Steps to Edit RTF in C#

GroupDocs.Editor for .NET provides an easy and straightforward way for developers to edit the RTF files using a few lines of code.

Create an instance of Editor class with mandatory file path or stream and optional WordProcessingLoadOptions class and load the RTF file
Create & set the WordProcessingEditOptions class instance for the RTF file format
Call Editor.Edit() method and obtain RTF document in HTML format that is easily editable with any WYSIWYG-editor.
Call Editor.Save() method and save edited RTF file using WordProcessingSaveOptions class

System Requirements

A basic document editing with GroupDocs.Editor for .NET APIs can be done by implementing a few easy steps. Our APIs are supported on all major platforms and operating systems. Before executing the code below, please make sure that you have the following prerequisites installed on your system.

Operating Systems: Microsoft Windows, Linux, MacOS
Development Environments: Microsoft Visual Studio, Xamarin, MonoDevelop
Frameworks: .NET Framework, .NET Standard, .NET Core, Mono
Get the latest version of GroupDocs.Editor for .NET downloaded from NuGet

// Load the RTF file into Editor with the optional WordProcessingLoadOptions
Editor editor = new Editor("source.rtf", delegate { return new WordProcessingLoadOptions(); });

// Create and adjust the edit options
WordProcessingEditOptions editOptions = new WordProcessingEditOptions();

// Open input RTF document for edit — obtain an intermediate document, that can be edited
EditableDocument beforeEdit = editor.Edit(editOptions);

// Grab RTF document content and associated resources from editable document
string content = beforeEdit.GetContent();

// Send the content to WYSIWYG-editor, edit it there, and send edited content back to the server-side
// This step simulates a such operation
string updatedContent = content.Replace("Subtitle", "Edited subtitle");

// Grab edited content and resources from WYSIWYG-editor and create a new EditableDocument instance from it
EditableDocument afterEdit = EditableDocument.FromMarkup(updatedContent, null);

// Create a save options and select a desired output format
WordProcessingSaveOptions saveOptions = new WordProcessingSaveOptions(Formats.WordProcessingFormats.Rtf);

// Save edited RTF document to the file
editor.Save(afterEdit, "edited.rtf", saveOptions);