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TListBox contains no duplicates

How can I ensure that when I add an Item to a TListBox and/or a TComboBox (e.g. ListBox1.Items.Add('add this')) that the new string is not already in the list?  I am trying to keep duplicates OUT of these lists/components.
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Softtech
Asked:
Softtech
1 Solution
 
BlackManCommented:
You can do something like this

If ListBox1.Items.IndexOf(MyStr) = -1 Then // MyStr not found
  ListBox1.Items.Add(MyStr);

The same goes for ComboBox..
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