Private Sub UserForm_Initialize()
Set F = Sheets("Costumes")
Set Maliste = CreateObject("Scripting.Dictionary")
For Each C In F.Range("B2:B" & F.Range("B65536").End(xlUp).Row)
Maliste(C.Offset(, 0).Value) = ""
Next C
CbGroupeAjout.List = Maliste.Keys
CbGroupeAjout.AddItem "Tous", 0
End Sub