Hi ,
I have an issue with userform and validation of data (not on an excel sheet
here)
On the userform, Userform1, I have:
- a listbox called lbx
- a textbox called txt
- a command button called cmd
I fill the listbox during _Initialize and check the data in
txt_BeforeUpdate(Cancel) and cancels the update if not valid data.
Now, if the data is not valid, i warn the user with a message and i'd like
to give him a chance to change the entered data.
When running, say row 1 of listbox is selected. If you enter wrong data and
click another item in the listbox, row2, the message is displayed, but the
listbox updates to the new selection preventing the user to re-entrer the
data for his previous selection (row1). I have posted my code below.

I have tried the txt_Exit event too, but to no avail.
My real case scenario consists in many dataentry control on the side of the
listbox, so i cannot let the user loose all the data he has just entered.

Any idea would be greatly appreciated.

Thanks,
Sebastien

Here is the code
'-------------------------------------------------------------------------------
Option Explicit

Private StoredValue() As Double

Private CodeMode As Boolean 'to cancel events when they are
' triggered from my code and not
' from the user

'Filling the listbox first
Private Sub UserForm_Initialize()
Dim i As Long, ttl As Long

CodeMode = True 'prevent events

With lbx
.AddItem "aaa"
.AddItem "bbb"
End With

ttl = lbx.ListCount
ReDim StoredValue(0 To ttl - 1)
For i = 0 To ttl - 1: StoredValue(i) = i: Next

CodeMode = False
End Sub

'When listbox is clicked, show the corresponding
' value in the textbox txt
Private Sub lbx_Click()
'Cancel event if CodeMode
If CodeMode Then Exit Sub

txt = StoredValue(lbx.ListIndex)

End Sub

'Now the user can edit the textbox
'Validation: check data when the usere leaves the textbox
' it has to be a number else prevent the update
Private Sub txt_BeforeUpdate(ByVal Cancel As MSForms.ReturnBoolean)
Dim d As Double

CodeMode = True 'cancel events

'Validation
On Error Resume Next
d = CDbl(txt)
If Err < 0 Then
MsgBox "you must enter a number"
Cancel = True 'Cancel the update of the textbox
Else
StoredValue(lbx.ListIndex) = CDbl(txt)
End If

CodeMode = False
End Sub
'----------------------------------------------------------------