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How to tell if Items in listbox exist

Posted on 2004-03-28
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Last Modified: 2010-04-05
Hey,

How can I tell if there are items in a listbox. So when I click on a button it will say "items exist" if there are items in the listbox and if there are no items in the listbox it will say "no items in the listbox".

Cheers,

Computer Programer
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Question by:computerprogramer
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2 Comments
 
LVL 14

Expert Comment

by:DragonSlayer
ID: 10697740
let's say you typed the string to search for in an edit box called Edit1

to test it, just say:

if ListBox1.Items.IndexOf(Edit1.Text) <> -1 then
  ShowMessage('Item Exists!')
else ShowMessage('No such item in the listbox!');
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LVL 11

Accepted Solution

by:
shaneholmes earned 75 total points
ID: 10698424
You can test the Items count property to see if it is zero or not (zero being empty)

if ListBox1.Items.Count > 0 then
 ShowMessage('Items = ' + IntToStr(ListBox1.Items.Count)) //not empty
else
 ShowMessage('Items = 0'); //empty

Shane
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