RichTextBox supports importing and exporting RTF, Html, and plain text. Load existing rich text or Html into the C1RichTextBox control, edit the document, and then export it back to RTF or Html.

Edit and format text containing multiple fonts, decorations, colors, tables, images, lists, and more.

Get started immediately with the full-featured C1RichTextBoxToolbar control, or build your own custom toolbar. C1RichTextBoxToolbar includes the following commands: Paste, Cut, Copy, Undo, Redo, Font Family, Font Size, Grow Font, Shrink Font, Bold, Italic, Underline, Change Case, Subscript, Superscript, Text Color, Text Highlight Color, Align Left, Align Center, Align Right, Justify, Bullets, Numbering, Text Wrapping, Border Thickness, Border Color, Paragraph Color, Margin, Padding, Insert Image, Insert Symbol, Insert Hyperlink, Remove Hyperlink, Find and Replace, Spell Check, and additional commands for inserting/editing Tables. C1RichTextBoxToolbar uses the C1Toolbar control allowing complete customization.

C1RichTextBox for inserting and editing images. Users can easily upload images from their computer to the editor or point to an image's url on the web. Users can also select, resize and drag images on the document surface.

RichTextBox comes with many advanced table commands allowing for easier design of tables in HTML documents. Insert new tables, rows and columns with the click of a button. Specify individual cell borders, sizes and text alignments. You can even merge cells and convert plain text to tables just like in Microsoft Word.

RichTextBox fully supports paging and printing. You can edit documents in either Print Layout or Draft view; much like Microsoft Word. Print Layout supports continuous page flow when scrolling and even supports facing multiple pages horizontally.

RichTextBox supports page zooming in both print layout and draft views.

RichTextBox supports both types of spell-checking using the C1SpellChecker component:

• Modal spell checking: Shows a Spell dialog box and selects each spelling mistake in the document. The end-user may choose to ignore the mistake, fix it by typing or picking from a list of suggestions, or add the word to a user dictionary.
• As-you-type checking: Highlights spelling mistakes as the end-user types, typically with a wavy, red underline. The end-user may right-click the mistake in the document to see a menu with options that include options to ignore, add to dictionary, or pick a suggestion to correct the mistake automatically.

Edit data in the RichTextBox with confidence. You now have the ability to easily undo and redo your changes with the click of a button.

C1RichTextBox fully supports the clipboard. Implement cut/copy/paste activities within the rich textbox.

Add highlights and annotations to your documents with RichTextBox. Annotations are comments, notes, remarks or explanations that can be attached to specific part of a Web document.

In addition to direct printing, The C1RichTextBox content can be exported to PDF format.

Patterned after the Document class in WPF, RichTextBox's rich document object model (DOM) supports images, lists, hyperlinks, borders, background and foreground colors for text ranges, and more. Use the rich DOM to create and modify documents programmatically.

RichTextBox allows instantaneous editing and really fast document loading.