MVC Code First

首先配置好web.config

  <connectionStrings>
    <add name="BookDbContext" connectionString=" Data Source=.\SQLEXPRESS;Initial Catalog=sales;Persist Security Info=True;Integrated Security=SSPI;"
     providerName="System.Data.SqlClient" />
  </connectionStrings>

然后在Model里添加一个Book 类和一个BookDbContext类

Book类

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

namespace MvcApplication3.Models
{
    public class Book
    {
        public int BookID { get; set; }
        public string BookName { get; set; }
        public string Author { get; set; }
        public string Publisher { get; set; }
        public decimal Price { get; set; }
        public string Remark { get; set; }
    }
}

BookDbContext类

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

namespace MvcApplication3.Models
{
    /// <summary>
    /// BookDbContext代表EF中Book在数据库中的上下文对象，通过DbSet<Book>使实体类与数据库关联起来。Books属性表示数据库中的数据集实体，用来处理数据的存取与更新。BookDbContext派生自DbContext，需要添加System.Data.Entity的引用。
    /// </summary>
    public class BookDbContext:DbContext
    {
        public DbSet<Book> Books { get; set; }
    }
}

添加一个Book控制器

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcApplication3.Models;

namespace MvcApplication3.Controllers
{
    public class BookController : Controller
    {
        //
        // GET: /Book/

        BookDbContext db = new BookDbContext();

        /// <summary>
        /// //查询出所有的Book对象，组成一个Books，让它展示在页面首页
        /// </summary>
        /// <returns></returns>
        public ActionResult Index() 
        {
            var books = from b in db.Books
                        select b;
            return View(books.ToList());
        }

        [HttpGet]
        public ActionResult Create()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Create(Book book)
        {

            //MVC验证中所有属性验证成功ModelState.IsValid等于true,只要有一个验证不成功ModelState.IsValid就等于false 所以我们可以通过该属性来判断数据的有效性，但有时在数据验证时有时我们不需要验证所有的数据，比如登录时只需要验证用户名及密码格式是否输入正确即可。

            if (ModelState.IsValid)
            {
                db.Books.Add(book);
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            else
            {
                return View(book);
            }

        }
        [HttpGet]
        public ActionResult Delete(int id)
        {
            var data = from DataItem in db.Books
                       where DataItem.BookID == id
                       select DataItem;
            ViewData.Model = data.Single();
            return View();
        }

        [HttpPost]
        public ActionResult Delete(int id, FormCollection c)
        {
            //Find()是返回满足条件的第一个元素，如果没有该元素，则返回null。
            Book book = db.Books.Find(id);
            db.Books.Remove(book);
            db.SaveChanges();
            return RedirectToAction("Index");

        }

        public ActionResult Edit(int id)
        {
            //var data = from dataitem in db.Books
            //           where dataitem.BookID == id
            //           select dataitem;
            //ViewData.Model = data.Single();
            //return View();

            //Find()是返回满足条件的第一个元素(即：Books中 BookID的的值为id的Book)，如果没有该元素，则返回null。
            Book book = db.Books.Find(id);
            if (book == null)
            {
                return RedirectToAction("Index");
            }   
            return View(book);

        }
        [HttpPost]
        public ActionResult Edit(Book newbook)
        {
            try
            {
                Book oldbook = db.Books.Find(newbook.BookID);

                //使用来自控制器的当前值提供程序的值更新指定的模型实例
                UpdateModel(oldbook);

                //将在此上下文中所做的所有更改保存到基础数据库。
                db.SaveChanges();
                return RedirectToAction("Index");

            }
            catch (Exception ex)
            {
                //AddModelError:将指定的错误消息添加到与指定键关联的模型状态字典的错误集合中。
                ModelState.AddModelError("", "修改失败，请查看详细错误信息" + ex.Message + ex.StackTrace);
            }
            return View(newbook);
        }

        public ActionResult Details(int id)
        {
            //Find()是返回满足条件的第一个元素(即：Books中 BookID的的值为id的Book)，如果没有该元素，则返回null。
            Book book = db.Books.Find(id);
            if (book == null)
            {
                return RedirectToAction("Index");
            }
            return View(book);
        }

