PdfViewer Events

Represents the PDF Viewer, which displays PDF files in WinForms applications.

Name	Description
AnnotationDeleting	Fires before an annotation is deleted from a page.
AutoSizeChanged	Occurs when the AutoSize property changes. Inherited from UserControl.
AutoValidateChanged	Occurs when the AutoValidate property changes. Inherited from UserControl.
BackColorChanged	Occurs when the value of the BackColor property changes. Inherited from Control.
BackgroundImageChanged	Occurs when the value of the BackgroundImage property changes. Inherited from Control.
BackgroundImageLayoutChanged	Occurs when the BackgroundImageLayout property changes. Inherited from Control.
BindingContextChanged	Occurs when the value of the BindingContext property changes. Inherited from Control.
CausesValidationChanged	Occurs when the value of the CausesValidation property changes. Inherited from Control.
ChangeUICues	Occurs when the focus or keyboard user interface (UI) cues change. Inherited from Control.
Click	Occurs when the control is clicked. Inherited from Control.
ClientSizeChanged	Occurs when the value of the ClientSize property changes. Inherited from Control.
ContextMenuChanged	Occurs when the value of the ContextMenu property changes. Inherited from Control.
ContextMenuStripChanged	Occurs when the value of the ContextMenuStrip property changes. Inherited from Control.
ControlAdded	Occurs when a new control is added to the Control.ControlCollection. Inherited from Control.
ControlRemoved	Occurs when a control is removed from the Control.ControlCollection. Inherited from Control.
CurrentPageChanged	Occurs after the currently displayed page has been changed.
CursorChanged	Occurs when the value of the Cursor property changes. Inherited from Control.
Disposed	Occurs when the component is disposed by a call to the Dispose() method. Inherited from Component.
DockChanged	Occurs when the value of the Dock property changes. Inherited from Control.
DocumentChanged	Occurs when a PdfViewer control loads another PDF document.
DocumentClosing	Occurs when closing a PDF document.
DoubleClick	Occurs when the control is double-clicked. Inherited from Control.
DpiChangedAfterParent	Occurs when the DPI setting for a control is changed programmatically after the DPI of its parent control or form has changed. Inherited from Control.
DpiChangedBeforeParent	Occurs when the DPI setting for a control is changed programmatically before a DPI change event for its parent control or form has occurred. Inherited from Control.
DragDrop	Occurs when a drag-and-drop operation is completed. Inherited from Control.
DragEnter	Occurs when an object is dragged into the control’s bounds. Inherited from Control.
DragLeave	Occurs when an object is dragged out of the control’s bounds. Inherited from Control.
DragOver	Occurs when an object is dragged over the control’s bounds. Inherited from Control.
EnabledChanged	Occurs when the Enabled property value has changed. Inherited from Control.
Enter	Occurs when the control is entered. Inherited from Control.
FileAttachmentOpening	Occurs when an attachment is opening in the Attachments panel and allows you to manage the attachment opening behavior. For example, the attachment contents are not opened if e.Cancel is set to true. If you want to hide the Security Warning message box, set the PdfFileAttachmentOpeningEventArgs.Handled property to true.
FindDialogVisibilityChanged	Occurs when the visibility state of the Find dialog window has changed.
FontChanged	Occurs when the Font property value changes. Inherited from Control.
ForeColorChanged	Occurs when the ForeColor property value changes. Inherited from Control.
FormFieldGotFocus	Occurs when a form field receives input focus.
FormFieldLostFocus	Occurs when a form field loses input focus.
FormFieldValueChanged	Occurs after a form field value in the PDF document has been changed.
FormFieldValueChanging	Occurs when an end-user starts to edit a form field value.
GiveFeedback	Occurs during a drag operation. Inherited from Control.
GotFocus	Occurs when the control receives focus. Inherited from Control.
HandleCreated	Occurs when a handle is created for the control. Inherited from Control.
HandleDestroyed	Occurs when the control’s handle is in the process of being destroyed. Inherited from Control.
HelpRequested	Occurs when the user requests help for a control. Inherited from Control.
ImeModeChanged	Occurs when the ImeMode property has changed. Inherited from Control.
Invalidated	Occurs when a control’s display requires redrawing. Inherited from Control.
KeyDown	Occurs when a key is pressed while the control has focus. Inherited from Control.
KeyPress	Occurs when a character. space or backspace key is pressed while the control has focus. Inherited from Control.
KeyUp	Occurs when a key is released while the control has focus. Inherited from Control.
Layout	Occurs when a control should reposition its child controls. Inherited from Control.
Leave	Occurs when the input focus leaves the control. Inherited from Control.
