private void UpdateFreight()
{
POReturnDetails clsPOReturnDetails = new POReturnDetails();
clsPOReturnDetails.DebitMemoID = Convert.ToInt64(lblDebitMemoID.Text);
clsPOReturnDetails.Freight = Convert.ToDecimal(txtPODebitMemoFreight.Text);
POReturns clsPOReturns = new POReturns();
clsPOReturns.UpdateFreight(clsPOReturnDetails.DebitMemoID, clsPOReturnDetails.Freight);
clsPOReturns.SynchronizeAmount(Convert.ToInt64(lblDebitMemoID.Text));
clsPOReturnDetails = clsPOReturns.Details(Convert.ToInt64(lblDebitMemoID.Text));
clsPOReturns.CommitAndDispose();
UpdateFooter(clsPOReturnDetails);
}