DevExpress.AIIntegration.WinForms.Chat NuGet Package

Contains classes for the DevExpress WinForms AI Chat Control. The control embeds an interactive, Copilot-inspired chat UI in your WinForms application.

Key Features

• Copilot-Inspired Chat UI for DevExpress WinForms: Embeds an interactive assistant interface that supports modern conversational workflows.

• Real-Time Streaming Responses: Display tokens as they are generated for a smoother chat experience.

• Markdown-Aware Output Pipeline: Renders responses as Markdown, provides a conversion hook, and supports HTML sanitization.

• File Attachments with Policy Controls: Allows users to attach documents and images and configure MIME type filters, allowed file extensions, and limits on file count and size.

• Prompt Suggestions and Empty-State Guidance: Provides clickable starter prompts and customizable placeholder and empty-state text.

• Advanced UI Customization: Allows you to customize message containers and content, prompt suggestions, empty-area templates, the header and title, clear-chat behavior, and input resizing.

• Message Lifecycle Extensibility: Allows you to intercept outgoing messages in MessageSending to add system prompts, validate input, redact sensitive content, or cancel delivery.

• Conversation and Context Management: Supports stateless and stateful AI services, saving and loading chat history, attaching external resources, chatting with application data, and switching between multiple chat client services.

Documentation

DevExpress WinForms AI Chat Control

Evaluation Period, Pricing Options, and Licensing Terms

Whether you own a license or want to start a 30-day evaluation, download and register your DevExpress license key. To obtain the key, sign in to the DevExpress Download Manager with your existing DevExpress.com account or create a free account. For instructions on key registration, see License Key for DevExpress Products.

If you purchase a license after evaluating a product, you need to re-register your updated DevExpress license key to remove evaluation warnings and messages.

This package is included in the following commercial subscriptions:

• DevExpress WinForms Subscription

• DevExpress DXperience Subscription

• DevExpress Universal Subscription

• DevExpress .NET Reporting Subscription

See DevExpress Subscriptions & Licensing for subscription comparison tables, purchasing FAQ, and licensing information.

Software Bill of Materials (SBOM)

For information about SBOM files for DevExpress packages, see Software Bill of Materials (SBOM) for DevExpress .NET assemblies/NuGet packages, JavaScript, VCL and other redistributable artifacts.

See Also: Information Security | Security - What You Need to Know

Useful Online Resources

• www.devexpress.com

• DevExpress Support Center

• DevExpress Blogs