Load	Occurs before the control becomes visible for the first time. Inherited from UserControl.
LocationChanged	Occurs when the Location property value has changed. Inherited from Control.
LostFocus	Occurs when the control loses focus. Inherited from Control.
MarginChanged	Occurs when the control’s margin changes. Inherited from Control.
MarkupAnnotationGotFocus	Occurs when a markup annotation receives input focus.
MarkupAnnotationLostFocus	Occurs when a markup annotation loses input focus.
MouseCaptureChanged	Occurs when the control loses mouse capture. Inherited from Control.
MouseClick	Occurs when the control is clicked by the mouse. Inherited from Control.
MouseDoubleClick	Occurs when the control is double clicked by the mouse. Inherited from Control.
MouseDown	Occurs when the mouse pointer is over the control and a mouse button is pressed. Inherited from Control.
MouseEnter	Occurs when the mouse pointer enters the control. Inherited from Control.
MouseHover	Occurs when the mouse pointer rests on the control. Inherited from Control.
MouseLeave	Occurs when the mouse pointer leaves the control. Inherited from Control.
MouseMove	Occurs when the mouse pointer is moved over the control. Inherited from Control.
MouseUp	Occurs when the mouse pointer is over the control and a mouse button is released. Inherited from Control.
MouseWheel	Occurs when the mouse wheel moves while the control has focus. Inherited from Control.
Move	Occurs when the control is moved. Inherited from Control.
NavigationPaneSelectedPageChanged	Fires in response to changing the thumbnails, attachments, or bookmarks page on the navigation pane.
NavigationPaneVisibilityChanged	Occurs after the visibility of a navigation pane has been changed.
PaddingChanged	Occurs when the control’s padding changes. Inherited from Control.
PageSetupDialogShowing	Occurs when displaying the Print dialog in the PDF Viewer.
Paint	Occurs when the control is redrawn. Inherited from Control.
ParentChanged	Occurs when the Parent property value changes. Inherited from Control.
PasswordRequested	Occurs when requesting a security password to open a protected PDF file.
PopupMenuShowing	Occurs after the popup menu of a PDF Viewer has been invoked.
PreviewKeyDown	Occurs before the KeyDown event when a key is pressed while focus is on this control. Inherited from Control.
PrintPage	Occurs when the document page is printed.
QueryAccessibilityHelp	Occurs when AccessibleObject is providing help to accessibility applications. Inherited from Control.
QueryContinueDrag	Occurs during a drag-and-drop operation and enables the drag source to determine whether the drag-and-drop operation should be canceled. Inherited from Control.
QueryPageSettings	Occurs immediately before the PdfViewer.PrintPage event.
ReferencedDocumentOpening	Occurs when opening an embedded or external document by clicking its corresponding link in a PDF document.
RegionChanged	Occurs when the value of the Region property changes. Inherited from Control.
Resize	Occurs when the control is resized. Inherited from Control.
RightToLeftChanged	Occurs when the RightToLeft property value changes. Inherited from Control.
Scroll	Occurs when the user or code scrolls through the client area. Inherited from ScrollableControl.
ScrollPositionChanged	Occurs after changing the current scroll bar position in a PdfViewer.
SelectionContinued	Occurs after the selection of the PDF content has been continued.
SelectionEnded	Occurs after the selection of the PDF content has finished.
SelectionStarted	Occurs after the selection of the PDF content has started.
SizeChanged	Occurs when the Size property value changes. Inherited from Control.
StyleChanged	Occurs when the control style changes. Inherited from Control.
SystemColorsChanged	Occurs when the system colors change. Inherited from Control.
TabIndexChanged	Occurs when the TabIndex property value changes. Inherited from Control.
TabStopChanged	Occurs when the TabStop property value changes. Inherited from Control.
TextChanged	Raises the TextChanged event. Inherited from UserControl.
TextMarkupAnnotationChanged	Fires immediately after an end-user closes the Annotation Properties dialog if a text markup annotation has been changed.
TextMarkupAnnotationCreated	Occurs after a text markup annotation (highlight, strikethrough or underline) is created.
TextMarkupAnnotationCreating	Occurs when a text markup annotation (highlight, strikethrough or underline) is being created.
UpdateUI	Raised when changes occur which may affect the control’s UI.
UriOpening	Occurs after clicking a hyperlink addressing an external URI (universal resource identifier).
Validated	Occurs when the control is finished validating. Inherited from Control.
Validating	Occurs when the control is validating. Inherited from Control.
VisibleChanged	Occurs when the Visible property value changes. Inherited from Control.
ZoomChanged	Occurs after the current zoom factor has been changed.