# DocumentViewer Preview: Completing Form Fields > We just published a pre-release version of the DocumentViewer for ASP.NET (Core) that supports the completion of form fields within a document signing process. - **Author:** Bjoern Meyer - **Published:** 2021-04-15 - **Modified:** 2026-07-17 - **Description:** We just published a pre-release version of the DocumentViewer for ASP.NET (Core) that supports the completion of form fields within a document signing process. - **2 min read** (227 words) - **Tags:** - ASP.NET - DocumentViewer - Electronic Signature - MVC - **Web URL:** https://www.textcontrol.com/blog/2021/04/15/document-viewer-preview-completing-form-fields/ - **LLMs URL:** https://www.textcontrol.com/blog/2021/04/15/document-viewer-preview-completing-form-fields/llms.txt - **LLMs-Full URL:** https://www.textcontrol.com/blog/2021/04/15/document-viewer-preview-completing-form-fields/llms-full.txt --- We just published a [pre-release version](https://www.nuget.org/packages/TXTextControl.Web.DocumentViewer/29.0.302.500-beta) of the DocumentViewer for ASP.NET that supports the completion of MS Word compatible form fields during the document signing process. The following screenshot shows the available text form fields, checkboxes, dropdowns and date picker fields in our dedicated [document signing demo](https://esign.textcontrol.com): ![Form Fields](https://s1-www.textcontrol.com/assets/dist/blog/2021/04/15/a/assets/overview_6.webp "Form Fields") ### Field Validation Form fields are available automatically when they are part of the document that is loaded into the DocumentViewer. Based on the Conditional Instructions, required fields are validated during the signing process. ![Form Fields](https://s1-www.textcontrol.com/assets/dist/blog/2021/04/15/a/assets/overview_7.webp "Form Fields") In the resulting, merged document, the form fields are converted to text: ![Form Fields](https://s1-www.textcontrol.com/assets/dist/blog/2021/04/15/a/assets/esign_completed_form.webp "Form Fields") ### Fully Featured Demo Our [Electronic Signature Demo](https://esign.textcontrol.com) has been extended with a designer that shows how to insert the form fields including validation into a document: ![Form Fields](https://s1-www.textcontrol.com/assets/dist/blog/2021/04/15/a/assets/editor.webp "Form Fields") Learn more about electronic signatures and the technology behind it by taking a look at the dedicated demo website: [Launch Demo ](https://esign.textcontrol.com) --- ## About Bjoern Meyer As CEO, Bjoern is the visionary behind our strategic direction and business development, bridging the gap between our customers and engineering teams. His deep passion for coding and web technologies drives the creation of innovative products. If you're at a tech conference, be sure to stop by our booth - you'll most likely meet Bjoern in person. With an advanced graduate degree (Dipl. Inf.) in Computer Science, specializing in AI, from the University of Bremen, Bjoern brings significant expertise to his role. In his spare time, Bjoern enjoys running, paragliding, mountain biking, and playing the piano. - [LinkedIn](https://www.linkedin.com/in/bjoernmeyer/) - [X](https://x.com/txbjoern) - [GitHub](https://github.com/bjoerntx) --- ## Related Posts - [Creation of Custom Electronic Signature Boxes](https://www.textcontrol.com/blog/2021/06/15/creation-of-custom-electronic-signature-boxes/llms.txt) - [DocumentViewer Mobile-Friendly View Released](https://www.textcontrol.com/blog/2022/01/20/document-viewer-mobile-friendly-view-released/llms.txt) - [Electronic Signatures: Document Audit Trails](https://www.textcontrol.com/blog/2021/10/14/electronic-signatures-document-audit-trails/llms.txt) - [Combine Form Fields, Merge Fields and Signature Boxes to Request Signatures](https://www.textcontrol.com/blog/2021/10/12/combine-form-fields-merge-fields-and-signature-boxes-to-request-signatures/llms.txt) - [eSign