private void UpdateFreight()
{
SODetails clsSODetails = new SODetails();
clsSODetails.SOID = Convert.ToInt64(lblSOID.Text);
clsSODetails.Freight = Convert.ToDecimal(txtSOFreight.Text);
SO clsSO = new SO();
clsSO.UpdateFreight(clsSODetails.SOID, clsSODetails.Freight);
clsSO.SynchronizeAmount(Convert.ToInt64(lblSOID.Text));
clsSODetails = clsSO.Details(Convert.ToInt64(lblSOID.Text));
clsSO.CommitAndDispose();
UpdateFooter(clsSODetails);
}