Asp.Net MVC结合Linq to SQL实现CRUD

ICategoryService.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Webdiyer.WebControls.Mvc;

namespace BookShopMVC.Models.Interfaces
{
public interface ICategoryService
{
PagedList<Category> CategoryListPgae(int? id);
void Add(Category c);
void Delete(int id);
void Edit(Category c);
Category GetCategory(int id);
}
}

MockCategoryService.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using BookShopMVC.Models.Interfaces;
using Webdiyer.WebControls.Mvc;

namespace BookShopMVC.Models.MockModels
{
public class MockCategoryService : ICategoryService
{
//默认分页数
private const int defaultPageSize = 10;

//使用MvcPager控件进行分页
public Webdiyer.WebControls.Mvc.PagedList<Category> CategoryListPgae(int? id)
{
using (var db = new DataRepositoryDataContext())
{
PagedList<Category> data = db.Category.ToPagedList(id ?? 1, defaultPageSize);
return data;
}
}

public void Add(Category c)
{
using (var db = new DataRepositoryDataContext())
{
db.Category.InsertOnSubmit(c);
db.SubmitChanges();
}
}

public void Delete(int id)
{
using (var db = new DataRepositoryDataContext())
{
Category c1 = db.Category.First<Category>(item => item.CategoryId == id);
db.Category.DeleteOnSubmit(c1);
db.SubmitChanges();
}
}

public void Edit(Category c)
{
using (var db = new DataRepositoryDataContext())
{
Category c1 = db.Category.First<Category>(item => item.CategoryId == c.CategoryId);
c1.CategoryName = c.CategoryName;
db.SubmitChanges();
}
}

public Category GetCategory(int id)
{
using (var db = new DataRepositoryDataContext())
{
return db.Category.Single(c => c.CategoryId == id);
}
}
}
}

控制层：

CategoryController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using BookShopMVC.Models.Interfaces;
using BookShopMVC.Models.MockModels;
using Webdiyer.WebControls.Mvc;
using BookShopMVC.Models;

namespace BookShopMVC.Controllers
{
public class CategoryController : Controller
{
ICategoryService service = new MockCategoryService();

public ActionResult Index(int? id)
{
PagedList<Category> pages = service.CategoryListPgae(id);
return View(pages);
}

public ActionResult Add()
{
return View("AddCategory");
}
public ActionResult AddCategory(Category c)
{
service.Add(c);
return RedirectToAction("Index");
}
public ActionResult Delete(int id)
{
service.Delete(id);
return RedirectToAction("Index");
}
public ActionResult Edit(int id)
{
Category c = service.GetCategory(id);
return View("EditCategory",c);
}
public ActionResult EditCategory(Category c)
{
service.Edit(c);
return RedirectToAction("Index");
}
}
}