using EntityModel;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Transactions;namespace EntityFrameworkDB
{class DB{public static void Add(){using (var dbContext = new DemoEntity()){var awardPool = new GXL_AwardPool(){ShopId = 2};dbContext.GXL_AwardPool.Add(awardPool);dbContext.SaveChanges();}}public static void Update(){using (var dbContext = new DemoEntity()){var awardPool = new GXL_AwardPool(){ID = 1,ShopId = 2};dbContext.GXL_AwardPool.Attach(awardPool);dbContext.Entry(awardPool).State = EntityState.Modified;dbContext.SaveChanges();}}public static void Del(){using (var dbContext = new DemoEntity()){var awardPool = new GXL_AwardPool(){ID = 1};dbContext.GXL_AwardPool.Attach(awardPool);dbContext.GXL_AwardPool.Remove(awardPool);dbContext.SaveChanges();}}public static void GetModel(){using (var dbContext = new DemoEntity()){//查询单个实体var awardPool = dbContext.GXL_AwardPool.FirstOrDefault(x => x.ID == 1);//查询多个实体var awardPoolList = dbContext.GXL_AwardPool.Where(x => x.ShopId == 1).ToList();//通过sql语句查询单个实体//dbContext.Database.SqlQuery<ShopsMyDto>(sql).FirstOrDefault();//通过sql语句查谒多个实体//dbContext.GXL_AwardPool.Where(x => x.ShopId == 1).ToList();
            }}/// <summary>/// 提交事务/// </summary>public static void Tijiao(){using (var dbContext = new DemoEntity()){using (var scope = new TransactionScope()){try{var awardPool = new GXL_AwardPool(){ShopId = 2};dbContext.GXL_AwardPool.Add(awardPool);var awardPoolIn = new GXL_AwardPoolIn(){ID = 1,ShopId = 2};dbContext.GXL_AwardPoolIn.Attach(awardPoolIn);dbContext.Entry(awardPoolIn).State = EntityState.Modified;//进行事务提交
                        dbContext.SaveChanges();scope.Complete();}catch{}}}}}
}