Released: Jun 3, 2026

Updates in 2026 v1

Features

• Gauge
  • Improved gauge decorator styling consistency by moving BorderBrush, BorderWidth, and BorderDashes properties to the base GaugeDecorators class.
  • Removed the StrokeThickness property from GaugePointer and GaugeMark.
  • Added shared JavaScript code to the Core library.
• Grid
  • Added support for the default browser context menu when FlexGrid.ShowSelectionMenu is set to false.
  • Added the Offset property to GridDateTimeOffset.
  • Improved column auto-generation to create GridDateTimeColumn objects for date and time data types.
  • Added hover style support through the MouseOverBrush and MouseOverMode properties.
  • Added support for clearing cell values when deselecting a ComboBox editor in a nullable DataMap column.
• Input
  • Added the C1AutoCompleteTextBox.Complete() method.
• ListView
  • Improved UI automation support.

Fixes

• Core
  • Fixed an issue where the core value access function threw an AmbiguousMatchException when the target type defined multiple default properties.
• FlexViewer
  • Fixed an issue where the application stopped responding when the PopupCard icon was clicked in FlexViewerExplorer on Android using Visual Studio 2026.
  • Fixed an issue where a System.Exception occurred when loading report data with parameters on mobile platforms.
  • Fixed an issue where a System.Exception occurred when loading report data containing charts on mobile platforms.
  • Fixed an issue where chart data did not render when loading report data containing charts on mobile platforms.
• Gauge
  • Fixed an issue where the default gauge pointer color changed from previous builds.
  • Fixed an issue where Value and Max text did not render correctly when the StartAngle and SweepAngle properties were set to non-default values.
  • Fixed an issue where LinearGauge and BulletGraph displayed inconsistent height and text clipping compared to previous builds.
  • Fixed an issue where out-of-range StartAngle and SweepAngle values caused rendering to freeze.
  • Fixed an issue where mark decorators overlapped because of collisions in the marks implementation.
  • Fixed an issue where the OnValueChanged and ValueChanged events did not trigger when values were updated.
  • Fixed an issue where values greater than 87 returned NaN when IsReversed was enabled.
• Grid
  • Fixed an issue where opening column option menus in TransposedGrid threw a System.ArgumentOutOfRangeException when all rows were frozen and AutomationEnabled=True.
  • Fixed an issue where assigning the CellFactory property failed when the factory was already linked.
  • Fixed an issue where adding multiple columns through XAML caused a System.ArgumentOutOfRangeException.
  • Fixed an issue where drag-and-drop row reordering failed when TransposedGridBehavior was applied.
  • Fixed an issue where incorrect adapter dimensions caused row ActualHeight values to report incorrect sizes.
  • Fixed an issue where selecting Sort By from the sort drop-down triggered a System.ArgumentOutOfRangeException.
  • Fixed an issue where resizing or scrolling in a secondary XAML window threw a System.ArgumentOutOfRangeException when AutomationEnabled=True and TransposedGridBehavior was applied.
  • Fixed an issue where DataMap drop-down items in GridColumn did not populate when edit mode was entered by double-clicking a cell.
  • Fixed an issue where selecting Apply or Clear in GridFilterRow options caused a NullReferenceException.
  • Fixed an issue where accessing CellFactory and PropertyInfo on unattached columns caused a NullReferenceException.
  • Fixed an issue where mouse wheel scrolling caused a System.ArgumentOutOfRangeException.
  • Fixed an issue where setting Aggregate and Format on DateTime columns with GridSummaryRow caused exceptions.
  • Fixed an issue where grouping and aggregation failed with FlexGridDetailProvider. Group collapse and aggregate calculations were applied only to the first row in each group.
  • Fixed an issue where checkbox editing could not be canceled when the Cancel property was set to true in the BeginningEdit or BeginningRowEdit events.
  • Breaking Changes
    • Updated the CanDragRow and CanDragColumn method signatures in GridCellFactory to accept four parameters.
• Grid.Excel
  • Fixed an issue where export failed because of a DS.Documents.Excel dependency version mismatch. Updated the referenced version to 7.2.5.
• GridControl
  • Fixed an issue where layout values exceeded valid bounds by enforcing value clamping.
  • Fixed an issue where custom tab navigation did not work correctly when merged cells were used.
• Input
  • Fixed an issue where items in C1ComboBox and C1AutoComplete could not be deselected when clearing the text box.
  • Fixed an issue where text matching failed in C1ComboBox when Condition=Contains and IsEditable=False.
  • Fixed an issue where a System.Exception occurred when a reset notification was received from the data source.
  • Breaking Changes
    • Removed the HeaderClickInterceptor and ComboHeader template parts. Replaced them with Header and TextBox.
    • Renamed C1ComboBoxSelectionMode to ComboBoxSelectionMode.
    • Renamed C1ComboBoxItem and C1ComboBoxGroupItem to ComboBoxItem and ComboBoxGroupItem.
    • Removed C1ComboBox.IsOpenKey().
• ListView
  • Fixed an issue where navigating suggestions in ExpressionEditor with the Down arrow key caused an InvalidOperationException when scrolling reached the next visible view.
  • Fixed an issue where newly added ListViewItem content did not render when added through the Items collection editor while C1ListView was bound to C1PropertyGrid.
  • Fixed an issue where the Select All checkbox remained enabled even when CanSelectAll was set to false.
  • Fixed an issue where selection failed when IsSelected was set before the item was added to the Items collection.
  • Fixed an issue where SelectedIndex set in XAML was not applied when ItemsSource was assigned later.
  • Fixed an issue where deselection in SelectionMode=Multiple did not clear selected items.
  • Fixed an issue where PageUp and PageDown navigation caused a System.ArgumentOutOfRangeException after runtime data source updates.
  • Fixed an issue where the automation peer threw exceptions when accessing non-visible items.
  • Fixed an issue where ItemTemplate was applied incorrectly to grouped items when no GroupStyle was defined.
  • Breaking Changes
    • Removed the ShowCaption visual state group and renamed the Caption template to SelectAll.
    • Removed the unused ViewportGap and ViewportPreviewGap properties.
• Ribbon
  • Fixed an issue where SelectTool had inconsistent selection behavior by using a single source of truth for SelectedIndex and SelectedItem, with SelectedIndex taking precedence when specified.
  • Breaking Changes
    • Removed the setter for C1ToolSeparator.Orientation. The property is now read-only.