/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

0 vote330 views1 answer
How to check datagridview cell is null or empty
C#
0 vote310 views1 answer
Calculate string length vs pixels c#
C#
5 votes333 views3 answers
Substring c# after character
C#
3 votes315 views1 answer
Unity if in editor
C#
7 votes342 views4 answers
C# append to file
C#
3 votes324 views1 answer
C# array backwards
C#
0 vote306 views1 answer
How to get the width of the screen C#
C#
0 vote317 views1 answer
Quine in c#
C#
0 vote335 views1 answer
Button not working unity
C#
2 votes378 views1 answer
Camera follow player unity smooth
C#Unity