/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 vote213 views1 answer
Get index c#
C#
0 vote165 views1 answer
Unity NetworkBehaviour the type or namespace could not be found
C#
1 vote161 views1 answer
Get program path c#
C#
0 vote166 views1 answer
Make tooltip disappear c#
C#
0 vote168 views1 answer
C# convert 1 to 01
C#
2 votes200 views2 answers
How to convert object in string JSON c#
C#
0 vote158 views1 answer
C# extension method in non static class
C#
0 vote165 views1 answer
Unity format float to 2 decimal places
C#Unity
0 vote152 views1 answer
C# Numbers Only
C#
0 vote207 views1 answer
Length of array c# unity
C#Unity