AxZKFPEngX axZKFPEngX1 = new AxZKFPEngX();
private void OnFingerLeaving()
        {
            axZKFPEngX1.CreateControl();
if (axZKFPEngX1.InitEngine() == 0)
            {
                axZKFPEngX1.FPEngineVersion = "9";//"10"
                fpcHandle = axZKFPEngX1.CreateFPCacheDBEx();
this.axZKFPEngX1.OnFingerLeaving += new System.EventHandler(this.axZKFPEngX1_OnFingerLeaving);
            }
else
            {
                axZKFPEngX1.EndEngine();
                MessageBox.Show("Initial Failed!", "Error");
            }
        }
private void axZKFPEngX1_OnFingerLeaving(object sender, EventArgs e)
        {
            MessageBox.Show("OnFingerLeaving");
        }