void SetAsDefaultButtonClick(object sender, EventArgs e)
{
if (defaultBindingIndex >= 0)
{
programListBox.Items[defaultBindingIndex] = new ListEntry(
((ListEntry)programListBox.Items[defaultBindingIndex]).desc,
false);
}
defaultBindingIndex = programListBox.SelectedIndex;
programListBox.Items[defaultBindingIndex] = new ListEntry(
((ListEntry)programListBox.Items[defaultBindingIndex]).desc,
true);
DisplayBindingService.SetDefaultCodon(fileExtension, SelectedBinding);
}