v1.0.1

CC.Yi.BLL/BaseBll.cs

@@ -15,6 +15,7 @@ namespace CC.Yi.BLL
         {
             CurrentDal = cd;
         }
+   
         public IQueryable<T> GetAllEntities() 
         {
             return CurrentDal.GetAllEntities();
@@ -49,12 +50,24 @@ namespace CC.Yi.BLL
             return entity;
         }
 
+        public bool Add(IEnumerable<T> entities)
+        {
+            CurrentDal.AddRange(entities);
+            return DbSession.SaveChanges() > 0;
+        }
+
         public bool Update(T entity)
         {
             CurrentDal.Update(entity);
             return DbSession.SaveChanges() > 0;
         }
 
+        public bool Update(T entity, params string[] propertyNames)
+        {
+            CurrentDal.Update(entity,propertyNames);
+            return DbSession.SaveChanges() > 0;
+        }
+
         public bool Delete(T entity)
         {
             CurrentDal.Delete(entity);
@@ -73,14 +86,24 @@ namespace CC.Yi.BLL
             return DbSession.SaveChanges() > 0;
         }
 
-        public int DeleteList(List<int> ids)
+        public bool Delete(IEnumerable<int> ids)
         {
             foreach (var id in ids)
             {
                 CurrentDal.Detete(id);
             }
-            return DbSession.SaveChanges();//这里把SaveChanges方法提到了循环体外，自然就与数据库交互一次
+            return DbSession.SaveChanges()>0;
         }
+        public bool Delete(Expression<Func<T, bool>> where)
+        {
+            IQueryable<T> entities =  CurrentDal.GetEntities(where);
+            if (entities != null)
+            {
+                CurrentDal.DeteteRange(entities);
 
+                return DbSession.SaveChanges()>0;
+            }
+            return false;
+        }
     }
 }