The following code fragments, with the exception of using a DataRow array
rather than the DataView (result is the same for both) is what I am using.
The btnParcelComplete event sets Current, Prior, and Remption needs status.
If there are no further needs, the entire taxid is flagged as "C" (lhdr is a
DataRow in the twsDS1.twsContractHdr table). The test DataSet initially has
three "I" rows and the count in NoIncompleteTaxIds is accurate. When the btn
is clicked and the conditions meat in MofifyNeeds to reset one of the "I"
rows to "C", the count in NoIncompleteTaxIds should be reduced by 1 (i.e.,
2). Instead, cnt is STILL showing as 3 when lhdr.Cells["NeedsStatus"].Value
= "C" is met. The foreach loop shows two "I" and one "C"... so count should
have been 2 because "C" does not meet the Select criteria.

Code fragments are as follows:

private void btnParcelComplete_Click(object sender, System.EventArgs e)
{
   [...]
   ModifyNeeds();
}

private void ModifyNeeds()
{
   [...]
   if (   txtSCurrNeeds.Text      != "Y" &&
           txtSPriorNeeds.Text     != "Y" &&
           txtMRedemNeeds.Text != "Y" )
   {
       lhdr.Cells["Redemption"].Value = "*";
       lhdr.Cells["NeedsStatus"].Value = "C";
   }
   NoIncompleteTaxIds();
}

private bool NoIncompleteTaxIds()
{
   string agency = r.AgencyID;

   DataRow[] tstRows = twsDS1.twsContractHdr.Select("AgencyID = '" + agency
+ "' AND NeedsStatus = 'I'");
   int cnt = tstRows.Length;

   foreach (DataRow tst in tstRows)
   {
       string taxid = tst["TaxId"].ToString();
       string status = tst["NeedsStatus"].ToString();
   }

   txtMIncompleteCnt.Text = cnt.ToString();

   if (cnt > 0)
       return false;
   else
       return true;
}