Essential Studio for ASP.NET CORE - v35.1.37 Release Notes

v35.1.37

September 29, 2026

Test Results: 82635 Success , 0 Failure

3D Charts

Features

#I796801 - Smart Label support: Added smart label support for StackingColumn and StackingBar series in the 3D Chart control. This feature automatically relocates overlapping data labels and supports smart label customization through the SmartLabelSettings property, including background, border, connector line, pointer shape, and offset settings.
#I862185 - Added support for accessing the underlying data object of a specific series point through the TooltipRender event arguments using the RawData property.

3D Circular Charts

Features

#I862185 - Added support for accessing the underlying data object of a specific series point through the TooltipRender event arguments using the RawData property.

Accumulation Charts

Features

#I862185 - Added support for accessing the underlying data object of a specific series point through the TooltipRender event arguments using the RawData property.

AIAssistView

Features

Mentions: Now the AI AssistView supports rendering mention items within prompts, allowing users to reference relevant entities directly in their queries. This helps create context-aware prompts, provides additional context to the AI service, and enables more accurate and relevant responses.

Explore the demo here
Telemetry: Now the AI AssistView supports telemetry data visualization through the response toolbar item, with tooltips displaying the data when hovered. It provides AI usage metrics such as model name, token counts, response status, streaming chunks, and response duration for monitoring and analysis.

Explore the demo here
Response animation template: Now the AI AssistView supports custom response animation templates, enabling users to replace the default skeleton loader with their own animation UI. The custom template is displayed while the AI response is being generated and is automatically replaced once the response content is rendered.

Explore the demo here
Footer toolbar left item align: Now the AI AssistView supports aligning footer toolbar items to the left side of the footer toolbar in the Inline mode, allowing users to customize the placement of built-in and custom toolbar actions for improved layout flexibility and user experience.

Explore the demo here
Now the AI AssistView provides a new attachmentRemoving event, allowing users to intercept attachment removal actions and access details of the file being removed. This enables custom validation, state management, and attachment handling before the removal is completed.

Charts

Features

#I822390 - Smart Label support: Added smart label support for StackingColumn, StackingBar, StackingColumn100, and StackingBar100 series in the Chart control. This feature automatically relocates overlapping data labels and provides customization options through the SmartLabelSettings property, including background, border, connector line, pointer shape, and offset settings.
#I862341 - LegendRender event: Enhanced the LegendRender event by including the associated series in the event arguments. This improvement enables users to access the corresponding series directly from the legend item during rendering. It facilitates advanced customization scenarios such as modifying legend text, styling legend items based on series properties, and implementing custom rendering logic.
#I862185 - Added support for accessing the underlying data object of a specific series point through the TooltipRender event arguments using the RawData property.

Bug Fixes

#I871749 - Resolved an exception that occurred when disabling the legend dynamically after rendering an empty chart and refreshing the series.
#I870812 - The scrollbar now renders correctly when EnableRtl and EnableZoom are enabled on the horizontal axis.
#I869843 - Added support for rendering stacking labels for zero values and null values treated as zero in StackingColumn charts.

Dashboard Layout

Features

Added support for customizing panel heights in mobile view through the mobilePanelHeight property. This property overrides the default sizeY value for individual panels, supports decimal cell values for granular responsive layouts, and falls back to sizeY when undefined. See documentation link.

Grid

Features

Introduced Advanced Filtering support, enabling users to perform complex filtering operations through an integrated Query Builder displayed in a dialog. This provides an intuitive way to create and manage multiple filter conditions with ease. Explore the demo here.
Added Formula Cell support, allowing users to define formulas and perform calculations directly within Grid cells, similar to spreadsheet applications. This enhancement simplifies data computation and improves productivity. Explore the demo here.
Introduced a Row Number column feature that automatically displays sequential numbers for data rows, making it easier to identify, reference, and navigate records. Explore the demo here.
Added support for customizing Header Row Height, enabling greater control over header presentation and allowing header rows to better accommodate varying content and layout requirements.
Introduced Empty Sticky Row support, ensuring the empty row remains visible during horizontal scrolling. This enhancement provides a more consistent and seamless user experience when working with wide datasets. Explore the demo here.

File Manager

Features

Enhanced the fileOpen event with a new action argument, allowing users to identify whether the event was triggered by actions such as drag-and-drop, double-click, keyboard interaction, or context menu selection, and prevent file opening when required.

Form Builder `Preview`

The ASP.NET Core Form Builder provides a visual form-authoring experience for creating dynamic, schema-driven forms through an intuitive drag-and-drop interface. Built on Syncfusion components, it supports end-to-end form creation with capabilities such as field customization, live form preview, JSON schema generation, validation configuration, conditional rules, expression-based calculations, custom validation logic, and more.

