c# – 如何改进此排序代码?
发布时间:2020-12-15 04:22:28 所属栏目:百科 来源:网络整理
导读:我正在检查sort参数并构建一堆if语句: if (sortDirection == "ASC"){ if (sortBy == "Id") return customerList.OrderBy(x = x.Id).Skip(startIndex).Take(pageSize).ToList(); if (sortBy == "FirstName") return customerList.OrderBy(x = x.FirstName).S
我正在检查sort参数并构建一堆if语句:
if (sortDirection == "ASC") { if (sortBy == "Id") return customerList.OrderBy(x => x.Id).Skip(startIndex).Take(pageSize).ToList(); if (sortBy == "FirstName") return customerList.OrderBy(x => x.FirstName).Skip(startIndex).Take(pageSize).ToList(); if (sortBy == "City") return customerList.OrderBy(x => x.City).Skip(startIndex).Take(pageSize).ToList(); } else { if (sortBy == "Id") return customerList.OrderByDescending(x => x.Id).Skip(startIndex).Take(pageSize).ToList(); if (sortBy == "FirstName") return customerList.OrderByDescending(x => x.FirstName).Skip(startIndex).Take(pageSize).ToList(); if (sortBy == "City") return customerList.OrderByDescending(x => x.City).Skip(startIndex).Take(pageSize).ToList(); } 我该如何做得更好? 解决方法
单独排序和查询的其余部分 – 对于您不必在代码库中复制的每个查询,相同的部分(保持
DRY):
var query = customerList; if (sortDirection == "ASC") { if (sortBy == "Id") query = query.OrderBy(x => x.Id); ///and so on } query = query.Skip(startIndex).Take(pageSize).ToList(); (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |