.NET 8 WinForms 新聞

DevExpress WinForms is a comprehensive suite of 190+ UI controls and development tools designed for building high-performance desktop applications. It offers a broad array of customizable controls, from data grids and ribbon interfaces to advanced charts, maps, and diagramming components. This empowers developers to rapidly create functionally rich applications, while adhering to accessibility guidelines and touch-enabled technology for modern Windows environments.

The DevExpress WinForms 25.2 update introduces multi-provider support in the AI Chat Control, allowing developers to integrate several AI services into one application. This enables advanced use cases such as side-by-side comparison of responses from different AI models, concurrent sessions with independent chat histories, and dynamic switching between providers during runtime. It’s especially useful in environments where evaluating model performance or offering user choice is essential, such as customer support tools, research platforms, or development sandboxes.

To see a full list of what's new in version 25.2, see our release notes.

DevExpress WinForms is licensed per developer and is available as a Perpetual License with a 12 month support and maintenance subscription. See our DevExpress WinForms licensing page for full details.

DevExpress WinForms is available individually or in the following products:

• DevExpress DXperience
• DevExpress Universal

PDF annotation in .NET WinForms PDF viewer components refers to the ability to add visual and textual markup directly onto PDF documents without altering the original content. These tools allow users to draw shapes, highlight text, insert comments, and place notes within the viewing interface, supporting workflows such as document review, feedback, and approval. This functionality improves collaboration and clarity in document handling, making it well-suited for document processing tasks in WinForms applications.

Common features include:

• Freehand Draw (Ink Annotation) allows users to sketch, underline, or handwrite directly on the page using a mouse, stylus, or touch input, making it ideal for markups and signatures.
• Lines provide a simple way to connect points or emphasize linear elements within a document, often with configurable thickness, color, and opacity.
• Rectangles enable users to highlight or frame areas of interest, supporting both outlined and filled styles for visual emphasis.
• Ellipses offer a similar highlighting function to rectangles but with a rounded shape, useful for circling content or marking irregular regions.
• Arrows are commonly used to direct attention to specific content, combining line styling with arrowheads to clearly indicate focus or flow.
• Sticky Note annotations allow users to attach comments to precise locations in the document, typically displayed as icons that reveal text on interaction.
• Free Text enables direct placement of typed text onto the page with control over font, size, color, and alignment, supporting clear, visible commentary without pop-ups.

For an in-depth analysis of features and price, visit our WinForms PDF viewer components comparison.

Explore WinForms PDF Annotation Features