iOS Question Select item

ItemSelected Picker1.GetItems(Column).Get(Row)

Sub Picker_click

    Dim p As Picker = Sender
  
    Msgbox( p.GetSelectedItem(?)), "PICKER" )

end sub

Dim Picker1 as Picker
Dim pickerItems As List
Dim data As List = su.LoadCSV(File.DirAssets, "datums.csv", ",")
PickerItems.Initialize
    For Each S() As String In data
        Dim d As Datum
        d.Initialize
        d.f = 1 / S(1)
        d.A = S(2)
        d.dx = S(3)
        d.dy = S(4)
        d.dz = S(5)
        DatumData.Put(S(0), d)
        pickerItems.Add(S(0))
    Next
Picker1.SetItems(0, pickerItems)  'Fill Picker

Sub Picker1_ItemSelected (Column As Int, Row As Int) 'Get Selected Item
    Dim datumName As String = Picker1.GetItems(Column).Get(Row)
    selectedDatum = DatumData.Get(datumName)
    AfterChange
End Sub