Question

I know I can loop through a checkboxlist.Items and see if none of them is selected, but is there a better way to find out if no items have been selected, in the code behind?

Answer 1

You have to check the SelectedIndex. If it equals -1, its means nothing is selected.

 CheckBoxList list = new CheckBoxList();
 if (list.SelectedIndex == -1)
 {
      //Nothing is selected
 }