有没有Linq to EF 的专家，疑难问题？

[zhang1struts1yun]

            string log_user = Request.Form["log_user"];
            string log_org = Request.Form["log_org"];
            
            ParameterExpression parameter1 = Expression.Parameter(typeof(SJJH_DLQX_LOG), "D");
            ConstantExpression constant1 = Expression.Constant(log_user);
            ConstantExpression constant2 = Expression.Constant(log_org);
            var query1 = Expression.Call(Expression.Default(typeof(string)), typeof(string).GetMethod("Contains"), Expression.Default(typeof(string)));
            var query2 = Expression.Call(Expression.Default(typeof(string)), typeof(string).GetMethod("Contains"), Expression.Default(typeof(string)));
            if (!string.IsNullOrEmpty(log_user))
            {
                query1 = Expression.Call(Expression.PropertyOrField(parameter1, "log_user"), typeof(string).GetMethod("Contains"), constant1);
            }
            if (!string.IsNullOrEmpty(log_org))
            {
                query2 = Expression.Call(Expression.PropertyOrField(parameter1, "log_org"), typeof(string).GetMethod("Contains"), constant2);
            }
            var query = Expression.And(query1, query2);
            var lambda1 = Expression.Lambda<Func<SJJH_DLQX_LOG, Boolean>>(query, parameter1);
            lambda1.Compile();

                temp = db.Set<T>().Where<T>(whereLambda);
                total = temp.Count(); // 这一行报错：未将对象引用到实例

[feiyun0112]

whereLambda 在哪赋值？

[zhang1struts1yun]

不好意思？ temp = db.Set<T>().Where<T>(lambda1.Compile());