RadListControl and RadDropDownList

Added brand new RadListControl and RadDropDownList controls. Their purpose is to replace the existing RadListBox and RadComboBox controls entirely in the long term. The old controls will still be supported but users are encouraged to use the new ones since they address the fundamental shortcomings of the old controls, namely the slow performance when working with large data sets, lack of a flexible extensibility API and other minor issues.

RadPageView

Added brand new control, successor of RadTabStrip and RadPanelBar. Provides different views over collection of pages. Each page is a stand-alone Panel where controls may be added by Visual Studio’s Designer. The control is fully customizable yet greatly optimized regarding both memory consumption and performance. Currently available views are:

• StripView – encapsulates the TabControl view. A myriad of settings is available, allowing for deep customization of items’ strip and content area. Such settings are:


• StripAlignment – defines the position of the strip. Available are Top, Right, Bottom and Left.
• ItemAlignment – defines alignment of items within the strip. Available are Near, Center and Far.
• ItemFitMode – defines a strategy that will fit items within the strip’s available space. Possible are None, Shrink, Fill, and ShrinkAndFill.
• Item scrolling – when items size is larger user may scroll left or right to view hidden items.
• ItemList menu – displays all opened pages in a drop-down manner.
• CloseButton – allows for closing of the currently selected page.


• StackView – the same as PanelBar’s base view. Items are organized in a stack (either vertical or horizontal oriented) and the content area is either centered or aligned top or bottom.


• The StackView supports two selection modes:


• Standard
• ContentWithSelected


• The StackView supports four position modes for the stacked elements


• Top
• Bottom
• Left
• Right


• OutlookView - the same as the PanelBar’s outlook mode in which items are stacked vertically whereas their content is displayed on top of the stack. Below the items there is an overflow strip which displays the collapsed items and provides an overflow drop-down menu from which the user can modify the item visibility.

Common settings for all views:

• ItemSizeMode – defines conditions for item sizing. Available are Individual, EqualWidth, EqualHeight and EqualSize.
• ItemContentOrientation – defines the orientation of items. Available are Auto, Horizontal, Horizontal180, Vertical90 and Vertical270.
• ItemSpacing – defines the amount (in pixels) between each two items.

RadReminder

• Default alarm form and full customization of it
• Change default alarm from
• Theme for default alarm form
• Full collection of events to manipulate items
• Support for how time before event should notify
• Support for how often check for changes in the collection
• SchedulerReminder component

RadGrid

We redesigned both the UI and the data layer and added several new features:

New data layer - it is generic and we use the same data layer in RadListControl and RadDropDownList. The new data layer is faster and uses less memory.

Virtualized columns - with the new column virtualization RadGridView can bind any number of columns without performance lost. This makes possible various spreadsheet scenarios.

Split grid - the new grid root element supports multiple custom views and split view can be applied by setting one property.

Pinned items - the pinned position of all columns and rows (including the system rows) can be customized. Columns can pin at left or right and rows at top or bottom.

Styling cells - the visual appearance of any cell can be changed by using the Style property, without using an event.

Rows reorder - when RadGridView is used in unbound mode, rows can be reordered by using the mouse.

Drag and drop - with the new build-in drag and drop service it is easy to drag & drop rows between two grids.

Grouping by multiple columns - the new group panel supports grouping by more than one column.

Self referencing - it is easy to present tree-like data with the new self referencing feature by setting just one relation.

IDataError support - RadGridView will reflect automatically all errors indicated by this interface. Another option is setting the cell/row ErrorText property.

Data Conversion - When using business objects, RadGridView will recognize automatically any attached type converter attribute and will use it to convert the data. This enables adopting any incompatible type.

We tried to keep breaking changes at minimum; nevertheless we could not avoid some. Consider the following list:

• Because of the new element hierarchy, your application may not compile if you used the “Element hierarchy editor” or accessed the element tree directly.
• Row cells should be accessed by using the VisualCells property instead of using the Children collection directly.
• The CellElement and VisualElement properties of GridViewCellInfo and GridViewRowInfo respectively are removed. You should use RadGridView.GridElement.GetCellElement/GetRowElement methods.

This is a detailed list of all major changes in the public API:

RadGridView

• Removed: GroupDepth property, it is no longer needed.
• Removed: Obsolete method UpdateGroupPanel.
• Removed: GridScroller property, you should use GridElement.VScrollBar property.
• Removed: SetCurrentRow method, you should use CurrentRow property.
• Removed: OnChildRowsNeeded method, it is no longer needed.