Explore the demo here

Explore the documentation here

Features

Visual form designer - Create and organize form layouts effortlessly by placing fields within the design surface and arranging them as required.
Rich collection of form controls - Build forms using 20+ preconfigured controls, including text input, dropdown list, combo box, multi-select, date picker, time picker, checkbox, radio button, slider, rating, signature, and file upload.
Custom components - Extend the Form Builder by registering custom components for specialized fields and business-specific inputs.
Field property management - Configure labels, field identifiers, placeholders, validation settings, and additional field-specific attributes from a centralized property panel.
Conditional logic - Define conditions that dynamically control the visibility and behavior of form elements based on user input.
Cascading dropdowns - Create linked dropdown fields where one dropdown’s options are determined by the selection in another.
Expressions - Generate and update field values automatically using expression-based formulas and field dependencies.
Interactive form preview - Examine the form’s appearance and behavior in real time before publishing or deployment.
Schema inspection - Review the generated JSON schema for validation, analysis, integration, and reuse purposes.
Save and load form data* - Persist form configurations as JSON schemas and restore them later while preserving the complete structure and settings.

Form Renderer

Features

Added support for rendering custom components using templates through the customWidgetSettings property. Templates can replace built-in form components with custom or third-party UI components, providing greater flexibility for form customization and integration scenarios. See demo.

GanttChart

Features

#I850631, #I719854, #I851120 - Added support for Week and Month duration units, enabling users to define and manage task durations using larger scheduling intervals. This enhancement simplifies the planning and visualization of long-duration tasks and improves schedule management for large-scale projects spanning weeks or months. See demo link.
#I601185 - Added support for task-level custom calendars, allowing individual tasks to use their own working calendar independent of the project calendar. This feature supports task-specific working days, weekends, holidays, and working hours, enabling more accurate scheduling across different shifts, regions, project requirements, and resource availability scenarios. See demo link.
#I822409 - Added support for automatically generating and displaying serial numbers through the enableSerialNumber property. Serial numbers are dynamically recalculated based on the current row order and remain synchronized during filtering, searching, CRUD operations, sorting, and row reordering actions. See demo link.
Added support for drag-to-draw taskbar creation through the allowTaskbarDraw property. Users can now create and schedule unscheduled tasks directly on the Gantt timeline by dragging within the chart area, providing a faster and more intuitive task planning experience. See demo link.
#I807574 - Added support for restricting task dependencies to specific predecessor relationship types using the allowedDependencyTypes property. Supported dependency types include Finish-to-Finish (FF), Finish-to-Start (FS), Start-to-Finish (SF), and Start-to-Start (SS). Only the configured relationship types are available for rendering and editing, helping organizations enforce project scheduling standards. See demo link.
Added support for hierarchical checkbox selection through the hierarchyCheckboxMode property. The feature provides Self, Hierarchy, and FilteredHierarchy selection modes, with automatic child selection, parent state synchronization, and indeterminate states for partially selected task hierarchies. See demo link.

Inline AI Assist

Features

Speech to Text: Now the Inline AI Assist supports built-in Speech-to-Text functionality, allowing users to input prompts and messages using voice recognition. Speech recognition settings can be configured using the speechToTextSettings property.

Explore the demo here

MultiSelect

Features

Added support for the Summary Tag Template feature through the summaryTagCount and summaryTagTemplate properties. When the number of selected items exceeds the configured threshold, a custom formatted summary is displayed in the input field instead of individual selection tags, improving performance when using CheckBox mode with large datasets and the SelectAll option. See documentation link.

Pivot Table

Features

#I745091 - Improved memory usage and overall performance when processing large volumes of data in the Pivot Table.
Added support for Web MCP (Model Context Protocol), enabling AI agents and external applications to interact with Pivot Table reports through a standardized tool-based interface. This support allows programmatic operations such as report configuration, field management, filtering, sorting, drill operations, formatting, chart interactions, and exporting.

Breaking Changes

As part of API naming improvements, the repeatItemLabels property has been deprecated. Its functionality is now provided by the repeatRowHeaderLabels property, ensuring backward compatibility while promoting a clearer and more consistent API.

Deprecated Property	Recommended Property
`repeatItemLabels`	`repeatRowHeaderLabels`

StockChart

Features

Live Data Point: Added live update support in the Stock Chart control using the AddPoint and SetData methods. This feature allows users to add new data points in real time and update existing points dynamically, ensuring smooth visualization of continuously changing stock market data with improved performance and responsiveness.
Performance for StockChart: Improved the initial rendering performance of the Stock Chart control for large data sets. Optimizations in series processing, point rendering, and chart initialization have reduced the rendering time for 500,000 data points from ~20 seconds to 3–4 seconds. This enhancement significantly improves chart loading speed, reduces UI latency, and ensures a more responsive experience when visualizing large-scale financial data.

