1、在Models下写处理程序的类
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 ?6 namespace MvcDemo.Models 7 { 8 ????public class MyCalculator 9 ????{10 ????????/// <summary>11 ????????/// 计算平均成绩12 ????????/// </summary>13 ????????/// <param name="sumScore">总分</param>14 ????????/// <param name="sumSubject">科目总数</param>15 ????????/// <returns></returns>16 ????????public int GetAvg(int sumScore, int sumSubject)17 ????????{18 ????????????return sumScore / sumSubject;19 ????????20 ????????}21 22 ????}23 }2、在Controllers下加入控制器
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using System.Web.Mvc; 6 ?7 ?8 namespace MvcDemo.Controllers 9 {10 ????public class CalculatorController : Controller11 ????{12 ????????//13 ????????// GET: /Calculator/14 15 ????????public ActionResult Index()16 ????????{17 ????????????return View("MyCal");//如果用View（），返回与控制器动作方法同名视图，即Index.aspx,而View/Calculator下没有Index.aspx视图，肯定会出错18 ????????}19 ????????public ActionResult GetAvgScore()20 ????????{ 21 ????????//[1]接收提交的数据22 ????????????int sumScore = Convert.ToInt32(Request.Params["sumScore"]);23 ????????????int sumSubject = Convert.ToInt32(Request.Params["sumSubject"]);24 ????????//【2】调用模型处理数据25 ????????????int result=new MvcDemo.Models.MyCalculator().GetAvg(sumScore,sumSubject);26 ???????//【3】返回视图（返回视图前，如果需要数据返回，必须先保存数据）27 ????????????ViewData["avgScore"]="您的平均成绩是：" +result.ToString();28 ????????????return View("MyCal"); ?//能不能用View()呢？不行，View()返回的是与，即GetAvgScore视图，必须要显式的写上（无后缀名）29 30 ????????}31 32 ????}33 }3、在Views加文件夹（与控制器同名），再加视图名称
1 <%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> 2 ?3 <!DOCTYPE html> 4 ?5 <html> 6 <head runat="server"> 7 ????<meta name="viewport" content="width=device-width" /> 8 ????<title>MyCal</title> 9 </head>10 <body>11 ????<div>12 13 ?????????<form method="post" ?action="/Calculator/GetAvgScore" > 14 ?????????????<%--根据路由规则来填写action,即url: "{controller}/{action}/{id}",--%>15 ?????????????计算我的平均成绩：<br />16 ?????????????科目总分：<input ?type="text" name="sumScore"/><br />17 ?????????????科目总数：<input ?type="text" name="sumSubject"/><br />18 ?????????????<input type="submit" value="开始计算"/>19 20 ?????????</form> ???21 ????????<br />22 ????????<%--ViewData能够在控制器和视图之间传递，通过键来获取值--%>23 ????????<%=ViewData["avgScore"] %>24 ????</div>25 </body>26 </html>MVC的程序入口：App_Start/RouteConfig下的Default路由来确定。
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using System.Web.Mvc; 6 using System.Web.Routing; 7 ?8 namespace MvcDemo 9 {10 ????public class RouteConfig11 ????{12 ????????public static void RegisterRoutes(RouteCollection routes)13 ????????{14 ????????????routes.IgnoreRoute("{resource}.axd/{*pathInfo}");15 16 ????????????routes.MapRoute(17 ????????????????name: "Default",18 ????????????????url: "{controller}/{action}/{id}",19 ????????????????//默认是Home/Index，程序入口20 ????????????????defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }21 ????????????);22 ????????}23 ????}24 }MVC操作
原文地址：https://www.cnblogs.com/atlj/p/8185522.html