You may want to share what that listbox is.
Is it on a userform?
Is it a listbox from the Forms toolbar placed on a worksheet?
Is it a listbox from the control toolbox toolbar placed on a worksheet?
I put a listbox from the control toolbox toolbar on a worksheet and used this
code in the worksheet_activate event -- not sure where you would want it to go.
Option Explicit
Private Sub Worksheet_Activate()
Dim myCell As Range
Dim myRng As Range
With Me
Set myRng = .Range("a1", .Cells(.Rows.Count, "A").End(xlUp))
End With
With Me.ListBox1
For Each myCell In myRng.Cells
.AddItem Format(myCell.Value, "00.00")
Next myCell
End With
End Sub
The important thing was the .additem stuff and the format statement.