2026 v1

Chart

Bug Fixes

• Fixed an issue where FlexPie data labels did not render correctly.

Core

Bug Fixes

• Fixed an issue where bindings failed when the ItemsSource property in C1ItemsControl was hidden by using the new modifier.

• Fixed an issue where the core value access function threw an AmbiguousMatchException when the target type defined multiple default properties.

FlexViewer

Bug Fixes

• 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

Bug Fixes

• Fixed an issue where out-of-range StartAngle and SweepAngle values caused rendering to freeze.

• 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.

• Fixed an issue where mark decorators overlapped due to 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

Breaking Changes

• Removed AutomationEnabledProperty. AutomationEnabled is now implemented as a CLI property.

• Updated the CanDragRow and CanDragColumn method signatures in GridCellFactory to accept four parameters.

Improvements

• Added support for clearing cell values when deselecting a ComboBox editor in a nullable DataMap column.

• Added the Offset property to GridDateTimeOffset.

• Improved column auto-generation to create GridDateTimeColumn objects for date and time data types.

• Added IAutomationProperties interface support.

• Added nullable Boolean support for AutomationEnabled.

Bug Fixes

• 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 filtered results displayed incorrectly after editing a merged cell value from the column options menu.

• 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 was not canceled when the Cancel property was set to true in the BeginningEdit or BeginningRowEdit events.

Grid.Excel

Bug Fixes

• Fixed an issue where export failed because of a DS.Documents.Excel dependency version mismatch. Updated the referenced version to 7.2.5.

GridControl

Bug Fixes

• Fixed an issue where layout values exceeded valid bounds by enforcing value clamping.

Input

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().

Improvements

• Added the C1AutoCompleteTextBox.Complete() method.

Bug Fixes

• 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.

ListView

Breaking Changes

• Removed the ShowCaption visual state group and renamed the Caption template to SelectAll.

• Removed the unused ViewportGap and ViewportPreviewGap properties.

Improvements

• Added a new ListView library.

• Added IAutomationProperties support to ListView.

• Improved UI automation support.

Bug Fixes

• 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.