Web MVC开发程序代码的简写方法，强类型数据和Html helper使用方法。车老师代码

控制器代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcApplication1.Models;

using System.IO;
namespace MvcApplication1.Controllers
{
    public class HomeController : Controller
    {

        public ActionResult Index()
        {
            List<Info> list = new InfoBF().Select();
            //ViewBag.Data = new InfoBF().Select();
            return View(list);  //强类型数据写法
        }
        public ActionResult Add()
        {
            Info data = new Info();
            List<Nation> list = new NationBF().Select();
            ViewBag.Data= new SelectList(list,"Code","Name");
            return View(data);   //强类型数据写法
        }
        public ActionResult Insert(Info data)   //强类型数据写法
        {
            new InfoBF().Insert(data);
            return RedirectToAction("Index");
        }
        //public ActionResult Insert(string code, string name, bool sex, string nation, DateTime birthday)
        //{
        //    new InfoBF().Insert(code, name, sex, nation, birthday);
        //    return RedirectToAction("Index");
        //}
        //显示出修改的界面来
        public ActionResult Edit(string id)
        {
            Info data = new InfoBF().Select(id);
            List<Nation> list = new NationBF().Select();
            SelectList options = new SelectList(list, "Code", "Name", data.Nation);
            ViewBag.Nations = options;
            return View(data);  //强类型数据写法
        }
        //更新回数据库
        public ActionResult Update(string code,string name,bool sex,string nation,DateTime birthday)
        {
            new InfoBF().Update(code, name, sex, nation, birthday);
            return RedirectToAction("Index");
        }
        public ActionResult Delete(string id)
        {
            new InfoBF().Delete(id);
            return RedirectToAction("Index");
        }

        //using 的用法
        public void Test()
        {
            //using (SqlConnection conn = new SqlConnection("..."))
            //{
            //    using (SqlCommand cmd = conn.CreateCommand)
            //    {
            //        cmd.CommandText = "";
            //        using (SqlDataReader dr = cmd.ExecuteReader())
            //        {

            //        }
            //    }
            //}

            //using (StreamWriter writer = new StreamWriter())
            //{
            //    writer.Write("adsf");

            //}

            //StreamWriter writer = null;
            //try
            //{
            //    writer = new StreamWriter();

            //    writer.Write("asdfsa");
            //    return;
            //}

            //catch
            //{
            //}
            //finally
            //{
            //    writer.Close();
            //}
        }
    }
}

MOdel里的增删改查方法

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

namespace MvcApplication1.Models
{
    public class InfoBF
    {
        private MyDBDataContext _Context = new MyDBDataContext();
        public List<Info> Select()
        {
            return _Context.Info.ToList();
        }
        public Info Select(string code)
        {
            var query = _Context.Info.Where(p=>p.Code == code);
            if (query.Count() > 0)
            {
                return query.First();
            }
            return null;
        }
        public void Insert(string code, string name, bool sex, string nation, DateTime birthday)
        {
            Info data = new Info
            {
                Code = code,
                Name = name,
                Sex = sex,
                Nation = nation,
                Birthday = birthday
            };
            _Context.Info.InsertOnSubmit(data);
            _Context.SubmitChanges();
        }
        //添加数据，强类型数据传值方法。非常简单
        public void Insert(Info data)
        {
            _Context.Info.InsertOnSubmit(data);
            _Context.SubmitChanges();
        }
        public void Delete(string code)
        {
            var query = _Context.Info.Where(p=>p.Code == code);
            if (query.Count() > 0)
            {
                Info data = query.First();
                _Context.Info.DeleteOnSubmit(data);
                _Context.SubmitChanges();
            }
        }
        public void Update(string code, string name, bool sex, string nation, DateTime birthday)
        {
            var query = _Context.Info.Where(p => p.Code == code);
            if (query.Count() > 0)
            {
                Info data = query.First();
                data.Name = name;
                data.Sex = sex;
                data.Nation = nation;
                data.Birthday = birthday;
                _Context.SubmitChanges();
            }
        }
    }
}

视图里的Html代码

@using MvcApplication1.Models;
@model List<Info>
@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
    <style type="text/css">

