一个简单的EF Linq MVC Web应用程序

-- 用户表
drop table [User] 
Create Table [User] 
(
 "Theserialnumber" int  IDENTITY   (1,   1)   NOT   NULL ,  
 "UserID"          varchar(50)  NOT   NULL ,
 "UserName"        varchar(30),
 "UserSet"         char(2),
 "Userphone"       char(11),
 "UserworkID"      varchar(50),
 "UserlevelID"       varchar(20),   
 "UserTypeID"      varchar(50),
 "UserCreationtime" dateTime,
 "UserhobbyID"     varchar(50),
 )
 alter table [User] add constraint pk_name primary key ("Theserialnumber","UserID");
 --用户工作表
 drop table Work
 Create Table Work
 (
   "UserworkID" varchar(50) Primary Key  NOT   NULL,
   "UserworkType" varchar(50),
   "WorkDetailsID"  varchar(50)
 )
 --用户工作详情表
 drop table WorkDetails
 Create Table WorkDetails
 (
  "WorkDetailsID" varchar(50) Primary Key,
  "WorkDetailsSituation" varchar(50)
  
 )
 
 --权限表
 drop table [level]
 Create Table [level]
 (
  "UserlevelID" varchar(50)  Primary Key,
  "UserleverlType" varchar(50)  
 )
 
 --类型表
 drop table UserType
 Create Table UserType
 (
 "UserTypeID" varchar(50)  Primary Key,
 "UserType"   varchar(50)
 )
 
 --业余表
 drop table Userhobby
 Create Table Userhobby
 (
  "UserhobbyID" varchar(50) Primary Key,
  "Userhobby"   varchar(50)
 )
 
--增加数据
 insert into [User](UserID,UserName,UserSet,Userphone,UserworkID,
                     UserlevelID,UserTypeID,UserCreationtime,UserhobbyID)
                     values(‘2020020901494949‘,‘张三‘,‘男‘,‘13817475159‘,‘1‘,
                     ‘1‘,‘1‘,2020/2/9,‘1‘)
               
insert into Work(UserworkID, UserworkType, WorkDetailsID)values(‘1‘,‘IT‘,‘2020020901494949‘)


insert into WorkDetails(WorkDetailsID, WorkDetailsSituation)values(‘2020020901494949‘,‘开发编码‘)

insert into [level] (UserlevelID, UserleverlType)values(‘1‘,‘管理员‘)
insert into [level] (UserlevelID, UserleverlType)values(‘2‘,‘普通用户‘)

insert into UserType(UserTypeID, UserType)values(‘1‘,‘开发人员‘)

insert into Userhobby(UserhobbyID, Userhobby)values(‘1‘,‘编码‘)
insert into Userhobby(UserhobbyID, Userhobby)values(‘2‘,‘吃‘)
insert into Userhobby(UserhobbyID, Userhobby)values(‘3‘,‘学习‘)
insert into Userhobby(UserhobbyID, Userhobby)values(‘4‘,‘工作‘)

        /// <summary>
        /// 多表查询
        /// </summary>
        /// <returns></returns>
        public static IQueryable GetDateSet()
        {
            FamilyServerEntities Family = new FamilyServerEntities();
            var v = from p in Family.User
                    join Work in Family.Work on p.UserworkID equals Work.UserworkID
                    join Level in Family.level on p.UserlevelID equals Level.UserlevelID
                    join Type in Family.UserType on p.UserTypeID equals Type.UserTypeID
                    join Details in Family.WorkDetails on Work.WorkDetailsID equals Details.WorkDetailsID
                    join Userhobby in Family.Userhobby on p.UserhobbyID equals Userhobby.UserhobbyID
                    orderby p.UserID
                    select new
                    {
                        UserID = p.UserID,
                        UserName = p.UserName,
                        UserSet = p.UserSet,
                        Userphone = p.Userphone,
                        UserworkType = Work.UserworkType,
                        WorkDetailsSituation = Details.WorkDetailsSituation,
                        UserleverlType = Level.UserleverlType,
                        UserType = Type.UserType1,
                        UserCreationtime = p.UserCreationtime,
                        Userhobby = Userhobby.Userhobby1
                    };
            // var Lambda = Family.User.Select(t => new { });
            return v;
        }

        /// <summary>
        /// 增加多条
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static int ADD(List<User> list)
        {
            using (FamilyServerEntities Family = new FamilyServerEntities())
            {
                foreach (var item in list)
                {
                    Family.User.Add(item);
                }
                return Family.SaveChanges();
            }
        }

        /// <summary>
        /// 修改多条
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static int Edit(List<User> list)
        {
            using (FamilyServerEntities Family = new FamilyServerEntities())
            {
                var v = (from p in Family.User select p).First();
                foreach (var item in list)
                {
                    v.UserName = item.UserName;
                }
                return Family.SaveChanges();
            }
        }

        /// <summary>
        /// 删除多条
        /// </summary>
        /// <param name="UserID"></param>
        /// <returns></returns>
        public static int Del(string UserID)
        {
            using (FamilyServerEntities Family = new FamilyServerEntities())
            {
                var v = (from p in Family.User where p.UserID == UserID select p).ToList();
                foreach (var item in v)
                {
                    Family.User.Remove(item);
                }
                return Family.SaveChanges();
            }
        }

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

namespace WebLinq.Controllers
{
    public class HomePageController : Controller
    {
        // GET: HomePage
        public ActionResult Index()
        {
            return View();
        }
        public ActionResult HomePage()
        {
            return Json(BLL.Family.GetDateSet(), JsonRequestBehavior.AllowGet);
            
        }
    }
}