Books.web/Controllers/HomeController.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Books.Service.Entity;
using Books.Service;
using System.Linq.Expressions;

namespace Books.web.Controllers
{
    public class HomeController : Controller
    {
        public BaseService<ClassifyEntity> classify { get; set; } = new BaseService<ClassifyEntity>();
        public BookService book { get; set; } = new BookService();
        // GET: Home
        public ActionResult Index(int id,int index)
        {
            int total ;
            Expression<Func<BookEntity, bool>> where;
            if (id == 0)
                where =e=>true;
            else
                where= e => e.ClassifyId == id;
            ViewData["book"] = book.GetPageDate(8, index,out total, where);
            ViewData["total"] = (total+7)/8;
            ViewData["id"] = id;
            return View();
        }
        public ActionResult Details(int id)
        {
            var bo= book.GetBook(id);
            return View(bo);
        }
        public JsonResult Classify()
        {
            ViewBag.ip = Request.UserHostAddress;
            var data = classify.GetAll().Select(e => new { id = e.Id, name = e.Name });
            return Json(data);
        }
    }
}