Tree Grid

Features

Introduced DOM virtualization support to improve rendering performance by minimizing the number of DOM elements created during scrolling, making the Tree Grid more efficient when handling large datasets. Explore the demo here.
Improved the Checkbox Column feature by introducing Self, Hierarchy, and FilteredHierarchy selection modes, enabling flexible selection behavior for hierarchical data and preserving selection states across filtering operations. Explore the demo here.

Visual Studio Extensions

Features

Modified the UI to split the controls in Sample Creator Window based on category-wise, such as UI Component Suite, Grid SDK, Scheduler SDK, Gantt SDK, Rich Text Editor SDK, Diagram SDK, Chart SDK, File Manager SDK, Document SDK, PDF Viewer SDK, DOCX Editor SDK, and Spreadsheet Editor SDK

Test Results

Component Name	Test Cases	Passed	Remarks
3D Chart	326	326	All Passed
3D Circular Chart	466	466	All Passed
Accordion	116	116	All Passed
AI Assist View	603	603	All Passed
App Bar	67	67	All Passed
AutoComplete	200	200	All Passed
avatar	45	45	All Passed
Block Editor	2869	2869	All Passed
Breadcrumb	160	160	All Passed
Bullet Chart	169	169	All Passed
Button	145	145	All Passed
ButtonGroup	120	120	All Passed
calendar	178	178	All Passed
Carousel	62	62	All Passed
Chart	8748	8748	All Passed
Chat UI	690	690	All Passed
Checkbox	37	37	All Passed
CircularGauge	532	532	All Passed
ColorPicker	130	130	All Passed
Combo Box	149	149	All Passed
Common	906	906	All Passed
Context Menu	106	106	All Passed
Dashboard layout	33	33	All Passed
Data Grid	4579	4579	All Passed
Date Picker	437	437	All Passed
Date Range Picker	529	529	All Passed
Date Time Picker	327	327	All Passed
Diagram	17310	17310	All Passed
Dialog	77	77	All Passed
DropDown Button	132	132	All Passed
Dropdown List	217	217	All Passed
Dropdown Tree	127	127	All Passed
File Manager	2197	2197	All Passed
Floating Action Button	174	174	All Passed
Gantt	5968	5968	All Passed
HeatMap Chart	814	814	All Passed
Image Editor	1653	1653	All Passed
In-place Editor	643	643	All Passed
Kanban	335	335	All Passed
LinearGauge	428	428	All Passed
Listbox	115	115	All Passed
ListView	84	84	All Passed
Maps	1399	1399	All Passed
Mention	56	56	All Passed
Menu	187	187	All Passed
Multicolumn Combo Box	262	262	All Passed
Multiselect Dropdown	471	471	All Passed
OTP Input	241	241	All Passed
Pivot Table	5862	5862	All Passed
Progress Bar	108	108	All Passed
Progress Button	132	132	All Passed
Query Builder	480	480	All Passed
RadioButton	45	45	All Passed
RangeNavigator	140	140	All Passed
Rating	198	198	All Passed
Ribbon	632	632	All Passed
Rich Text Editor	5436	5436	All Passed
schedule	4761	4761	All Passed
sidebar	96	96	All Passed
Signature	105	105	All Passed
Skeleton	144	144	All Passed
Slider	147	147	All Passed
SmithChart	49	49	All Passed
Sparkline	58	58	All Passed
Speech To Text	200	200	All Passed
Speed Dial	366	366	All Passed
Split Button	145	145	All Passed
Stepper	92	92	All Passed
Stock Chart	581	581	All Passed
Tab	74	74	All Passed
Text Area	112	112	All Passed
TextBox	69	69	All Passed
Time Picker	180	180	All Passed
Timeline	284	284	All Passed
Toast	140	140	All Passed
Toolbar	142	142	All Passed
ToolTip	140	140	All Passed
TreeGrid	5395	5395	All Passed
Treemap	332	332	All Passed
Treeview	371	371	All Passed

Essential Studio for ASP.NET CORE - v35.1.37 Release Notes

3D Charts

Features

3D Circular Charts

Features

Accumulation Charts

Features

AIAssistView

Features

Charts

Features

Bug Fixes

Dashboard Layout

Features

Grid

Features

File Manager

Features

Form Builder Preview

Features

Form Renderer

Features

GanttChart

Features

Inline AI Assist

Features

MultiSelect

Features

Pivot Table

Features

Breaking Changes

StockChart

Features

Tree Grid

Features

Visual Studio Extensions

Features

Test Results

Form Builder `Preview`