    }
}

view

Index 视图 首页

@model IEnumerable<MvcApplication3.Models.Book>
@{
    ViewBag.Title = "图书列表-MvcBook";
}
<h2>
    图书列表</h2>
<p>
    @Html.ActionLink("增加图书", "Create")
</p>
<table>
    <tr>
        <th>图书名称</th><th>作者</th><th>出版社</th><th>价格</th><th>备注</th>
    </tr>
    @foreach (var item in Model)
    {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.BookName)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Author)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Publisher)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Price)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Remark)
            </td>
            <td>
                @Html.ActionLink("编辑", "Edit", new { id = item.BookID }) |
                @Html.ActionLink("详细", "Details", new { id = item.BookID }) |
                @Html.ActionLink("删除", "Delete", new { id = item.BookID })
            </td>
        </tr>
    }
</table>

Create

@model MvcApplication3.Models.Book

@{
    ViewBag.Title = "Create";
}

<h2>增加</h2>

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>Book</legend>

        <div class="editor-label">
            @Html.LabelFor(model => model.BookName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.BookName)
            @Html.ValidationMessageFor(model => model.BookName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Author)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Author)
            @Html.ValidationMessageFor(model => model.Author)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Publisher)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Publisher)
            @Html.ValidationMessageFor(model => model.Publisher)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Price)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Price)
            @Html.ValidationMessageFor(model => model.Price)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Remark)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Remark)
            @Html.ValidationMessageFor(model => model.Remark)
        </div>

        <p>
            <input type="submit" value="增加" />
        </p>
    </fieldset>
}

<div>
    @Html.ActionLink("跳转到首页", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

Delete

@model MvcApplication3.Models.Book

@{
    ViewBag.Title = "Delete";
}

<h2>Delete</h2>

<h3>Are you sure you want to delete this?</h3>
<fieldset>
    <legend>Book</legend>

    <table>
    <tr><th>图书名称:</th><th>@Html.DisplayFor(model => model.BookName)</th></tr>
    <tr><th>作者:</th><th>@Html.DisplayFor(model => model.Author)</th></tr>
    <tr><th>出版社:</th><th>@Html.DisplayFor(model => model.Publisher)</th></tr>
    <tr><th>价格:</th><th>@Html.DisplayFor(model => model.Price)</th></tr>
    <tr><th>备注</th><th>@Html.DisplayFor(model => model.Remark)</th></tr>
    </table>

</fieldset>
@using (Html.BeginForm()) {
    <p>
        <input type="submit" value="删除" /> |
        @Html.ActionLink("跳转到首页", "Index")
    </p>
}

Edit

@model MvcApplication3.Models.Book

@{
    ViewBag.Title = "Edit";
}

<h2>编辑</h2>

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>Book</legend>

        @Html.HiddenFor(model => model.BookID)

        <div class="editor-label">
            @Html.LabelFor(model => model.BookName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.BookName)
            @Html.ValidationMessageFor(model => model.BookName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Author)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Author)
            @Html.ValidationMessageFor(model => model.Author)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Publisher)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Publisher)
            @Html.ValidationMessageFor(model => model.Publisher)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Price)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Price)
            @Html.ValidationMessageFor(model => model.Price)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Remark)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Remark)
            @Html.ValidationMessageFor(model => model.Remark)
        </div>

        <p>
            <input type="submit" value="保存" />
        </p>
    </fieldset>
}

<div>
    @Html.ActionLink("跳转到首页", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

Details

@model MvcApplication3.Models.Book

@{
    ViewBag.Title = "Details";
}

<h2>Details</h2>

<fieldset>
    <legend>Book</legend>
    <table>
    <tr><th>图书名称:</th><th>@Html.DisplayFor(model => model.BookName)</th></tr>
    <tr><th>作者:</th><th>@Html.DisplayFor(model => model.Author)</th></tr>
    <tr><th>出版社:</th><th>@Html.DisplayFor(model => model.Publisher)</th></tr>
    <tr><th>价格:</th><th>@Html.DisplayFor(model => model.Price)</th></tr>
    <tr><th>备注</th><th>@Html.DisplayFor(model => model.Remark)</th></tr>
    </table>
</fieldset>
<p>
    @Html.ActionLink("编辑", "Edit", new { id=Model.BookID }) |
    @Html.ActionLink("跳转到首页", "Index")
</p>