Create Addition, Subtraction, Multiplication, Division Application Using ASP.NET MVC 4.0 With Multiple Submit Buttons

Create an MVC application named "Operation". I named mine as "Addition".

By default, Visual Studio created some folders for you, like Controllers, Models, Views etc.

Now, go to "Models" folder and create a class file. Here, we define some entities for accessing the values through it and showing the output.

AdditionViewModel.cs 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Addition.Models {
    public class AdditionViewModel {
        //public int A { get; set; }
        //public int B { get; set; }
        //public int Result { get; set; }
        public double A {
            get;
            set;
        }
        public double B {
            get;
            set;
        }
        public double Result {
            get;
            set;
        }
    }
}

Then, go to "Controllers" folder and create a Controller class file as mentioned in the below snap.

HomeController.cs 

using Addition.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace Addition.Controllers {
    public class HomeController: Controller {
        //
        // GET: /Home/
        [HttpGet]
        public ActionResult Index() {
                return View();
            }
            [HttpPost]
        public ActionResult Index(AdditionViewModel model, string command) {
            if (command == "add") {
                model.Result = model.A + model.B;
            }
            if (command == "sub") {
                model.Result = model.A - model.B;
            }
            if (command == "mul") {
                model.Result = model.A * model.B;
            }
            if (command == "div") {
                model.Result = model.A / model.B;
            }
            return View(model);
        }
    }
}

Go to "Views" folder and create a folder called "Home" inside which create a cshtml file named  Index.cshtml.

Index.cshtml 

@model Addition.Models.AdditionViewModel
@ {
    Layout = null;
}
@using(Html.BeginForm()) { < fieldset > < legend style = "color:blue" > Operation Of Two Numbers < /legend>
    @Html.EditorFor(x => x.A) < br / > < br / > @Html.EditorFor(x => x.B) < br / > < br / > < input type = "submit"
    value = "add"
    name = "command" / > < input type = "submit"
    value = "sub"
    name = "command" / > < input type = "submit"
    value = "mul"
    name = "command" / > < input type = "submit"
    value = "div"
    name = "command" / > < br / > < br / > < h2 style = "color:red" > @Html.Label("Result is :")
    @Html.DisplayFor(x => x.Result) < /h2> < /fieldset>
}

Then, go to "App_Start" folder and open the RouteConfig.cs file to add some code to set the start page when the application will load the first time, like ASP.NET.

RouteConfig.cs 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
namespace Addition {
    public class RouteConfig {
        public static void RegisterRoutes(RouteCollection routes) {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
            routes.MapRoute(name: "Default", url: "{controller}/{action}/{id}", defaults: new {
                controller = "Home", action = "Index", id = UrlParameter.Optional
            });
        }
    }
}

The output of this application will be like the following.

See the URL - http://localhost:56637/Home/Index

Here, "Home" is the Controller name and "Index" is the controller action method name.

Output

Happy coding….

Have a Nice Day and Good Luck.