Assign value to the Listbox which is in dataset

string ReasonList = dsSalesReturnDetails.Tables[0].Rows[0]["Reason_For_Return"].ToString();
string[] selected = ReasonList.Split(',');
for (int i = 0; i < selected.Length; i++)
{
for (int x = 0; x< chkReason.Items.Count; x++)
{
if (chkReason.Items[x].Value == selected[i])
{
chkReason.Items[x].Selected = true;
break;
}
}
}