Telerik UI for WinForms R2 2018 SP1 (version 2018.2.621) Retail

Telerik UI for WinForms includes more than 90 user interface controls you can use to fulfill the most demanding desktop or tablet application requirements. All-way customizable GridView, Form, Chart, Scheduler, RichTextBox and other essential controls enable you to build any Line of Business or Modern application in less time while staying under budget.

All Telerik Windows Forms controls come with full theme support. You can use any of the 19 included themes (Windows 8, Office 2013, Visual Studio 2012), or build new ones with the intuitive and unique Visual Style Builder tool. The built-in themes help you effortlessly deliver sleek and consistent, next-generation user experiences across your desktop and tablet applications.

Despite having animations and rich visual effects, Telerik UI for WinForms controls feature excellent performance aimed at helping developers like you improve your productivity and deliver better and faster applications in less time.
UI for WinForms enables easy development of complex, high-performing apps by:

Minimizing the amount of required repainting and layout rearrangements
Empowering all data controls with a data engine guaranteeing blazing-fast data loading and updates
Allowing you to exercise fine-grained control over the component’s appearance and behavior using simple CSS-like syntax
Setting attractive defaults for controls supplied by the Telerik Presentation Framework
Providing easy integration with CAB and its underlying infrastructure

UI for WinForms R2 2018 SP1 (version 2018.2.621)

RadScheduler NEW

Option to specify how the appointments are sorted in month view.


Size is increased when reopening the designer and a Material theme is applied.

RadCalendar FIXED

The row headers border is still visible if the ShowOtherMonthsDays property is set to false in the VisualStudio2012LightTheme.

RadChartView NEW

Implement LassoSelection controller.


Incorrect points are selected with the LassoSelectionController.

RadCheckedDropDownList FIXED

ArgumentOutOfRangeException when you dock the control inside TableLayoutPanel.

RadCommandBar FIXED

Exception when removing an item and loading the layout.

RadDateTimePicker FIXED

The PM/AM part is changed when pressing non-numeric key in the hour part. Time part is not selected any more with the mouse once the AM/PM part has been selected.

RadDiagram FIXED

Add an option to change the default RadDiagramShapes with custom ones.

RadDropDownList FIXED

SelectedIndexChanging event is fired multiple times when you use MouseWheel and cancel the event. Incorrect selection of items with duplicated text but different values when opening and closing the popup with the keyboard. The selected index is not cleared when the SelectedValue does not exists in the data source.

RadGanttView FIXED

Exception when TimelineRange is DayHalfHours and the range is smaller than one day.

RadGridView FIXED

ViewChanged event is not fired when single group is expanded. NullReferenceException when GridViewCheckBoxColumn.EnableHeaderCheckBox is true for the child template and the master level is self-reference. The AlternatingRowColor is wrong when some rows are styled. Having groups, filters, sort descriptors and search query in the GridViewSearchRowInfo may leave the grid in an invalid state. Visible rows are not checked in the filter popup of the Excel-like filtering. Wrong parts of the text are highlighted by the search functionality if you type extremely fast. The GridViewSpreadStreamExport class and its RunExportAsync method may result in incorrect exported cells of a decimal column with a custom ExcelExportType. The column chooser is not scaled with application that support HDPI. Property Builder is closed automatically when you change to ColumnsGroupViewDefinition for the child template. Indicate errors example shows incorrect red border around a valid value.

RadGroupBox FIXED

Set shape to the header is not applied properly.

RadLayoutControl FIXED

Define a back color set on the RootElement in the Windows8 theme.

RadMap NEW

Add ViaWaypoints support. Add option to create custom tile elements in the MapVisualElementFactory. LocalMapProvider should allow specifying the TileSize.

RadMaskedEditBox NEW

Add a property that indicates whether all required inputs have been entered into the input mask (MaskCompleted ).

RadMultiColumnComboBox FIXED

When added to a TableLayoutPanel and the Dock property is set to Fill, the control is shrunk.

RadPdfViewer FIXED

Loading new document while loading operation is still pending should stop the current operation and start the new one. The Highlighted path is painted over the text and the text is not visible.

RadPopupEditor FIXED

The popup is incorrectly sized when the DropDownSizingMode is set to none.

RadPropertyGrid FIXED

Title in the help element is hidden when you set the HelpElement.MinSize property. Unhandled exception in the control if you try to create a Font object with a negative size. RadRange attribute is not respected.

RadRibbonBar FIXED

Tabs cannot be switched with a single click at design time.

RadRichTextEditor FIXED

Missing localization strings for some parts of the UI. The text is unreadable with the FluentDark theme. Fluent theme is not properly applied to the RichTextEditorRibbonBar. InsertCaptionDialog shows “radRichTextEditor1” text in the textbox. Inserting a large image exceeding the bounds of the viewport in the DocumentLayoutMode.Flow should display the horizontal scrollbar. NullReferenceException is thrown when calling PrintPreview after an watermark is inserted in web layout mode. PrintPreview dialog is automatically closed if you added a watermark in web layout mode. Exception in an Office Add-in environment while importing an HTML document with images loaded from URLs.

RadSpellChecker FIXED

The standard ContextMenuStrip is not shown after performing a spellcheck with the control.

RadSpinEditor FIXED

The CausesValidation property set on the control should propagate to the internally hosted text box.

RadTextBox FIXED

The text box is not resized according to the font when it is placed inside TableLayoutPanel at design time.

RadTextBoxControl FIXED

NullText should be shown even if the control is focused and the text is empty.

RadTreeView NEW

Add the option to add a root node via the context menu. RadBreadCrumb – expose a new mode which will perform a selection in the associated tree view upon clicking on the action part of the split button.


The HideSelection property doesn’t work. Auto-scroll is not working while dragging a node. RadTreeNode.TreeView is null for the nested nodes. The filter predicate should be called on all nodes in the tree when custom filtering is used.

Trackbar FIXED

RadTrackBar – the TrackBarRangeElement should be painted black in the TelerikMetro theme in the MouseOver element state when the control is oriented vertically.

UI for Winforms FIXED

RadChat and RadImageEditor – links to the documentation in the smart tag`s action list and in the QSF examples are not redirecting correctly.


Visual Style Builder should be made DPI-aware.

SpreadProcessing FIXED

Pasted value has incorrect formatting when the source has formatting on the entire column.

PdfProcessing NEW

Implemented logic to handle invalid PDF documents which content streams contain concatenated “q” and “Q” graphic state operators.


Transparency is lost on import when the graphic state does not specify the alpha source. Corrupted document after export because of missing FunctionType PDF property. InvalidCastException when importing DeviceN color with integer components.

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