C# 关于MVC框架的简单实例（计算器）

一、需求分析

实现效果

二、实现步骤

步骤一：新建项目--->Web---->空模板

步骤二：添加控制器

步骤三：根据控制器名称添加视图

步骤四：添加Models模型编写具体的方法

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

namespace MVCDemo.Models
{
    public class Calculator
    {
        public int getAVG(int sumScore,int sumSubject)
        {
            return sumScore / sumSubject;
        }
    }
}

步骤五：编写视图，具体展示的内容

@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>CalculatorView</title>
</head>
<body>
    <form method="post" action="/Calculator/Calculate">
        计算平均成绩<br/>
        总成绩：<input type="text" name="sumScore" /> <br/>
        总科目：<input type="text" name="sumSubject" /><br/>
        <input type="submit" value="开始计算"/><br/>
        @ViewData["avgScore"]
    </form>

</body>
</html>

步骤六：编写控制器活动方法

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

namespace MVCDemo.Controllers
{
    public class CalculatorController : Controller
    {
        // GET: Calculator
        public ActionResult Index()
        {
            return View("CalculatorView");
        }

        public ActionResult Calculate()
        {
            //[1]获取数据
            int sumScore = Convert.ToInt32(Request.Params["sumScore"]);
            int sumSubject = Convert.ToInt32(Request.Params["sumSubject"]);
            //[2]处理数据
            Calculator objCal = new Calculator();
            int avgScore = objCal.getAVG(sumScore, sumSubject);
            //[3]返回数据
            ViewData["avgScore"] = "平均成绩为：" + avgScore;
            return View("CalculatorView");
        }
    }
}

步骤七：修改路由

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

namespace MVCDemo
{
    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 = "Calculator", action = "Index", id = UrlParameter.Optional }
            );
        }
    }
}