ComponentOne Studio WinForms Releases

MESCIUSUI & Visualization Suites.NET
Version 2026 v1 (Jun 3, 2025)(16)

Learn what's new across releases, with details of features, enhancements, and resolved issues.

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ComponentOne Studio WinForms 2026 v1Major versionJun 3, 2026
Features
  • Calendar Improvements
    • Added the GetSelectedDateRange method to C1DateRangeEdit to retrieve the selected date range based on the current culture calendar.
    • Added the C1DateRangeEdit control to display and edit date ranges through a drop-down editor.
  • Command Improvements
    • Added a design-time text editor for page tabs in C1DockingTabPage.
  • FlexChart Improvements
    • Updated C1.Chart to version 10.0.20261.78.
  • FlexGrid Improvements
    • Added support for hiding empty groups and subtotals during filtering through the HideEmptyGroups property.
  • FlexReport Improvements
    • Added Radar Chart field support.
    • Added Diagram Chart field support.
  • FlexViewer Improvements
    • Added Pane.PagePointerEvent.
  • GanttView Improvements
    • Added StorageEditor editors for TasksStorage, ResourceStorage, PropertyStorage, and CalendarStorage properties at design time.
  • Input Improvements
    • Added Command and CommandParameter properties to support command binding and separation of UI logic through the Command pattern for the following controls:
      • C1NumericEdit.
      • C1RangeSlider.
      • C1DropDownControl.
      • C1ComboBox.
      • C1TextBox.
      • C1MaskedTextBox.
      • C1ToggleSwitch.
Fixes
  • Calendar
    • Fixed an issue where the selected date range did not render correctly in the C1DateRangeEdit drop-down calendar when SyncValueWithSelection=True.
    • Fixed an issue where the selected date did not appear in the drop-down calendar when copied and pasted into C1DateEdit.
    • Fixed an issue where the DateRangeSelected event did not trigger when selecting a date range in the C1DateRangeEdit drop-down calendar.
    • Fixed an issue where the C1DateRangeEdit drop-down calendar closed after selecting disabled dates.
    • Fixed an issue where the time component was lost when selecting a date from the C1DateEdit drop-down calendar even when RetainTimeOnDateChange=True.
    • Fixed an issue where font formatting did not reset correctly when calling ResetFont in the DayFormatting event of C1DateEdit after selecting a day.
    • Fixed an issue where PredefinedRange styles were reset at design time after closing and reopening the form.
  • Document
    • Fixed an issue where C1PdfDocumentSource rendered output as rasterized content instead of vector graphics, reducing print quality.
  • Editor
    • Fixed an issue where calling LoadDocumentAsync or LoadDocumentRequestAsync before C1EditorReady could cause document loading failures.
  • ExpressionEditor
    • Fixed a performance issue in ExpressionEditorCollection for control integration during expression evaluation.
  • FlexChart
    • Fixed an issue where FlexPie data labels did not render correctly.
    • Fixed an issue where FlexRadar threw a System.InvalidCastException when RenderMode=DirectX and RadarChartType=Column.
    • Fixed an issue where a System.NullReferenceException occurred when deleting a series at design time while an empty BindingSource was assigned as the data source.
  • FlexGrid
    • Fixed an issue where changing views in the ThemeDesigner application caused an extra window to appear behind the form when opening the filter drop-down.
    • Fixed an issue where clearing a filter after clearing the Select All checkbox in C1TableView threw a System.ArgumentOutOfRangeException.
    • Fixed an issue where binding a DataTable displayed incorrect items in the ComboBox drop-down list.
    • Fixed an issue where MaxDropDownItems for GridEditorComboBox stopped applying beyond a certain limit.
    • Fixed an issue where dragging a column duplicated its contents on another screen.
    • Fixed a performance issue when loading Excel files containing a large number of empty rows.
    • Fixed an issue where AutoSizeRows did not support TextDirection.Down.
    • Fixed an issue where changing the DropDownStyle of GridEditorComboBox degraded drop-down opening performance.
  • FlexPivot
    • Fixed an issue where scrolling a numeric editor in the Custom tab of the ColorPicker drop-down threw a System.ArgumentException.
  • FlexReport
    • Fixed an issue where Map custom fields failed to render in both C1FlexReportDesigner and C1FlexViewer.
  • Input
    • Fixed an issue where C1NumericEdit did not trigger validation from SpinUp and SpinDown when the editor did not have focus.
    • Fixed an issue where internal text editors mishandled keyboard input when receiving system messages before rendering.
    • Fixed an issue where C1MultiSelect displayed both the selected item and the last item in the header when using a space separator with DisplayMode=Text and SelectionMode=Extended.
  • PrintPreview
    • Fixed an issue where generating a C1MultiDocument with multiple C1PrintDocument objects threw a System.Exception.
  • Ribbon
    • Fixed an issue where the Ribbon flickered during resizing in a remote desktop environment.
  • Themes
    • Fixed an issue where theme font merging ignored the Unit property when combining component and theme fonts.
  • TrueDBGrid
    • Fixed an issue where the filter drop-down in C1TrueDBGrid displayed raw values instead of translated values when using C1TrueDBDropDown with ValueTranslate=True.
  • WinForms (General)
    • Fixed an issue where DropDownForm assigned an incorrect owner when the parent IDropDownOwner was the DropDownHolder of PropertyGridInternal.
    • Fixed an issue where the C1ToggleSwitch.Toggle method executed even when the control was disabled.