摘要： using System;using System.Collections.Generic;using System.Data.Entity.Infrastructure;using System.Linq;using System.Linq.Expressions;using System.Reflection;using System.Text;namespace P04DAL{public class BaseDAL where T:class,new(){/// /// 数据上下文对象/// P05MODEL.LeaveWordBoradEntities db = new P05MOD 阅读全文