> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/uwp/forms.md). # Forms - [UWP PDF form filling library](https://docs.apryse.com/uwp/forms/forms.md): Learn how to import and export form data in PDFs, create new form fields, fill existing form fields, and flatten form fields. Get started now! The Apryse uwp SDK streamlines secure document processing - [Form builder](https://docs.apryse.com/uwp/forms/form-builder.md) - [Merge Form Data File (FDF or XFDF) to PDF Forms in UWP](https://docs.apryse.com/uwp/forms/import-data.md): Learn how to efficiently merge XFDF or FDF annotations into PDF documents using FDFUpdate, FDFMerge, and MergeXFDF APIs. Choose the best method for your use case. The Apryse uwp SDK streamlines secure - [Extract FDF data from a PDF in UWP](https://docs.apryse.com/uwp/forms/export-data.md): Learn how to extract data from PDF to FDF and export FDF as XFDF with full support for Forms Data Format. Explore sample code for FDF merge/extract functionality here! The Apryse uwp SDK streamlines s - [Create new form fields and widget annotations in UWP](https://docs.apryse.com/uwp/forms/new-fields.md): Learn how to create new form fields and widget annotations within a PDF document. Explore PDF interactive forms (AcroForms) and understand field types for optimized user engagement. The Apryse uwp SDK - [Filling PDF form fields in UWP](https://docs.apryse.com/uwp/forms/fill-fields.md): We show how to fill PDF form fields in UWP. Guide includes sample code. - [Flatten PDF form content in UWP](https://docs.apryse.com/uwp/forms/flatten.md): Learn how to flatten form fields in a PDF document using PDF interactive forms (AcroForms) with sample code and tips for annotation flattening. Discover the benefits of form flattening and how to impl - [APIs for PDF form filling in UWP](https://docs.apryse.com/uwp/forms/apis.md): Discover utility classes for forms on PDF documents in UWP (C#/VB/JS) using pdftron.FDF.FDFDoc and pdftron.FDF.FDFField. Enhance your PDF form functionality now! The Apryse uwp SDK streamlines secure - [Code samples to fill PDF forms & extract data in UWP](https://docs.apryse.com/uwp/forms/samples.md): Discover how to enhance your PDF interactive forms with PDFNet capabilities. Learn about form fill, data extraction, and FDF merge/extract functionality. Optimize your forms now! The Apryse uwp SDK st --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.apryse.com/uwp/forms.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.