GUICtrlSetData not updating properly

[Swimming_Bird]

I define the objects in the control like this:

#include <GUIConstants.au3>
Global $programnames
Func _getnames ()
    Local $configini = IniReadSectionNames ( 'config.ini' )
    $programnames = $configini[1]
    For $n=2 To $configini[0]
        $programnames = $programnames & '|' & $configini[$n]
    Next
EndFunc
_getnames ()

This is the how i'm using my combobox:

Opt ( 'GUICoordMode' , 1 )
$refresh2 = GUICtrlCreateButton ( 'Refresh' ,350 , 52 )
GUICtrlCreateLabel ( 'Program Name' , 7 , 60 , 80 , 17 )
Opt ( 'GUICoordMode' , 2 )
$combo2 = GUICtrlCreateCombo ( '' , -1 , 1 , 390 )
GUICtrlSetData ( -1 , $programnames )
GUICtrlCreateButton ( 'Delete This Program' , -1 , 8 , 390 , 20)

And this is how i call for it to reset:

While 1
    $msg = GUIGetMsg()
    Select
        Case $msg = $GUI_EVENT_CLOSE
            Exit
        Case $msg = $refresh Or $msg = $refresh2
            _getnames ()
            GUICtrlSetData ( $combo1 , $programnames )
            GUICtrlSetData ( $combo2 , $programnames )
    EndSelect
Wend

The problem is that every time i reset it just adds whatever it reads to the end of the combobox instead of completely refreshing it.

Any help is appreciated.

Thanks

[SmOke_N]

I define the objects in the control like this:

#include <GUIConstants.au3>
Global $programnames
Func _getnames ()
    Local $configini = IniReadSectionNames ( 'config.ini' )
    $programnames = $configini[1]
    For $n=2 To $configini[0]
        $programnames = $programnames & '|' & $configini[$n]
    Next
EndFunc
_getnames ()

This is the how i'm using my combobox:

Opt ( 'GUICoordMode' , 1 )
$refresh2 = GUICtrlCreateButton ( 'Refresh' ,350 , 52 )
GUICtrlCreateLabel ( 'Program Name' , 7 , 60 , 80 , 17 )
Opt ( 'GUICoordMode' , 2 )
$combo2 = GUICtrlCreateCombo ( '' , -1 , 1 , 390 )
GUICtrlSetData ( -1 , $programnames )
GUICtrlCreateButton ( 'Delete This Program' , -1 , 8 , 390 , 20)

And this is how i call for it to reset:

While 1
    $msg = GUIGetMsg()
    Select
        Case $msg = $GUI_EVENT_CLOSE
            Exit
        Case $msg = $refresh Or $msg = $refresh2
            _getnames ()
            GUICtrlSetData ( $combo1 , $programnames )
            GUICtrlSetData ( $combo2 , $programnames )
    EndSelect
Wend

The problem is that every time i reset it just adds whatever it reads to the end of the combobox instead of completely refreshing it.

Any help is appreciated.

Thanks

While 1
    $msg = GUIGetMsg()
    Select
        Case $msg = $GUI_EVENT_CLOSE
            Exit
        Case $msg = $refresh Or $msg = $refresh2
            GUICtrlSetData ( $combo1 , '' )
            GUICtrlSetData ( $combo2 , '' )
            _getnames ()
            GUICtrlSetData ( $combo1 , $programnames )
            GUICtrlSetData ( $combo2 , $programnames )
    EndSelect
Wend

[Jos]

While 1
    $msg = GUIGetMsg()
    Select
        Case $msg = $GUI_EVENT_CLOSE
            Exit
        Case $msg = $refresh Or $msg = $refresh2
             _getnames ()
            GUICtrlSetData ( $combo1 , "|" & $programnames )
            GUICtrlSetData ( $combo2 , "|" & $programnames )
    EndSelect
Wend