Action Collections

Updated on Nov 3, 2025

Depending on the document element associated with the actions, there are different collection types that store the actions providing the appropriate public API.

ActionCollection

Represents a basic collection of Action objects. The collection allows manipulating the items by the following public methods:

Method Name	Description
Add	Adds the specified Action to the end of the collection.
AddRange	Adds the elements of the specified collection to the end of the current collection.
Insert	Inserts an Action into the collection at the specified index.
Clear	Removes all elements from the collection.
Remove	Removes the first occurrence of a specific Action from the collection.
RemoveRange	Removes a range of elements from the collection.
RemoveAt	Removes the element at the specified index of the collection.
Find	Finds the first Action that matches the conditions defined by the specified predicate.
FindAll	Finds all Action objects that match the conditions defined by the specified predicate.
Reverse	Reverses the order of the elements in the collection.
GetRange	Returns a range of elements from the collection.

AnnotationActionCollection

An abstract class that represents a collection of Action objects. It is the base class for the WidgetActionCollection exposing the following API:

Property Name	Description
MouseEnter	Gets the collection of actions triggered when the mouse enters the annotation area.
MouseExit	Gets the collection of actions triggered when the mouse exits the annotation area.
MouseDown	Gets the collection of actions triggered when the mouse button is pressed within the annotation area.
MouseUp	Gets the collection of actions triggered when the mouse button is released within the annotation area.

WidgetActionCollection

Represents a collection of Action objects, specifically for widget annotations.

Property Name	Description
OnFocus	Gets or sets the collection of actions triggered when the widget gains the input focus.
OnBlur	Gets or sets the collection of actions triggered when the widget loses the input focus.
OnPageOpen	Gets or sets the collection of actions triggered when the page containing the widget is opened.
OnPageClose	Gets or sets the collection of actions triggered when the page containing the widget is closed.
OnPageVisible	Gets or sets the collection of actions triggered when the page containing the widget becomes visible.
OnPageInvisible	Gets or sets the collection of actions triggered when the page containing the widget becomes invisible.

FormFieldActionCollection

Represents a collection of JavaScriptAction objects associated with a FormField.

Property Name	Description
Keystroke	Gets or sets the JavaScript action to be performed when the user types a keystroke into a text field or combo box or modifies the selection in a scrollable list box.
Format	Gets or sets the JavaScript action to be performed before the field is formatted to display its current value.
Validate	Gets or sets the JavaScript action to be performed when the field’s value is changed.
Calculate	Gets or sets the JavaScript action to be performed to recalculate the value of this field when that of another field changes.

It is suitable for cases when a certain calculation needs to be performed after entering user values. A sample approach is demonstrated in the Multiplying TextBoxField Values with JavaScript Actions article.

A common case is restricting the user's input, e.g. when entering a date in a specific format:

c#

RadFixedDocument document = new RadFixedDocument();
document.Pages.AddPage();

TextBoxField textField = new TextBoxField("SampleTextBox");
textField.Actions.Format =
    new Telerik.Windows.Documents.Fixed.Model.Actions.JavaScriptAction("AFDate_FormatEx(\"m/d/yy\");");
textField.Actions.Keystroke =
    new Telerik.Windows.Documents.Fixed.Model.Actions.JavaScriptAction("AFDate_KeystrokeEx(\"m/d/yy\");");

VariableContentWidget widget = textField.Widgets.AddWidget();
widget.Rect = new Rect(0, 0,250, 50);

document.AcroForm.FormFields.Add(textField);
document.Pages[0].Annotations.Add(widget);

The achieved result is illustrated below:

PageActionCollection

Represents a collection of Action objects associated with a RadFixedPage.

Property Name	Description
OnPageOpen	Gets or sets the collection of actions triggered when the page is opened.
OnPageClose	Gets or sets the collection of actions triggered when the page is closed.

The following example shows how to utilize the JavaScript Actions functionality showing an alert when the second page in a document is closed:

c#

RadFixedDocument document = new RadFixedDocument();
document.Pages.AddPage(); //first page
RadFixedPage page = document.Pages.AddPage(); //second page
JavaScriptAction action = new JavaScriptAction("app.alert('JS Action when second page is closed!');");
page.Actions.OnPageClose.Add(action);
document.Pages.AddPage(); //third page

DocumentActionCollection

Represents a collection of JavaScriptAction objects associated with RadFixedDocument.

Property Name	Description
DocumentWillClose	Gets or sets the JavaScript action that will be triggered before the document is closed.
DocumentWillSave	Gets or sets the JavaScript action that will be triggered before the document is saved.
DocumentDidSave	Gets or sets the JavaScript action that will be triggered after the document is saved.
DocumentWillPrint	Gets or sets the JavaScript action that will be triggered before the document is printed.
DocumentDidPrint	Gets or sets the JavaScript action that will be triggered after the document is printed.

See Also

• FormField
• FormFieldCollection class
• Widgets
• Multiplying TextBoxField Values with JavaScript Actions and RadPdfProcessing