Essential Studio® for Windows Forms - v35.1.37 Release Notes

v35.1.37
September 29, 2026
Test Results: 10221 Success , 0 Failure

Calculate

Features

  • Added support for the following new formulas, further enhancing CalcEngine compatibility and analytical capabilities:

    • DBCS: Converts single-byte characters to double-byte characters, enhancing multilingual spreadsheet compatibility.
    • LET: Allows variables to be defined and reused within formulas, simplifying and optimizing calculations.
    • TTEST: Enables statistical hypothesis testing and dataset comparison directly within spreadsheets.
    • GROUPBY: Groups and aggregates data dynamically for streamlined analysis and reporting.
    • BETAINV/BETA.INV: Calculates the inverse beta cumulative distribution for advanced statistical analysis.

ColorPickerUIAdv

Bug Fixes

  • #I864805 - The “New” color indicator will now be updated when adjusting the slider bar.

DocIO

No Changes for this product in this version.

DockingManager

Features

  • #I852717 - Added support for displaying icons in document tabs, making it easier to visually identify and distinguish documents in the WinForms DockingManager.

pdf

No Changes for this product in this version.

Presentation

No Changes for this product in this version.

RibbonControlAdv

Bug Fixes

  • #I845357 - The title bar caption buttons will no longer lose hover highlighting or responsiveness when GDI scaling is enabled in the RibbonForm.

  • #I848668 - The RibbonGroup will now be rendered properly after ribbon merge when ToolStripEx contains dropdown menu items.

  • #I855433 - WinForms RibbonControlAdv serialization will no longer generate invalid designer code and render properly in .NET Core.

  • #I865027 - WinForms designer issues will no longer occur in the RibbonControlAdv after upgrading the Tools-Windows NuGet package.

SfAIAssistView

Features

Input TextBox Toolbar Support

Added a comprehensive input toolbar feature for the SfAIAssistView including the following capabilities:

  • Customizable toolbar actions with configurable toolbar placement.

  • Action button popups for quick access to input options.

  • Attachment management and upload status notifications.

Enhanced Avatar Rendering in AssistView

Improved the rendering behavior of the SfAvatarView used within the SfAIAssistView with the following enhancements:

  • Enhanced image scaling for sharper avatar display.

  • Support for customizing the corner radius of avatar shapes.

  • Improved styling support for displaying initials.

Performance improvements in AssistView

Improved the performance of the SfAIAssistView when handling large conversations, improving responsiveness and overall user experience.

Breaking changes

  • The AvatarSize used in SfAIAssistView has been moved to the Syncfusion.Shared.Base package. After upgrading, ensure that all existing references or imports to AvatarSize must be updated to reflect the new package/namespace location. Failure to update these references may result in compilation errors. For migration guidance and updated namespace details, refer to the documentation.

Visual Studio Extensions

Features

  • Modified the UI to split the controls based on category-wise, such as UI Component Suite, Grid SDK, Chart SDK and Diagram SDK in Template Wizard, Item Template Window, and Reference Manager Window.

XlsIO

No Changes for this product in this version.

Test Results

Component Name Test Cases Passed Failed Remarks
AI AssistView 27 27 0 All Passed
AutoComplete 59 59 0 All Passed
AutoLabel 3 3 0 All Passed
Breadcrumb 2 2 0 All Passed
Button 5 5 0 All Passed
ButtonAdv 3 3 0 All Passed
Calendar 2 2 0 All Passed
Carousel 7 7 0 All Passed
Chart 964 964 0 All Passed
CheckBox 135 135 0 All Passed
Color Picker 30 30 0 All Passed
Color Picker DropDown 3 3 0 All Passed
ComboBox 70 70 0 All Passed
ComboBoxAdv 344 344 0 All Passed
ComboDropDown 60 60 0 All Passed
CommandBarController 1 1 0 All Passed
CurrencyEdit 1 1 0 All Passed
DataGrid 966 966 0 All Passed
DateTimePicker 106 106 0 All Passed
DateTimePickerAdv 45 45 0 All Passed
Digital Gauge 7 7 0 All Passed
Docking Manager 2006 2006 0 All Passed
DomainUpDownExt 4 4 0 All Passed
DoubleTextBox 3 3 0 All Passed
FontListBox 2 2 0 All Passed
Form 24 24 0 All Passed
Gradient Panel 4 4 0 All Passed
GroupView 4 4 0 All Passed
HTML Viewer 67 67 0 All Passed
Image Streamer 3 3 0 All Passed
Linear Gauge 58 58 0 All Passed
ListView 67 67 0 All Passed
Menu 15 15 0 All Passed
MessageBox 27 27 0 All Passed
Metro Form 31 31 0 All Passed
MonthCalendarAdv 25 25 0 All Passed
Multicolumn ComboBox 10 10 0 All Passed
Multicolumn TreeView 105 105 0 All Passed
MultiSelectionComboBox 7 7 0 All Passed
Navigation Drawer 53 53 0 All Passed
Navigation Pane 38 38 0 All Passed
Numeric TextBox 5 5 0 All Passed
NumericUpdown 7 7 0 All Passed
Office 2007 Form 71 71 0 All Passed
PercentTextBox 8 8 0 All Passed
Pivot Chart 124 124 0 All Passed
Pivot Grid 216 216 0 All Passed
Popup 7 7 0 All Passed
Progress Bar 68 68 0 All Passed
Radial Gauge 89 89 0 All Passed
Radial Menu 2 2 0 All Passed
Radial Slider 18 18 0 All Passed
Range Slider 7 7 0 All Passed
Rating Control 1 1 0 All Passed
Ribbon 1517 1517 0 All Passed
Scroll Frame 2 2 0 All Passed
SfDataPager 95 95 0 All Passed
Spell Checker 51 51 0 All Passed
Splash Screen 3 3 0 All Passed
Split Button 22 22 0 All Passed
StatusStrip 22 22 0 All Passed
SuperToolTip 3 3 0 All Passed
Syntax Editor 541 541 0 All Passed
Tabbed Form 26 26 0 All Passed
TabbedMdiManager 481 481 0 All Passed
TabControl 731 731 0 All Passed
TextBox 19 19 0 All Passed
ToolBar 4 4 0 All Passed
TrackBar 1 1 0 All Passed
Tree Navigator 19 19 0 All Passed
TreeView 478 478 0 All Passed
Wizard Control 81 81 0 All Passed
XpTaskbar 109 109 0 All Passed