1,窗体启动时:
Control.HandleCreated Control.BindingContextChanged Form.Load Control.VisibleChanged Form.Activated Form.Shown
2,窗体关闭时: Form.Closing Form.FormClosing Form.Closed Form.FormClosed Form.Deactivate
3,控件焦点与验证事件:
Enter GotFocus Leave Validating Validated LostFocus
4,使用鼠标:
Enter GotFocus LostFocus Leave Validating Validated
