Description

Create modern, supercharged WinForms applications in no time. Now with .NET 8 and 9 Support.

Telerik UI for WinForms delivers 160+ controls to meet your application requirements for data handling, performance, UX, design, accessibility, and so much more. Take a look at our featured WinForms controls.

Key Features
Extensive Set of Controls
Leverage 160+ WinForms UI controls and build high-performance, rich and beautiful desktop applications in half the time.

Full-featured Data Grid
Leverage Telerik UI for WinForms high-performance Data Grid including advanced filtering, grouping, sorting and 100+ more features.

Modern Professional Themes
Give your application a unique and modern look and feel with a wide range of Office, Windows and Visual Studio Inspired themes.

Exceptional Performance and User Experience
Easily create fast, optimized and professional-looking applications with the Telerik UI for WinForms library.


Consistent API for Easy Customization
Each WinForms UI component and its API are carefully crafted for quality and ease of customization.

Document Processing
Process the most common Text, Spreadsheet and PDF file formats without any dependencies on external libraries.

Multi-Touch Support
Utilize full multi-touch support and API out-of-the-box enabling you to easily handle touch gestures occurring on the screen.


Built-in High DPI Support
Ship high quality and perfectly scaled applications on high resolution monitors, ensuring users get a seamless experience.

Accessibility and UI Automation
All Telerik UI for WinForms controls comply with the latest accessibility and UI automation standards, including MSAA, Appium, and Section 508 best practices.

Telerik UI for WinForms 2024.4.1113 (2024 Q4)

What's new
NEW

.NET 9 distribution support.
Windows 11 High Contrast theme.
DateOnlyPicker and TimeOnlyPicker controls (.NET only).
New JSON syntax highlight for RadSyntaxEditor.
Load-on-demand with self-reference hierarchy for RadGridView.
Improve keyboard navigation of the pinned items in RadNavigationView.
UI Automation support for RadListControl and RadDropDownList.
PDF Processing: Introduced support for jаvascript actions.
PDF Processing: Introduced support for ligatures.
WordsProcessing: Introduced support for Justify text alignment.

CHANGED

The support for .NET 7 is discontinued.
Document Processing Libraries: Remediated (CVE-2024-8049).

Common
CHANGED

NOTE for an upcoming CHANGE: CHM and Help3 offline documentation resources will be discontinued, starting from 2025 Q2.

RadDropDownList
NEW

UI Automation support.

FIXED

The control is focused when moving the form between monitors with different DPI scaling.
The drop down is not scaled correctly when using 2 monitors with different DPI.
PopupOpening event is called when a dialog gets moved to a screen with different DPI.

RadGridView
NEW

Load-on-demand with self-reference hierarchy.

FIXED

Excel-like popup is not scaled properly on High DPI.
The editor of GridViewCalculatorColumn resets the value of the call to 0.
Error when exporting grid using GridViewSpreadExport with AutoSizeRows=true and added GroupDescriptor.
GridViewCheckBoxColumn incorrectly shows a header check mark when the last row still remains unchecked.

RadListControl
NEW

UI Automation support.

RadMaskedEditBox
FIXED

The standard mask resets the current editable position when entering a space character.
Clear button doesn't clear numeric values.

RadMultiColumnComboBox
FIXED

In higher DPI, the popup editor width is not calculated correctly, and the grid's font is double scaled.
First value gets selected with DPI scaling above 100%.

RadRichTextEditor
FIXED

InvalidCastException when loading a document that contains shapes with custom geometry.
Setting ScaleFactor of the editor is not respected on High DPI.
Unsafe deserialization vulnerability when importing external style sheets (CVE-2024-10013).

RadSyntaxEditor
NEW

New JSON syntax highlight.

FIXED

Word Wrap breaks coloring of long words that span across multiple lines.
Caret is mispositioned when scrolling and clicking on a longer text outside of the view.

TPF
FIXED

Windows 11 feature RoundedCornersStyle needs to have lower corner radius and smaller shadow for the popups.

PdfProcessing
NEW

Introduced support for Matte color for Soft-Mask Images (SMasks).
Introduced support for creating documents using CMYK colors.
Introduced support for jаvascript actions API.
SkiaImageFormatProvider: Introduced support for Text, TextMarkup, Line, and Stamp annotations.
Respect the ExtGState`s current stroking alpha constant (CA & ca) when rendering images.
Introduced support for ligatures.
Introduced handling the import of documents with the wrong type of action key.
Introduced support for Trigger Events API related to JS actions.
Introduced API for setting Image opacity.
Introduced support for RTL (Right-To-Left) text.
Introduced Soft-Mask Dictionaries in ExtGState object.
Implemented Blend Mode parameter of ExtGState object.
Introduced support for Trigger Events.
Justified text is now supported.
Introduced support for Transparency Group XObjects.
Introduced RadFixedDocument`s HasLayers property.

FIXED

An InvalidOperationException is thrown while parsing the Post table of a specific font file on export.
Wrong colors are exported in Separation colorspaces with ICCBased containing LabColor due to incorrect calculations in Tint transformation function.
Win32Exception is thrown during a long-running process importing many documents with images.
An unexpected trace warning when SVG document does not contain clipping.
Distorted SVG after exporting.
A NullReferenceException is thrown when writing image content with the PdfPageStreamWriter.
ArgumentNullException is thrown when resolving DecodeParms collection in Image XObject.
Form XObject does not takes graphic state color from its content stream context.
Document text overlaps and is not possible to read for a specific document.
Decreased performance when loading thumbnails.
Wrong color appears when the Separation color space with name is set to None.
Watermark transparency is not imported correctly.
The Form object does no inherit the graphics state of the page.
RTL (right-to-left) text is reversed when inserting it directly to a document.

SpreadProcessing
FIXED

Exporting a workbook with two or more charts with axes produces an invalid document.
Built-in number formats are not reevaluated after changing the culture.

SpreadStreamProcessing
NEW

Introduced support for importing files with absolute relationship targets.

FIXED

Cell iteration is interrupted when it hits a cell containing an error.

WordsProcessing
NEW

Introduced support for Justify text alignment.

FIXED

RtfFormatProvider: Heading color is not properly exported.
An InvalidOperationException is thrown when exporting a document containing table with no cells.
DocFormatProvider: IndexOutOfRangeException is thrown when importing a specific document with defined section columns.
ArgumentException is thrown during MailMerge of a document with an inline shape.

ZipLibrary
FIXED

An invalid content appears after updating an empty password-protected archive.

Additional Information