c# linq distinct group by 嵌套列表 - C# 代码示例

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📜 c# linq distinct group by 嵌套列表 - C# 代码示例

📅 最后修改于: 2022-03-11 14:49:07.189000 🧑 作者: Mango

代码示例1

var result = hotels.SelectMany(hotel => hotel.RoomType.Select(room => new { Id = room.RoomId, Hotel = hotel }))
                   .GroupBy(item => item.Id)
                   .Select(group => group.FirstOrDefault());