Add Form Field Reader Event to PDF in C# (.NET Core)

Adding Form Field Reader Event to PDF using DynamicPDF Generator is simple and easy.

How to add Form Field Reader Event to PDF in C#

Below are the steps and sample code to add a Form Field Reader Event to PDF document using the Generator product. The following events can be triggered for each form field.

MouseUp- This event is fired when the mouse button is released after a click. MouseDown - This event is fired when the mouse button is clicked and not released. MouseEnter - This event is fired when the mouse pointer enters the field. MouseExit - This event is fired when the pointer exits the form field. OnBlur - This event is fired when the form field loses focus. OnFocus - This event is fired when the form field receives focus, either through a mouse action or by tabbing.

The example below demonstrates how to trigger a JavaScript alert window when a text field receives focus.

Steps for Adding Form Field Reader Event to a PDF Document

  1. Create a Document object.
  2. Create a Page object and add it to the Document.
  3. Create a TextField object.
  4. Create a JavaScriptAction object and provide the script to be executed.
  5. Assign the action to the TextField.
  6. Save the PDF document.

Sample Code - C#

Document document = new Document();
Page page = new Page();
document.Pages.Add( page );

TextField textField = new TextField("Text1", 0, 0, 100, 15); 
JavaScriptAction action = new JavaScriptAction("app.alert(\"Welcome !!\")");
textField.ReaderEvents.OnFocus = action;   

document.Draw( "output.pdf" );

Over 75 Page Elements

DynamicPDF Generator contains over 75 page elements so you can add rich content to the PDFs you create:

  • Images
  • Text Objects (TextArea and Label)
  • HTML
  • Barcodes (47 types)
  • Form Fields
  • Charts

Getting Started

NuGet Package

DynamicPDF Generator is available on NuGet and is part of the ceTe.DynamicPDF.CoreSuite.NET package. The Core Suite package includes Generator, Merger and ReportWriter.

Nuget Logo
NuGet Package ID: ceTe.DynamicPDF.CoreSuite.NET

Example Project

An example project showing this functionality can be cloned or viewed from GitHub:

GitHub Logo
Clone or View Example Project on GitHub

DynamicPDF Generator Information

More information can be found here:

Available in other platforms

DynamicPDF Generator is available for the following platforms. Refer to the respective product pages for more details.

Why Choose DynamicPDF?

  • Transparent Pricing
  • Lots of Features
  • Easy to Use
  • Great Support
  • Efficient Performance
  • Product Maturity (Over 18 Years)
  • Free Evaluation
  • .NET Core Support (Most Products)
  • Flexible Licensing

We’re Not The Only Ones That Think We’re Great!