Hello everyone I have a variable of Type List (of) where I have saved the id, code, name, etc from a list of clients. What I need is to get the last id of the whole list ... I can do it with for each but I prefer a way where I can locate the last row (by the id field) directly
Do something like this:
' Crea un array vacío.
Dim frutas() As String = {}
' Obtiene el último elemento del array, o bien,
' un valor por defecto (probablemente null)
' si el arreglo está vacío
Dim ultimo As String = frutas.LastOrDefault()
' Mostrar el resultado.
MsgBox(IIf(String.IsNullOrEmpty(ultimo),
"<string vacío o nulo>",
ultimo))
' El código produce la siguiente salira:
'
' <string vacío o nulo>
It would be something like this:
Dim lst As New List(Of T)
...
...
If lst.Count > 0 Then
Dim lastItem = lst(lst.Count - 1)
End If
To search for an item for a specific id, you should use Linq
Dim itm = lst.FirstOrDefault(Function(f) f.Id = varId)