Released: Jun 18, 2026

26.1.3 中的更新

特性

AI Agent Skills

• v26.1 introduces Agent Skills for DevExpress WPF Controls, structured knowledge packages that equip AI coding assistants with accurate, product-specific expertise for WPF controls.
• Each skill defines the correct NuGet packages, entry-point classes, API patterns, XAML markup, and configuration for a specific WPF control or usage scenario. AI assistants use this knowledge to generate accurate WPF code from the first prompt.
• Skills follow the open Agent Skills standard and work with Claude Code, GitHub Copilot (CLI, VS Code, Visual Studio, JetBrains Rider), Cursor, and Gemini CLI.

Fluent Theme (CTP)

• v26.1 introduces a new Fluent Light Theme for DevExpress-powered WPF applications. The new theme incorporates modern design practices inspired by the latest Microsoft 365 applications.

WPF AI Chat

• AI Agent Integration
  • The DevExpress WPF AI Chat Control ships with a new IChatResponseProvider abstraction layer. This layer decouples the UI from AI services and allows you to bind the AI Chat Control to different AI backends.
• Agent API Demos
  • The Demo Center includes new examples that demonstrate real-world AI agent usage scenarios and integration patterns with the DevExpress WPF AI Chat Control.
• Chat Fluent UI
  • The updated Chat UI aligns with modern Fluent design standards.
• Customize Chat Input Placeholder
  • Use the AIChatControl.InputBoxNullText property to specify placeholder text in the input box.
• API Enhancements
  • DevExpress have updated message processing APIs and refined naming for consistency.

AI-powered Extensions

• Prompt to Expression - WPF Filter Editor and Expression Editor
  • Added AI-powered expression generation to help users create filter and column expressions for DevExpress data-aware WPF controls using natural language. Users describe the desired logic in plain text. The system sends the prompt to the configured AI service and returns a valid expression. The DevExpress WPF Expression Editor and/or Filter Editor display and validate results immediately.

Accessibility Enhancements

• Pivot Grid - Filter Panel Keyboard Navigation
  • The WPF Pivot Grid includes full keyboard access to the Filter Panel.
• Spreadsheet Control - Screen Reader Support
  • Spreadsheet documents are now accessible to screen readers (Narrator, NVDA). You can navigate through document sheets, rows, columns, and cells. Readers can pronounce all worksheet headings, cell text, comments, text boxes, and alt text for images, charts, and other drawing objects.
• PDF/UA-2 Format Support
  • The PDF export engine now supports the PDF/UA-2 format (for enhanced accessibility compliance). You can specify PDF/UA-2 conformance for exported documents to meet the latest accessibility standards.

WPF Data Grid

• Expression Editor for Custom Format Conditions
  • The Expression Editor (for both the TableView and TreeListView) now supports custom conditional formatting rules. Users can define formatting rules with complex logical expressions beyond predefined rule types.
• Advanced Column and Band Drag-and-Drop
  • A new ColumnDragOver event allows you to control column and band drag & drop behavior. Handle this event to validate or modify drop operations.
• Search Panel Customization
  • Extended Search Panel customization with the following options: Minimum/maximum width and Display custom content.
• Group Panel Customization
  • Group Panel customization capabilities include: Display custom content, Align Group Panel text and Customize background color.
• Column Header Customization
  • New customization options include: Display custom sort icons, Adjust icon size, Display, hide, or reposition filter icons and Apply custom templates.
• Row Indicator Customization
  • Row Indicator Panel customization options include: Specify foreground and background colors, Display custom UI elements and icons.
• Expand Button Customization
  • New options allow you to display custom glyphs/icons within expand/collapse buttons in TreeList layouts, group and master-detail rows.
• Filter Panel Customization
  • New appearance settings allow you to customize Filter Panel UI elements.
• Foreground and background colors for fields, values, and operators.
  • A color mode that switches between standard appearance and a plain style with transparent backgrounds and inherited text colors.

WPF TreeViewControl

• API Enhancements
  • Expanded TreeViewControl API to simplify customization and reduce reliance on implicit styles.

WPF Spreadsheet Control

• New Excel Functions - The DevExpress Spreadsheet Control v26.1 supports 6 new dynamic array-based Excel functions:
  • XLOOKUP.
  • XMATCH.
  • SORT.
  • SORTBY.
  • FILTER.
  • UNIQUE.

Template Kit

• Visual Basic Support
  • The DevExpress Template Kit now supports Visual Basic. You can create DevExpress-powered WPF applications in VB.NET alongside C# templates.

 DateOnly & TimeOnly Support

• WPF Charts
  • The DevExpress WPF Chart Control supports .NET DateOnly and TimeOnly data types.
• WPF Pivot Grid
  • The DevExpress WPF Pivot Grid now supports DateOnly and TimeOnly data types for filtering, grouping, and summary operations in .NET applications.

MVVM Enhancements

• Simplified Dependency Injection (DI)
  • The DevExpress MVVM framework v26.1 includes built-in support for Dependency Injection (DI) directly in XAML.

Prism 9 Support

• Added Prism 9 support to the DevExpress adapters.

Monaco-Based Code Editor (Demo)

• DevExpress created an example that wraps the open source Monaco Editor (v0.55.1). The editor is hosted inside Microsoft WebView2 and exposed through a custom, reusable CodeEditor WPF control.