private CurrencyManager m_crm;
private void Form1_Load(object sender, System.EventArgs e)
{
	m_crm =  (CurrencyManager)this.BindingContext[this.dataGrid1.DataSource, this.dataGrid1.DataMember];
	m_crm.PositionChanged +=  new EventHandler(MyPositionChanged);
}
private void MyPositionChanged(object sender, System.EventArgs e)
{
// обрабатываем positionchanged
}

 uid  =  S a

 uid  =  S a

 uid  =  S a

 uid  =  S a