Option Explicit
Private Sub UserForm_Initialize()
Dim Plage As Range, Cell As Range
Dim X As Long
With Me.ListBox1
.ColumnCount = 2
.ColumnWidths = '50;90'
End With
With ThisWorkbook.Worksheets('Feuil1')
Set Plage = .Range(.Range('C2'), .Range('C65536').End(xlUp))
End With
For Each Cell In Plage
If Not Cell = Empty Then
With Me.ListBox1
.AddItem Cell.Offset(0, -1)
.Column(1, X) = Cell
X = X + 1
End With
End If
Next Cell
End Sub