title: Autocomplete combobox - item on the list?
body: <p>i'm using combobox with autocomplete option, where autocompletesource is ListItems and AutoCompleteMode is SuggestAppend.</p>
  
  <p>I'm trying to load from combobox item called: 51420283V. When I hit enter app loads data from 51420283V. When i trying to load item, which is not in my combobox i'm getting error. So i'd like to check first if the number/string text is on my combolist.
  Example:  1123232 is not on my list. I accidentaly hit enter, and application is trying to load items from 1123232.. and error ;)</p>
  
  <p>I'm trying something like that, but with many errors:</p>
  
  <pre><code>        if (e.KeyCode == Keys.Enter)
            {
                  if (ReferenceCombo.Contains(ReferenceCombo.SelectedText))
                  {
  
                  }
                  else MessageBox.Show("Item not in combolist");
               }
  </code></pre>