Demo: Requesting Signatures from Multiple Signers](https://www.textcontrol.com/blog/2021/10/07/esign-demo-requesting-signatures-from-multiple-signers/llms.txt) - [Using the MVC DocumentViewer in ASP.NET Web Forms](https://www.textcontrol.com/blog/2021/08/12/using-the-mvc-documentviewer-in-aspnet-web-forms/llms.txt) - [DocumentViewer for .NET Core 3.1 Released](https://www.textcontrol.com/blog/2020/04/08/documentviewer-for-dotnet-core-released/llms.txt) - [Using Multiple Electronic Signatures on a Document](https://www.textcontrol.com/blog/2019/10/23/using-multiple-electronic-signatures/llms.txt) - [E-Sign Comes to Blazor: Document Viewer 33.0.1 Released](https://www.textcontrol.com/blog/2025/04/24/e-sign-comes-to-blazor-document-viewer-33-0-1-released/llms.txt) - [Adoption of Electronic vs. Paper Signatures in 2025](https://www.textcontrol.com/blog/2025/04/15/adoption-of-electronic-vs-paper-signatures-in-2025/llms.txt) - [Sign Documents with a Self-Signed Digital ID From Adobe Acrobat Reader in .NET C#](https://www.textcontrol.com/blog/2024/08/12/sign-documents-with-a-self-signed-digital-id-from-adobe-acrobat-reader-in-net-c-sharp/llms.txt) - [How to Sign Signature Fields with Custom Signer Information and Time Stamps in ASP.NET Core C#](https://www.textcontrol.com/blog/2024/06/21/how-to-sign-signature-fields-with-custom-signer-information-and-time-stamps-in-asp-net-core-c-sharp/llms.txt) - [Transforming Financial Documents into Smart and Secure Forms in ASP.NET Core C#](https://www.textcontrol.com/blog/2024/05/01/transforming-financial-documents-into-smart-and-secure-forms-in-asp-net-core-c-sharp/llms.txt) - [Handling Electronic Signatures in a Blazor Web App using .NET 8](https://www.textcontrol.com/blog/2024/02/06/handling-electronic-signatures-in-a-blazor-web-app-using-net-8/llms.txt) - [New White Paper: Integrate Digital Documents](https://www.textcontrol.com/blog/2023/08/11/new-white-paper-integrate-digital-documents/llms.txt) - [Preview: TX Text Control DocumentViewer Becomes a Web Component](https://www.textcontrol.com/blog/2023/03/10/preview-tx-text-control-documentviewer-is-becoming-a-web-component/llms.txt) - [Customize Signature Fields with Dynamically Created SVG Images](https://www.textcontrol.com/blog/2023/01/13/customize-signature-fields-with-dynamically-created-svg-images/llms.txt) - [Electronic Signatures: Requesting Signatures from Multiple Signers using Custom Signature Workflows](https://www.textcontrol.com/blog/2023/01/02/electronic-signatures-requesting-signatures-from-multiple-signers-using-custom-signature-workflows/llms.txt) - [DocumentViewer: Aspect Ratio Scaling of Signature Annotations](https://www.textcontrol.com/blog/2022/12/28/documentviewer-aspect-ratio-scaling-of-signature-annotations/llms.txt) - [New MailMerge Live Demo: Form Field Mail Merge](https://www.textcontrol.com/blog/2022/12/21/new-mailmerge-sample-form-field-mail-merge/llms.txt) - [What is the Difference between Electronic and Digital Signatures?](https://www.textcontrol.com/blog/2022/10/20/what-is-the-difference-between-electronic-and-digital-signatures/llms.txt) - [Getting Started: ServerTextControl and MailMerge with ASP.NET MVC (.NET Framework)](https://www.textcontrol.com/blog/2022/09/01/getting-started-servertextcontrol-and-mailmerge-with-aspnet-net-framework/llms.txt) - [Getting Started: Document Viewer with ASP.NET MVC (.NET Framework)](https://www.textcontrol.com/blog/2022/09/01/getting-started-document-viewer-with-aspnet-framework/llms.txt) - [Getting Started: Document Editor with ASP.NET MVC (.NET Framework)](https://www.textcontrol.com/blog/2022/09/01/getting-started-document-editor-with-aspnet-framework/llms.txt) - [DocumentViewer: Deploy and Transfer Documents to Mobile Devices](https://www.textcontrol.com/blog/2022/03/16/documentviewer-deploy-and-transfer-documents-to-mobile-devices/llms.txt)