http://duoduokou.com/csharp/38781170012921760708.htmlWebAug 4, 2024 · What is the difference between Select and SelectMany in Linq C - Select operator produces one result value for every source SelectMany Operator belong to …
[C#] LINQ之SelectMany - 腾讯云开发者社区-腾讯云
WebFeb 22, 2024 · 微信公众号:趣编程ACE关注可了解更多的.NET日常实战开发技巧,如需源码 后台回复 源码 即可;如果觉得对你有帮助,欢迎关注C# Linq中 Select && SelectMany 使用技巧Select 和 SelectMany 是我们开发中对集合常用的两个扩展方法,今天我就用几个小例子并结合源码形式 ... WebJul 12, 2024 · Using SelectMany. You can do the same thing in a single line using LINQ’s SelectMany. List allPhoneNumbers = myCompanyOffices.SelectMany (b => b.PhoneNumbers).ToList (); This …can grinding teeth at night cause headaches
C# Lambda表达式select()和where()的区别 - sunny123456 - 博客园
WebMar 18, 2012 · It is because of the anonymous object in your SelectMany as well as the GroupBy. GroupBy does not return an IEnumerable, but rather IEnumerable> - essentially a collection of collections where each sub collection has the same key value.. In the case you have, grouping by the … WebC# LINQ选择非空字符串,c#,linq,C#,Linq,有一个包含两个字符串字段的结构:a和B 我想将一个S数组转换为字符串数组,其中包含所有非空的唯一As和b。 最有效的方法是什么 问候, var myArray = S.Select( x => new [] { x.A, x.B }) .SelectMany( x => x) .Where( x=> !string.IsNullOrEmpty(x)) .Distinct() WebNov 1, 2024 · Linq C#中的Select和SelectMany有什么区别? 阅读 56 收藏 0 点赞 0 评论 0 Select运算符为属于投影运算符类别的每个源SelectMany运算符产生一个结果值。fitch motorsports