Occurs when the form is activated in code or by the user.

Occurs when the value of the BackColor property changes.

Occurs when the value of the BackgroundImage property changes.

Occurs when the BackgroundImageLayout property changes.

Occurs when the value of the BindingContext property changes.

Occurs when the value of the CausesValidation property changes.

Occurs when the focus or keyboard user interface (UI) cues change.

Occurs when the control is clicked.

Occurs when the value of the ClientSize property changes.

Occurs when the value of the ContextMenu property changes.

Occurs when the value of the ContextMenuStrip property changes.

Occurs when a new control is added to the Control..::..ControlCollection.

Occurs when a control is removed from the Control..::..ControlCollection.

Occurs when the value of the Cursor property changes.

Occurs when the form loses focus and is no longer the active form.

Occurs when the value of the Dock property changes.

Occurs when the control is double-clicked.

Occurs when a drag-and-drop operation is completed.

Occurs when an object is dragged into the control's bounds.

Occurs when an object is dragged out of the control's bounds.

Occurs when an object is dragged over the control's bounds.

Occurs when the Enabled property value has changed.

Occurs when the control is entered.

Occurs when the Font property value changes.

Occurs when the ForeColor property value changes.

Occurs after the form is closed.

Occurs before the form is closed.

Occurs during a drag operation.

Occurs when the control receives focus.

Occurs when a handle is created for the control.

Occurs when the control's handle is in the process of being destroyed.

Occurs when the Help button is clicked.

Occurs when the user requests help for a control.

Occurs when the ImeMode property has changed.

Occurs after the input language of the form has changed.

Occurs when the user attempts to change the input language for the form.

Occurs when a control's display requires redrawing.

Occurs when a key is pressed while the control has focus.

Occurs when a key is pressed while the control has focus.

Occurs when a key is released while the control has focus.

Occurs when a control should reposition its child controls.

Occurs when the input focus leaves the control.

Occurs before a form is displayed for the first time.

Occurs when the Location property value has changed.

Occurs when the control loses focus.

Occurs when the value of the MaximizedBounds property has changed.

Occurs when the value of the MaximumSize property has changed.

Occurs when a multiple-document interface (MDI) child form is activated or closed within an MDI application.

Occurs when the menu of a form loses focus.

Occurs when the menu of a form receives focus.

Occurs when the value of the MinimumSize property has changed.

Occurs when the control loses or gains mouse capture.

Occurs when the control is clicked by the mouse.

Occurs when the control is double clicked by the mouse.

Occurs when the mouse pointer is over the control and a mouse button is pressed.

Occurs when the mouse pointer enters the control.

Occurs when the mouse pointer rests on the control.

Occurs when the mouse pointer leaves the control.

Occurs when the mouse pointer is moved over the control.

Occurs when the mouse pointer is over the control and a mouse button is released.

Occurs when the mouse wheel moves while the control has focus.

Occurs when the control is moved.

Occurs when the control's padding changes.

Occurs when the control is redrawn.

Occurs when the Parent property value changes.

Occurs before the KeyDown event when a key is pressed while focus is on this control.

Occurs when AccessibleObject is providing help to accessibility applications.

Occurs during a drag-and-drop operation and enables the drag source to determine whether the drag-and-drop operation should be canceled.

Occurs when the value of the Region property changes.

Occurs when the control is resized.

Occurs when a form enters resizing mode.

Occurs when a form exits resizing mode.

Occurs when the RightToLeft property value changes.

Occurs after the value of the RightToLeftLayout property changes.

Occurs when the user or code scrolls through the client area.

Occurs whenever the form is first displayed.

Occurs when the Size property value changes.

Occurs when the control style changes.

Occurs when the system colors change.

Occurs when the TabIndex property value changes.

Occurs when the Text property value changes.

Occurs when the control is finished validating.

Occurs when the control is validating.

Occurs when the Visible property value changes.