The Form.ResizeEnd event is raised when the user finishes resizing a form, typically by dragging one of the borders or the sizing grip located on the lower-right corner of the form, and then releasing it. For more information about the resizing operation, see the Form.ResizeBegin event.
The Form.ResizeEnd event is also generated after the user moves a form, typically by clicking and dragging on the caption bar. This event is not generated by programmatic manipulation of the form, for example by changing the Form.Size or Control.Location properties.
For more information about handling events, see Consuming Events.