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Rich Text Editor for WinForms

Create, edit, format, and manage rich text documents in your .NET WinForms applications with ComponentOne Rich Text Editor for WinForms.

  • Create, open, edit, and save DOCX, RTF, HTML, and XHTML documents
  • Built-in ribbon and toolbar with 50+ commands accelerate rich text editing development
  • Familiar Microsoft Word-style editing experience for end users
  • Supports .NET 10 and .NET Framework 4.8
Download Free Trial (2026 v2)

Why Choose Rich Text Editor for WinForms?

Create Professional Rich Text Experiences

Create Professional Rich Text Experiences

FlexGrid continues to be the industry's fastest data grid—loading large data sets up to 10x faster than the competition.

Familiar Microsoft Word-Like Interface

Familiar Microsoft Word-Like Interface

Enjoy building your UI swiftly thanks to our smart Visual Studio design-time integration. 

Work with Popular Document Formats

Work with Popular Document Formats

Get the features you need for today and tomorrow, with an ever-growing API that allows you to customize every control to your specifications.

Reliable HTML Rendering

Reliable HTML Rendering

Go beyond the standard desktop look-and-feel with 40+ built-in themes, or create your own with our Theme Designer.

WinForms Rich Text Box Key Features

WinForms Rich Text Editor - Images & Table

Insert Images, Tables, and Hyperlinks

Create rich, interactive documents by inserting and editing tables, pictures, and links. Built-in dialogs make it easy to customize properties and formatting.

WinForms Rich Text Editor Formatting

Professional Formatting Tools

Apply fonts, styles, headings, lists, colors, alignment, and other formatting options through a familiar toolbar and ribbon experience.

Built-In Spell Checking

Built-In Spell Checking

Integrated support for spell-checking on the WebView2 component provides as-you-type spell-checking and context menu suggestions.

Additional Features

Flexible Content Access

Flexible Content Access

Programmatically access and manipulate document content with a rich API of insert before and after methods. Easily insert content into the document for custom editing solutions.

Load and Save Documents

Load and Save Documents

Load documents from files, streams, or strings and save them back in DOCX, RTF, HTML, or XHTML formats.

Preview Mode

Preview Mode

Preview mode allows you to display rich text content without editing functionality. This enables the Editor to be used as a static display of rich text instead of an editor.

Find Text

Find Text

Enable users to quickly search text with the built-in Find (Ctrl+F) dialog, or implement your own custom search experience.

Unlimited Undo and Redo

Unlimited Undo and Redo

Provide a complete editing history with unlimited undo and redo support, including standard keyboard shortcuts and programmatic access.

Clipboard Support

Clipboard Support

Support cut, copy, and paste operations for formatted text, tables, images, and other document content. Content can be pasted as rich text or plain text as needed.

See What You Can Do with ComponentOne Editor

Syntax Highlighting

Provide an Editor with Syntax Highlighting

A WinForms rich text editor can be used to provide custom syntax highlighting. We provide a sample that shows how to highlight formatted C# text.

Get Sample
Desktop Chat Editor

Create a Desktop Chat Editor

A WinForms rich text editor can be used to create a simple chat editor complete with formatting options and emojis. The text would be managed as XHTML but displayed as rich, formatted content.

Get Sample

Easy Licensing and Distribution

Manage your licenses through your MESCIUS account.

Licensing Information

ComponentOne is licensed per developer on a yearly subscription basis. You can build and publish unlimited .NET applications using ComponentOne controls during your subscription period. Published applications are royalty-free and never expire.

Learn more about licensing

Become an OEM Partner

To create your own commercially licensed SDK or web application builder, choose the Commercial OEM license. Commercial OEM and SaaS licenses are customized per customer. 

Contact Us to Learn More

End-User Licensing Agreement

Our End-User License Agreement (EULA) includes information on ComponentOne's licensing, legal agreement, and the terms and conditions that govern software usage. 

Read the EULA

ComponentOne Customer Feedback and Awards

Five Star Rating

"Prompt responses, quality feedback, and help with code examples. Fantastic service!"

RICHARD HERBERT

Five Star Rating

"Excellent product with good support"

MIKE WEBSTER

Five Star Rating

"I am very appreciative of the effort your entire team gave to make this transaction happen. Thank you for your efforts!"

SAM COLE

Top Publisher Top 10 Product
VS Award Silver
Microsoft

"When I run into complex problems, I turn to my ComponentOne Studio Enterprise toolbox."

KEN SPENSER, MICROSOFT REGIONAL DIRECTOR - FRAMEWORK MASTERS

"I love to use C1 components! I can be confident that if I need to do a particular task, ComponentOne will have the control to do the job."

SILV SORDELLO, SOFTWARE DEVELOPER

Microsoft

"As an ISV, I need tools that allow me to be competitive. Therefore, it's a must to use reliable and stable tools for customized solutions...ComponentOne provides all that to me and even more!"

DENNIS WALLENTIN, MICROSOFT MVP (EXCEL)

"Easier to use right off the bat. I liked using the Scheduler for drag-and-drop capability."

MICHELLE GIBSON, SOFTWARE ENGINEER

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