        .tbhead {
            background-color:navy;
            text-align:center;
            color:white;
            font-weight:bold;
        }
        .tbrow {
            text-align:center;
            background-color:#FFFFcc;
        }
    </style>
</head>
<body>
    <div>
        <table id="tbinfo" width="100%" cellpadding="4" cellspacing="1" bgcolor="black" border="0">
            <tr class="tbhead">
                <td>代号</td>
                <td>姓名</td>
                <td>性别</td>
                <td>民族</td>
                <td>生日</td>
                <td>操作</td>
            </tr>

          @{
              foreach( Info data in Model)
              {
            <tr class="tbrow">
                <td>@data.Code</td>
                <td>@data.Name</td>
                <td><img src="@(data.Sex.Value?"images/male.png":"images/female.png")" /></td>
                <td>@data.Nation</td>
                <td>@data.Birthday</td>
                <td>

                    @* Html帮助的用法，主要用于form表单和超链接*@
                    @Html.ActionLink("修改", "Edit", "Home", new {id=data.Code}, new { })
                    @Html.ActionLink("删除", "Delete", "Home", new { id = data.Code }, new { onclick="return confirm(‘确认要删除吗？‘)"})
                </td>
            </tr>
            }
          }
        </table>
        @Html.ActionLink("添加人员", "Add", "Home")
    </div>
</body>
</html>

@using MvcApplication1.Models;
@model Info
@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Edit</title>
</head>
<body>
    <div>
        @* Html帮助form 表单的用法*@
        @using(Html.BeginForm("Update","Home", FormMethod.Post)){
        <h1>修改人员</h1>
        <div>
            @{
                //Info data = ViewBag.Data as Info;
                //if(data != null)
                if(Model != null)
                {
           @* 下面这段代码非常重要！！！！！！！！！！！*@
            <div>
            代号：@Html.TextBoxFor(p=>p.Code) @*@Html.TextBox("code",Model.Code)*@<br/>
            姓名：@Html.TextBoxFor(m=>m.Name)@*@Html.TextBox("name",Model.Name)*@<br/>
            性别：@Html.RadioButtonFor(sg=>sg.Sex,"true") @*@Html.RadioButton("sex","true",Model.Sex == true)*@男 @Html.RadioButtonFor(p=>p.Sex,"false") @*@Html.RadioButton("sex","false",Model.Sex == false)*@女<br/>
            民族：@Html.DropDownListFor(p=>p.Nation,ViewBag.Nations as SelectList) @*@Html.DropDownList("nation",ViewBag.Nations as SelectList)*@ <br/>
            生日：@Html.TextBoxFor(p=>p.Birthday) @*@Html.TextBox("birthday",Model.Birthday)*@ <br/>
            <input id="Submit1" type="submit" value="更新" />
            </div>
                }
            }
        </div>
        }

    </div>
</body>
</html>

@using MvcApplication1.Models;
@model Info
@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Add</title>
    <style type="text/css">
        .test {
            border:0px;
            border-bottom:1px solid black;
        }
    </style>
</head>
<body>
    <div>

        @*下面这段代码非常重要！！！！！！！！！！！！！！！！！！！！！！！！！！*@
        @*@{Html.BeginForm("Insert", "Home", FormMethod.Post);}*@
        @using(Html.BeginForm("Insert","Home", FormMethod.Post)){
        <h1>添加人员</h1>
        <div>

            <div>
            代号：@Html.TextBoxFor(p=>p.Code) @*@Html.TextBox("code",  "",new { @class="test"})*@<br/>
            姓名：@Html.TextBox("name", "", new { @class="test"})<br/>
            性别：@Html.RadioButton("sex","true",true) 男 @Html.RadioButton("sex","false") 女<br/>
            民族：@Html.DropDownList("nation",ViewBag.Data as SelectList)<br/>
            生日：@Html.TextBox("birthday", "", new { @class="test"})<br/>
            <input id="Submit1" type="submit" value="更新" />

            </div>

        </div>
        }

        @*@{Html.EndForm();}*@
    </div>
</body>
</html>