Retrieve Form Field Locations

How to Retrieve Form Fields

The following steps and C# sample code illustrate retrieving form field locations in a PDF using DynamicPDF Core Suite for .NET.

Steps for Retrieving Form Field Location in PDF

1. Create a PdfDocument object with the desired PDF.
2. Create a MergeDocument object with the desired PDF.
3. Create a Page and add it to the MergeDocument instance.
4. Get the desired form field's dimensions and use as desired.
5. Add the MergeDocument object's Draw method to draw and save the PDF document.

Sample Code - C#

PdfDocument pdfDocument = new PdfDocument("form-example.pdf");
MergeDocument document = new MergeDocument("form-example.pdf");
Page page = document.Pages[0];
float x = pdfDocument.Form.Fields["check_box_nm"].GetX(page);
float y = pdfDocument.Form.Fields["check_box_nm"].GetY(page);
float height = pdfDocument.Form.Fields["check_box_nm"].Height;
float width = pdfDocument.Form.Fields["check_box_nm"].Width;
string txt = "(" + x + ", " + y + ", " + width + ", " + height + ")";
Label label = new Label(txt, x + width + 10, y, 100, 20);
page.Elements.Add(label);
document.Draw("Output.pdf");

GitHub Project

An example project is available on GitHub (examples.dynamicpdf-core-suite-dotnet-core). Examples are provided in C# and VB.NET. Clone or view the example project at GitHub. This specific example discussed on this page are all contained in following classes on GitHub

• C# - RetrievingFormFieldsExample.cs
• VB.NET - RetrievingFormFieldsExample.vb

Getting Started

Get started easily by installing DynamicPDF Core Suite for .NET through NuGet or manually. Then, refer to the documentation for more information on using and purchasing the product.

NuGet Package

The easiest way to install DynamicPDF Core Suite is by obtaining the NuGet package using Visual Studio's Package Manager. You can also obtain the NuGet package by downloading it directly. Refer to the installation documentation for more information.

DynamicPDF Core Suite Information

DynamicPDF Core Suite for .NET combines creating, merging, and visual report creation into one powerful product for creating PDF documents. It is ideal for anyone who needs to generate PDF documents or reports or work with existing PDFs in their applications. With a free Evaluation Edition to try and with flexible and royalty-free licensing options, why not start using DynamicPDF Core Suite for .NET today!

• DynamicPDF Core Suite for .NET Product Page
• DynamicPDF Core Suite for .NET Documentation

More Information on Form Field Retrieval

• Refer to the Retrieving Form Field Locations documentation topic, or
• Chapter 24, Modifying Forms, in the book DynamicPDF Core Suite for .NET by Example available on GitHub.

Available on Other Platforms

DynamicPDF Core Suite is also available for the Java and COM/ActiveX platforms. Refer to the respective product pages for more details.

• DynamicPDF Generator
  • Java - DynamicPDF Generator for Java
  • COM/ActiveX - DynamicPDF Generator for COM/ActiveX
• DynamicPDF Merger
  • Java - DynamicPDF Merger for Java
  • COM/ActiveX - DynamicPDF Merger for COM/ActiveX