/C#/C# linq distinct group by nested list

C# linq distinct group by nested list

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

Source: stackoverflow.com

Similar codes

1 vote269 views1 answer
Assign datasource to dropdownlist in c#
C#
0 vote252 views1 answer
How to use external resource.resx file in c#
C#
20 votes263 views2 answers
Random character c#
C#
2 votes263 views1 answer
How to copy a file in C#
C#
0 vote252 views1 answer
How to set border for groupbox in c#
C#
0 vote277 views1 answer
Library dll unless netloaded by AutoCAD
C#
1 vote246 views1 answer
How to say hello world in c#
C#
0 vote271 views1 answer
Fill dataset with list c#
C#
0 vote249 views1 answer
Unity I run exe second monitor
C#
3 votes270 views1 answer
Initialization synonym
C#