Hi,
Create a method that will return a Boolean value and name it as IsValid. The add the following codes in it.
retval = false
foreach(ListItem chk in CheckBoxList1.Items)
{
if(chk.Checked == false)
{
continue;
}
if(chk.Checked == true)
{
return true;
}
}
return retval;
Regards,
Eduard