Menu
I'm trying out some LINQ expressions and can't get them to work with the List class. Basically I want to be able to sort a list of custom objects by property type, however the C# LINQ syntax is KILLING me and I can't figure out how to convert it to VB
Class Foo
Sub New(Name As String, Position As Integer)
Me.Name = Name
Me.Position = Position
End Sub
Public Name As String
Public Position As Integer
End Class
Sub Main()
Dim l As New List(Of Foo)
l.Add(New Foo("C", 3))
l.Add(New Foo("B", 2))
l.Add(New Foo("A", 1))
Dim asc = ..... (sort l by position asecnding)
Dim desc = ..... (sort l by position descending)
End Sub
972
LINQ includes five sorting operators: OrderBy, OrderByDescending, ThenBy, ThenByDescending and Reverse. LINQ query syntax does not support OrderByDescending, ThenBy, ThenByDescending and Reverse. It only supports 'Order By' clause with 'ascending' and 'descending' sorting direction.
In LINQ, the OrderBy operator is used to sort the list/ collection values in ascending order. In LINQ, if we use order by the operator by default, it will sort the list of values in ascending order. We don't need to add any ascending condition in the query statement.
OrderByDescending Operator If you want to rearrange or sort the elements of the given sequence or collection in descending order in query syntax, then use descending keyword as shown in below example. And in method syntax, use OrderByDescending () method to sort the elements of the given sequence or collection.
Dim asc = From f In l Order By f.Position
Dim desc = From f In l Order By f.Position Descending
I used c# to VB converter..
Dim sortedasc = l.OrderBy(Function(k) k.Position)
Dim sorteddesc = l.OrderByDescending(Function(k) k.Position)
this should work..
13
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
