Telerik UI for WinForms R3 2018 SP1 (version 2018.3.1016) 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 R3 2018 SP1 (version 2018.3.1016)


Add Bookmarks support in the PDFViewer. PDF files that have bookmarks in them will contain a table-of-contents like navigation.


“A general error occurred in GDI+” when loading a pdf file.

RadBarcode FIXED

The ForeColor property set to the control should propagate to the main element.

RadBrowseEditor FIXED

Clear button is not shown when you set the BrowseElement.ShowClearButton property true.

RadChartView FIXED

Improve the VerticalAdjusmentLabelsStrategy of the smart labels in the BarSeries so that it avoids collisions with the bar data point.

RadCheckedDropDownList FIXED

NullReferenceException when refilling items while the autocomplete popup is opened.

RadCommandBar FIXED

Visual Studio crashes when you add a button in the designer while the application is running. CommandBarMaskedEditBox – the mask cannot be set at design time.

RadDateTimePicker FIXED

Incorrect style for the drop down when the ThemeName is set and then RadDateTimePickerCalendarShowTimePicker is enabled.

RadDropDownList FIXED

Clear button is not visible in the editable part for RadDropDownList and RadMaskedEditBox. InvalidOperationException (“Cross-thread operation not valid”) when adding a RadDropDownList to the Form.Controls collection in the BackgroundWorker.RunWorkerCompleted event.

RadGridView NEW

Add caption.


The changes are not committed to the data set when the new row is focused. Expander item overlaps with the hyperlink cell’s text in a self-reference grid. Performance in the BestFitHelper needs to be improved when the grid is in SelfReference. The format of the column is not respected when using nullable DateTime. Header checkbox does not uncheck the rows when grouping is used. New row is added even when the validation is canceled. When IsSearchAsync is false the navigation keys work differently. When IsSearchAsync is false the waiting bar does not stop after the search is finished.


Performance of the GridViewCheckBoxColumn when the header checkbox is toggled and the column is sorted.

RadLayoutControl FIXED

The group items should expose Expanded/Expanding and Collapsed/Collapsing events.

RadListView FIXED

Searching with text starting with similar letters doesn’t navigate you to the correct item.


The arrow is not updated when the items are cleared. Items are selected when disabled.

RadMultiColumnComboBox NEW

Add ability to display focus cues when DropDownStyle = DropDownList.


RadMultiColumnCombobox – control is shrunk when the DropDownStyle is set to DropDownList and the text is empty.

RadPageView NEW

Navigation View should offer public properties for enabling/disabling the animation.


Visual Studio hangs when adding children to the StripViewItemLayout via the Edit UI Elements. Add collapsing/expanding events to the navigation view. Incorrect layout in RightToLeft mode with Navigation View.

RadPivotGrid FIXED

NullReferenceException when setting the data source of the control to null.

RadPopupEditor FIXED

TextChanged event is not fired when you type in the editable part.

RadPropertyGrid NEW

Add three-state functionality for the PropertyGridCheckBoxItemElement.


The ValueChanged event cannot be fired from custom editor.

RadSpinEditor FIXED

Setting the TabStop property on the control should propagate to the hosted text box.

RadSpreadsheet FIXED

The font/size of the first cell is changed when setting the associated ribbon bar.

RadTextBox FIXED

Incorrect control’s bounds when manipulating the AutoSize property at design time.

RadTreeView FIXED

Filtering doesn’t show the correct results. ToggleStateTypeConverter should handle converting from/to System.Windows.Forms.CheckState as well.

RadVirtualGrid FIXED

The pinned rows do no have any styles in Material themes. Current page index is not updated in the VirtualGridPagingPanelElement when the rows are cleared.


Font set with a GraphicsUnit.Pixel is measured and painted as with GraphicsUnit.Point. RadScrollBarElement – the default value of the MinThumbLength property should be increased in the touch themes.

UI for Winforms FIXED

StackLayoutElement should respect the Visibility of the elements when arranging them.

WordsProcessing FIXED

DocxFormatProvider: NullReferenceException is thrown while importing hyperlink without runs.

PdfProcessing NEW

Implement import and export for “W*” clipping operator. Implemented import for “b” geometry operator.


InvalidCastException is thrown while importing font descriptor used by different types of fonts. NullReferenceException is thrown when importing document with XFA fields. Invoking ToString() of a PdfHexString containing empty string leads to IndexOutOfRangeException.

SpreadProcessing FIXED

ArgumentException is thrown when exporting characters not supported in XML.

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