>
</head>
<body>

    <fieldset>
        <legend>Demo 1</legend>
        <input type="button" value="Demo 1" id="buttonDemo1" />
        <br />
        <span id="result1"></span>
    </fieldset>

    <fieldset>
        <legend>Demo 2</legend>
        Full Name <input type="text" id="fullName" />
        <br />
        <input type="button" value="Demo 2" id="buttonDemo2" />
        <br />
        <span id="result2"></span>
    </fieldset>

    <fieldset>
        <legend>Demo 3</legend>
        <input type="button" value="Demo 3" id="buttonDemo3" />
        <br />
        <span id="result3"></span>
    </fieldset>

    <fieldset>
        <legend>Demo 4</legend>
        <input type="button" value="Demo 4" id="buttonDemo4" />
        <br />
        <div id="result4"></div>
    </fieldset>

</body>
</html>

Structure of ASP.NET MVC Project




Run Application

Access Index action in Demo controller with following url: http://localhost:49328/Demo/Index

Output

Click Demo 1 button to call Demo1 action in Demo controller with ajax

Output

Click Demo 2 button to call Demo2 action in Demo controller with ajax

Output

Click Demo 3 button to call Demo3 action in Demo controller with ajax

Output

Click Demo 4 button to call Demo4 action in Demo controller with ajax

Output

References

I recommend you refer to the books below to learn more about the knowledge in this article:


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