Question

我有一个数组......我需要从masterList.customField中排除此数组字符串中的所有项目，如下所示

string[] excludeItem = {"a","b","c"};

CustomDTO[] masterList = service.LoadMasterList();

masterList.Where(c=> masterList.customField NOT IN excludeItem

如何实现上面的NOT IN部分？

Answer 1

假设customField是一个字符串：

masterList.Where(c => !excludeItem.Contains(c.customField));

Answer 2

或者，作为LINQ查询：

var x = from c in masterList
        where !excludedItem.Contains(c.CustomField)
        select c;

LINQ查询过滤DTO

2 个答案: