Syncfusion Essential Studio Windows Forms

A comprehensive UI controls package for WinForms.

Published by Syncfusion
Distributed by ComponentSource since 2002

Version: 2026 Volume 1 SP1 (33.2.5) NEW Updated: May 5, 2026 5.00 Star Average Review5.00 Star Average Review5.00 Star Average Review5.00 Star Average Review5.00 Star Average Review (4)

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Please note that new Timed Subscription Licenses for Syncfusion Essential Studio Windows Forms are available as part of Syncfusion Essential Studio Enterprise.

Syncfusion Essential Studio Windows Forms Releases

Released: May 5, 2026

Updates in 2026 Volume 1 SP1 (33.2.5)

Fixes

  • Calculate
    • An issue related to the greater than or equal operator returned incorrect results when comparing exponential and double values in CalcEngine has been fixed.
    • An issue related to incorrect formula value reuse for dynamic array and context-dependent formulas in CalcEngine has been fixed.
    • Improved calculation performance for duplicate cell recalculation by optimizing dependency refresh logic, resulting in ~60% faster execution and reducing calculation time from ~40–50 seconds to...
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Released: Apr 28, 2026

Updates in 2026 Volume 1 SP1 (33.2.4)

Fixes

  • ScheduleControl
    • System.ObjectDisposedException no longer occurs when an appointment is randomly moved and opened in the WorkWeek view.

Released: Apr 21, 2026

Updates in 2026 Volume 1 SP1 (33.2.3)

Features

  • Calculate
    • Improved calculation speed for repeated range updates. CalcEngine now processes frequently updated used ranges more efficiently, delivering 50-63% faster performance and reducing calculation time from approximately 30 seconds to 15-19 seconds.
    • Significantly faster recalculation of repeated formulas. Optimizations to how identical formulas are recalculated across cells result in up to 94% faster performance, reducing calculation time from around 9 minutes to approximately...
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Released: Apr 14, 2026

Updates in 2026 Volume 1 (33.1.49)

Fixes

  • Calculate
    • An issue related to the TEXT formula returns incorrect result when using time values with custom format in CalcEngine has been fixed.
    • An issue related to the IF formula returning incorrect results when using arithmetic operator across multiple IF formulas in CalcEngine has been fixed.

Released: Apr 7, 2026

Updates in 2026 Volume 1 (33.1.47)

Fixes

  • Calculate
    • An issue related to the INDIRECT and SUMIFS formulas which returned #NAME? error string when used as interior formulas in CalcEngine has been fixed.
  • PivotGrid
    • Now, a StackOverflowException will no longer be thrown when filtering columns in PivotGridControl that is bound to a DataTable with EnableUpdating set to true.
    • Now , the first row and first column are now displayed correctly in the Print Preview when the PrintColumnToFitPage property is enabled in PivotGridControl.

Released: Mar 31, 2026

Updates in 2026 Volume 1 (33.1.46)

Fixes

  • TreeViewAdv
    • Now the DragNodeCue image is correctly drawn for all dragged nodes beside the cursor, instead of showing only the last selected node when dragging multiple nodes with ShowDragNodeCue enabled in TreeViewAdv.

Released: Mar 16, 2026

Updates in 2026 Volume 1 (33.1.44)

Features

  • AI AssistView
    • The WinForms AI AssistView control now provides an interface for integrating conversational AI services into Windows Forms applications. Key features include:
      • Suggestions.
      • Typing indicator.
      • Banner customization.
      • Theme support.
  • Calculation Engine
    • Optimized formula engine for faster calculations - The core processes have been refined to significantly accelerate formula evaluation across large worksheets.
      • Faster SUMPRODUCT calculations - The performance of worksheets using...
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Released: Mar 10, 2026

Updates in 2025 Volume 4 SP1 (32.2.9)

Fixes

  • Calculate
    • An issue related to the addition operation between two formula cells in CalcEngine has been fixed.

Released: Mar 3, 2026

Updates in 2025 Volume 4 SP1 (32.2.8)

Fixes

  • Calculate
    • An issue related to the Equal operator returning incorrect result when comparing equivalent values in string and numeric formats in CalcEngine has been fixed.
    • An issue related to the INDIRECT formula returning a #VALUE! error when an inner formula produced an invalid result in CalcEngine has been fixed.
    • An issue related to nested IFERROR formulas incorrectly producing a #NAME? error in CalcEngine has been fixed.
    • An issue related to the IFERROR formula returning incorrect result...
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Released: Feb 24, 2026

Updates in 2025 Volume 4 SP1 (32.2.7)

Fixes

  • Calculate
    • An issue related to the SUM formula returning an incorrect result when the argument contained an invalid range in CalcEngine has been fixed.
  • PivotGrid
    • The PivotGridControl now updates its GridVisualStyles correctly without overriding the styles of the parent form's GridControl or GridGroupingControl when the ShowPivotTableFieldList property is enabled.