Released: Jun 18, 2026

26.1.3 버젼 업데이트

기능

Security Enhancements

• DevExpress expanded internal security diagnostics (including custom analyzers) across engineering workflows. 

WinForms AI Chat

• AI Agent Integration
  • The DevExpress WinForms 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 WinForms 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.

Accessibility Enhancements

• 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.

Template Kit

• Visual Basic Support
  • The DevExpress Template Kit now supports Visual Basic. You can create DevExpress-powered WinForms applications in VB.NET alongside C# templates.
• Updated Template Appearance
  • Updated the WinForms project templates. Most templates now use the WXI skin and include Rounded Skin Panels.

DateTimeOffset Support

• Criteria Operators
  • DateTimeOffset support is part of the 2026 roadmap. v26.1 adds support to the core criteria engine and date/time CriteriaOperator functions. v26.2 will add support to DevExpress data-aware controls.
• EF Core Server Mode Support
  • DateTimeOffset functions are now compatible with EF Core Server Mode (Microsoft SQL Server). EntityServerModeSource generates Microsoft SQL Server-compatible LINQ queries for DateTimeOffset properties and processes results using native DateTimeOffset support.

DateOnly & TimeOnly Support

• WinForms Pivot Grid
  • The DevExpress WinForms Pivot Grid now supports DateOnly and TimeOnly data types for filtering, grouping, and summary operations within DevExpress-powered .NET applications.

WinForms Memo Editors

• Auto Hide Scrollbars
  • DevExpress WinForms MemoEdit and MemoExEdit controls automatically toggle scrollbar visibility based on content size.

WXI Skin Enhancements

• Improved control sizing.
• Consistent layout across UI elements.
• Customizable placeholder text color.
• Enhanced text contrast.

Rounded Skin Panel

• Runtime Resizing
  • The new AllowResize option activates runtime panel resizing.

WinForms Spreadsheet

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

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 WinForms control.