want asp dropdownlist selection to make panel visible

Question

I have an asp dropdownlist that I would like to make a panel visible if the selection contains a certain word- how would this be possible?

Answer 1

lets say you have dictionary like this

List<string> words = new List<string>();
words.Add("foo");

then onchange event of drop down list

string selectedText = ddlPanel.SelectedText;
foreach(var w in words)
{
 if ( w.Contains(selectedText)
  {
     pnl.Visible = true;
  }
}