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public class BaseRepository
   
     where T : class    {        //实例化EF框架        DataModelContainer db = new DataModelContainer();        //添加        public T AddEntities(T entity)        {            db.Entry
    
     (entity).State = EntityState.Added;            db.SaveChanges();            return entity;        }        //修改        public bool UpdateEntities(T entity)        {            db.Set
     
      ().Attach(entity);            db.Entry
      
       (entity).State = EntityState.Modified;            return db.SaveChanges() > 0;        }        //删除        public bool DeleteEntities(T entity)        {            db.Set
       
        ().Attach(entity);            db.Entry
        
         (entity).State = EntityState.Deleted; return db.SaveChanges() > 0; } //查询 public IQueryable
         
           LoadEntities(Func
          
            wherelambda) { return db.Set
           
            ().Where
            
             (wherelambda).AsQueryable(); } //分页 public IQueryable
             
               LoadPagerEntities
              (int pageSize, int pageIndex, out int total, Func
               
                 whereLambda, bool isAsc, Func
                
                  orderByLambda) { var tempData = db.Set
                 
                  ().Where
                  
                   (whereLambda); total = tempData.Count(); //排序获取当前页的数据 if (isAsc) { tempData = tempData.OrderBy
                   
                    (orderByLambda). Skip
                    
                     (pageSize * (pageIndex - 1)). Take
                     
                      (pageSize).AsQueryable(); } else { tempData = tempData.OrderByDescending
                      
                       (orderByLambda). Skip
                       
                        (pageSize * (pageIndex - 1)). Take
                        
                         (pageSize).AsQueryable(); } return tempData.AsQueryable(); } }
                        
                       
                      
                     
                    
                   
                  
                 
                
               
             
            
           
          
         
        
       
      
     
    
   

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