浮雲雅築: [研究] ASP.NET MVC 5入門(六)從 Controller 存取 Model 的資料

[研究] ASP.NET MVC 5入門(六)從 Controller 存取 Model 的資料

2016-06-22

這篇是參考下面這篇的學習，不過工具從 Visual Studio 2013 改成 Visual Studio 2015 with Update 2 繁體中文版；網頁上有提到一篇新的改用 Visual Studio 2015，但是那篇要另外安裝 ASP.NET Core，而目前最新為 ASP.NET Code 1.0.0 RC2，並非正式版，所以暫時不想安裝和參考那篇。

內容不是完全翻譯，因為練習的心得，有增加、刪減圖片和文字。

Getting Started with ASP.NET MVC 5
http://www.asp.net/mvc/overview/getting-started/introduction/getting-started

[研究] ASP.NET MVC 5入門(一)開始
http://shaurong.blogspot.com/2016/06/aspnet-mvc-5_21.html

[研究] ASP.NET MVC 5入門(二)增加控制器(Controller)
http://shaurong.blogspot.com/2016/06/aspnet-mvc-5controller.html

[研究] ASP.NET MVC 5入門(三)增加檢視(View)

http://shaurong.blogspot.com/2016/06/aspnet-mvc-5view.html

[研究] ASP.NET MVC 5入門(四)增加模型(Model)
http://shaurong.blogspot.com/2016/06/aspnet-mvc-5model.html

[研究] ASP.NET MVC 5入門(五)建立 SQL Server LocalDB 的連線字串
http://shaurong.blogspot.com/2016/06/aspnet-mvc-5-sql-server-localdb.html

6.Accessing Your Model's Data from a Controller

http://www.asp.net/mvc/overview/getting-started/introduction/accessing-your-models-data-from-a-controller

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MVC 對應
M (Model) : Models\Movies.cs
V (View) : Views\Shared 預設共用目錄
Views\Movies\Create.cshtml
Views\Movies\Delete.cshtml
Views\Movies\Details.cshtml
Views\Movies\Edit.cshtml
Views\Movies\Index.cshtml
C (Controller) : Controllers\MoviesController.cs

Controllers\MoviesController.cs 產生內容如下

using System;

using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
using MvcMovie.Models;

namespace MvcMovie.Controllers
{
public class MoviesController : Controller
{
private MovieDBContext db = new MovieDBContext();

// GET: Movies
public ActionResult Index()
{
return View(db.Movies.ToList());
}

// 下面會對應 Views\Movies\Details.cshtml

// GET: Movies/Details/5
public ActionResult Details(int? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
Movie movie = db.Movies.Find(id);
if (movie == null)
{
return HttpNotFound();
}
return View(movie);
}

// GET: Movies/Create
public ActionResult Create()
{
return View();
}

// POST: Movies/Create
// 若要免於過量張貼攻擊，請啟用想要繫結的特定屬性，如需
// 詳細資訊，請參閱 http://go.microsoft.com/fwlink/?LinkId=317598。
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "ID,Title,ReleaseDate,Genre,Price")] Movie movie)
{
if (ModelState.IsValid)
{
db.Movies.Add(movie);
db.SaveChanges();
return RedirectToAction("Index");
}

return View(movie);
}

// GET: Movies/Edit/5
public ActionResult Edit(int? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
Movie movie = db.Movies.Find(id);
if (movie == null)
{
return HttpNotFound();
}
return View(movie);
}

// POST: Movies/Edit/5
// 若要免於過量張貼攻擊，請啟用想要繫結的特定屬性，如需
// 詳細資訊，請參閱 http://go.microsoft.com/fwlink/?LinkId=317598。
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Edit([Bind(Include = "ID,Title,ReleaseDate,Genre,Price")] Movie movie)
{
if (ModelState.IsValid)
{
db.Entry(movie).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}
return View(movie);
}

// GET: Movies/Delete/5
public ActionResult Delete(int? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
Movie movie = db.Movies.Find(id);
if (movie == null)
{
return HttpNotFound();
}
return View(movie);
}

// POST: Movies/Delete/5
[HttpPost, ActionName("Delete")]
[ValidateAntiForgeryToken]
public ActionResult DeleteConfirmed(int id)
{
Movie movie = db.Movies.Find(id);
db.Movies.Remove(movie);
db.SaveChanges();
return RedirectToAction("Index");
}

protected override void Dispose(bool disposing)
{
if (disposing)
{
db.Dispose();
}
base.Dispose(disposing);
}
}
}

Views\Movies\Details.cshtml 內容如下

@model MvcMovie.Models.Movie

@{
ViewBag.Title = "Details";
}

<h2>Details</h2>

<div>
<h4>Movie</h4>
<hr />
<dl class="dl-horizontal">
<dt>
@Html.DisplayNameFor(model => model.Title)
</dt>

<dd>
@Html.DisplayFor(model => model.Title)
</dd>

<dt>
@Html.DisplayNameFor(model => model.ReleaseDate)
</dt>

<dd>
@Html.DisplayFor(model => model.ReleaseDate)
</dd>

<dt>
@Html.DisplayNameFor(model => model.Genre)
</dt>

<dd>
@Html.DisplayFor(model => model.Genre)
</dd>

<dt>
@Html.DisplayNameFor(model => model.Price)
</dt>

<dd>
@Html.DisplayFor(model => model.Price)
</dd>

</dl>
</div>
<p>
@Html.ActionLink("Edit", "Edit", new { id = Model.ID }) |
@Html.ActionLink("Back to List", "Index")
</p>

Views\Movies\Indexs.cshtml 內容如下

@model IEnumerable<MvcMovie.Models.Movie>

ViewBag.Title = "Index";

}

<h2>Index</h2>

<p>

@Html.ActionLink("Create New", "Create")

</p>

<tr>

<th>

@Html.DisplayNameFor(model => model.Title)

</th>