check box list values

This code is to get the selected values from a check box list, multi selected drop

drown , list box. 

for (int i = 0; i < interestedIN.Items.Count; i++)
{
   if (interestedIN.Items[i].Selected)
   {
       values += interestedIN.Items[i].Value + ",";
   }
}

values = values.TrimEnd(',');

This code will explain how to bind the selected values to a check box list,list box.

 string[] strskill = skills.Split(',');

                    foreach (ListItem li in skills1.Items)

                    {

                        if (strskill.Contains(li.Value))

                            li.Selected = true;

                        else

                            li.Selected = false;

                    }