First step：create a new MVC project

change the solution name and project name.
then choose project template:

Second step:add a controller and a view and a class.

Third step: edit the Index1.aspx in Views;

<div>
        <form method="post" action="/Calculator/GetAverage">
            請輸入總分數(shù):<input type="text" name="sumScore"/>
            請輸入總科目：<input type="text" name="sumObject">
            <input type="submit" value="計算">
        </form>
    </div>

fourth step: edit the models named GetAverage;

public class GetAverage
    {
        public int GetAvg(int sumScore, int sumObject) 
        {
            return sumObject == 0 ? 0 : sumScore / sumObject; 
        }
    }

fifth step: edit the controler ;

 public ActionResult GetAverage()
        {
            //接收數(shù)據(jù)
            int sumScore = Convert.ToInt32(Request.Params["sumScore"]);
            int sumObject = Convert.ToInt32(Request.Params["sumObject"]);
            //調(diào)用models里的方法
            GetAverage getAvg = new GetAverage();
            int result = getAvg.GetAvg(sumScore,sumObject);
            //保存需要傳遞的數(shù)據(jù)
            ViewData["avgScore"] = "平均成績?yōu)椋? + result;
            return View("Index1");

        }

last step: in Views, get data from controler;

<%=ViewData["avgScore"] %>

ok, game over.

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