Event Triggers

The Event Triggers dialog box allows you to select the event you want to raise when an action is performed on a control in a form.

The Event Triggers dialog box displays the applicable events for each of the configuration types you have defined. For example, if you configured parameters and server methods for a form, the events applicable to those types are displayed and grouped according to type.

The following table describes the events that can be configured.

EventOccurs when...Applies to...
Checkeda control is checked
  • Check Box
  • Radio Button
  • Toggle Button
  • Menu Item
Clicka control is clicked
  • Button
  • Check Box
  • Radio Button
  • Repeat Button
  • Toggle Button
  • Menu Item
  • Switch Language Button
Collapsedthe content window of a control closes and only the header is visible
  • Expander
  • Tree View Item
Date Time Changeda date time is selectedDate/Time Picker
Drag Completedthe Thumb control loses mouse focusGrid Splitter
Drag Deltathe mouse changes position when a Thumb control has logical focus and mouse captureGrid Splitter
Drag Starteda Thumb control receives logical focus and mouse captureGrid Splitter
Drop Down Closedthe drop-down list of the combo box closesCombo Box
Drop Down Openedthe drop-down list of the combo box opensCombo Box
Duration Changeda duration is selectedDuration Picker
ExecutedSuccessfullythe method executed successfully
  • Server methods
  • Client methods
ExecutedWithErrorthe method fails
  • Server methods
  • Client methods
Expandedthe content window of a control opens to display both its header and content
  • Expander
  • Tree View Item
Got Focusthe control gets focusAll controls
Indeterminatethe state of a control is neither on nor off
  • Check Box
  • Radio Button
  • Toggle Button
Key Downa key is pressed while focus is on the controlAll controls
Layout Updatedthe layout of the various visual elements associated with the current Dispatcher changesAll controls
Loadedthe control is laid out, rendered, and ready for interactionAll controls
Lost Focusthe control loses focusAll controls
Mouse Double Clicka mouse button is clicked two or more timesAll controls
Mouse Downany mouse button is pressed while the pointer is over the controlAll controls
Mouse Enterthe mouse pointer enters the bounds of the controlAll controls
Mouse Leavethe mouse pointer leaves the bounds of the controlAll controls
Mouse Left Button Downthe left mouse button is pressed while the mouse pointer is over the controlAll controls
Mouse Movethe mouse pointer moves while over the controlAll controls
Mouse Right Button Downthe right mouse button is pressed while the mouse pointer is over the controlAll controls
Page View Changedthe collection of DocumentPageView items associated with this viewer (represented by the PageViews property) changes Document Viewer
Password Changedthe value of the Password property changesPassword Box
Scrollthe scroll bar movesScroll Bar
Scroll Changedchanges are detected to the scroll position, extent, or viewport sizeScroll Viewer
Selectedthe IsSelected property of changes from false to True
  • Combo Box Item
  • List Box Item
  • List View Item
  • Tree View Item
Selection Changedthe text selection has changed
  • Rich Text Box
  • Text Box
  • Validating Text Box
  • Combo Box
  • List Box
  • List View
  • Tab Control
  • Universal Browser
Selection Item Changedthe selected item has changedTree View
Submenu Openedthe state of the IsSubmenuOpen property changes to TrueMenu Item
Submenu Closedthe state of the IsSubmenuOpen property changes to falseMenu Item
Text Changedcontent changes in the text element
  • Masked Text Box
  • Rich Text Box
  • Text Box
  • Validating Text Box
Uncheckeda control is unchecked
  • Check Box
  • Radio Button
  • Toggle Button
  • Menu Item
Unloadedthe element is removed from within an element tree of loaded controlsAll controls
Unselectedthe IsSelected property changes from true to False
  • Combo Box Item
  • List Box Item
  • List View Item
  • Tree View Item
Value Changedthe value changes
  • Progress Bar
  • Scroll Bar
  • Slider
  • Input Parameter
  • Output Parameter
  • Data Item