filtering records from 1st combobox to 2nd combobox and 2nd

hi mr.jitendra kumar,
 i have trying bind 1st combobox to 2nd but not bind 2nd combobox to first combobox

//customername combobox bind code:
 protected void bindcust()
  {
  var a = (from p in ap.Addaccounts select new { fullname = p.FirstNm + " " + p.MiddelNm + " " + p.LastNm, p.CustID }).ToList();
  comCustName.DataSource = a;
  comCustName.DisplayMember = "fullname";
  comCustName.ValueMember = "CustId";
  }
//acccount combobox bind code:-
  protected void bindacno()
  {
  var acno = (from n in ap.Addaccounts select new { n.CustID, n.AcNo }).ToList();
  cmbacno.DataSource = acno;
  cmbacno.DisplayMember = "AcNo";
  cmbacno.ValueMember = "CustId";
  }


//comboboxcustomername selectedindexchanged
{
  var custid = (from p in ap.Addaccounts where p.CustID == Convert.ToInt32(comCustName.SelectedValue) select new { p.AcNo }).ToList();
  foreach (var i in custid)
  {
  comAcNo.SelectedIndex = -1;
  string accountno = (i.AcNo);
  comAcNo.Text = accountno;
  }
}
//combo box accountno selected index changed
{
 var name = (from v in ap.Addaccounts where (v.AcNo) == (comAcNo.SelectedText) select new { fullname = v.FirstNm + " " + v.MiddelNm + "" + v.LastNm, v.CustID }).ToList();
  foreach (var j in name)
  {
  //custname.SelectedItem = -1;
  string fname = j.fullname;
  comCustName.Text = fname;
  }
}

Hi,


Kindly share your code for more explain.