Hello Everyone,

I am trying to create a dialog box that has two combo boxes and the list items 
of the second combo box depends on the value of the first one. In other words, 
if the user changes the selected item in the first combo box, the list items in 
the second combo box are updated accordingly. Below is the code of the first 
combo box and the custom action RefreshModelList is intended to update the 
second combo box. At runtime, the custom action seems to executed multiple 
times. Is there any way to execute the custom action only once and after the 
first combo box selection? If this is not a correct way to implement this, 
could you please point me in the right direction? Your help will be greatly 
appreciated.

Thanks a lot,
Miaohsi

<Control Id="Device_Maker" Type="ComboBox" ComboList="yes" X="110" Y="130" 
Width="100" Height="120" Property="DEVICE_MAKER" TabSkip="no" >
   <ComboBox Property="DEVICE_MAKER">
      <ListItem Text="Intermec" Value="Intermec" />
      <ListItem Text="Motorola" Value="Motorola" />
      <ListItem Text="Dell" Value="Dell" />
   </ComboBox>
   <Publish Event="DoAction" Value="RefreshModelList" />
</Control>



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