GridViewTemplate

• Removed: obsolete method UpdateSummaries, summaries are updated automatically.
• Removed: obsolete method UpdateGroupPanel, group panel is updated automatically.
• Removed: obsolete property SummaryDisplayStyle, use SummaryRowsTop and SummaryRowsBottom collections.
• Removed: obsolete property RetrieveNullAsDBNull, use GridViewColumn.DataSourceNullValue property.
• Removed: obsolete property OwnerGrid, use Owner property.
• Removed: obsolete property ColumnAutoWidth, use AutoSizeColumnsMode property and BestFit method.
• Removed: obsolete property AllowRowSelection, use properties controlling the selection behavior.
• Removed: ColumnWidthChanging/Changed events and methods, use corresponding RadGridView events.
• Removed: ColumnIndexChanging/Changed events and methods, use Columns.CollectionChanged event.
• Removed: AddGroupByExpression, AddToGroupExpressions, ClearGroupByExpressions, RemoveGroupExpressions and SwitchGroupExpressions methods, use GroupByExpressions property methods.
• Removed:

GridViewInfo

• Removed: obsolete method GetVisibleRow, use Rows[index].
• Removed: obsolete method GetVisibleRowIndex, use Rows.IndexOf method.
• Removed: GridViewElement property, use RootGridElement.FindView method.
• Removed: RowHeightChanged and RowHeightChanging methods, use RadGridView events.
• Removed: RootGroup property, use ViewTemplate property.
• Removed: CurrentGroup property, use GridViewRowInfo.Parent property.

GridViewRowInfo

• Removed: obsolete property ActualHeight, use the Height property.
• Removed: obsolete property GridViewInfo, use the ViewInfo property.
• Removed: VisualElement property, use GridElement.GetRowElement method.

GridViewGroupRowInfo

• Removed: SetGroupExpandedWithAnimation method, in this beta we do not support grouping animations.

GridViewDataRowInfo

• Removed: ChildRow property. Currently when using hierarchy, RadGridView produces GridViewHierarchyRowInfo instances which inherit from GridViewDataRowInfo and contain this property.
• Removed: GroupLevel property. This property can be accessed in GridViewHierarchyRowInfo.

GridViewColumn

• Removed: WidthPercentage property, this property was used internally in old grid versions.
• Removed: Invalidate method, use GridElement.Update methods instead.
• Removed: CellDefinition property, this property was used internally in old grid versions.

GridViewDataColumn

• Removed: obsolete property AllowDragToGroup, use the template property.
• Removed: obsolete property DataField, use the FieldName property.
• Removed: obsolete property DataTextFormatString, use the FormatString property.
• Removed: obsolete property DataTypeIsSet.
• Removed: internally used methods IsBindableType and IsBoundToFieldName.

GridTableElement

• Removed: obsolete properties DrawHorizontalOuterBorder and DrawVerticalOuterBorder
• Removed: HeaderElement, FooterElement and TableBodyElement properties, these elements are no longer part of the element hierarchy.
• Removed: GetRowStyle, GetStyleByTargetElement and SetStyleByTargetElement methods, use the Style property.
• Removed: various update methods: InvalidateColumn, InvalidateColumnWidths, UpdateColumns, UpdateCurrentColumn, and UpdateCurrentPosition. All updates are now automatic. You can use the Update and UpdateView methods to explicitly update GridTableElement.
• Removed: RowsEnumerator property, create GridTraverser instance instead.

GridRowElement

• Removed: UpdateColumns, UpdateStyle and CreateCells methods.
• Removed: GetPinnedState method, use RowInfo.PinPosition property.
• Removed: ViewDefinition property, use ViewTemplate.ViewDefinition property.
• Removed: BodyElement property, it is no longer part of the element hierarchy.

GridCellElement

• Removed: obsolete property IsReadOnly, use GridViewColumn.ReadOnly property.
• Removed: BodyElement property, it is no longer part of the element hierarchy.

BaseGridBehavior

• Removed: all methods that handle specific keys. Use ProcessKey method instead.

BaseGridNavigator

• Changed: excluded key specific arguments from row and column selection methods.

RadDesktopAlert

The RadDesktopAlert is a new component that can be used to show a small popup on the screen to inform the user about an event in the application. This component fully supports the Telerik Presentation Framework, i.e. it can be styled in the Visual Style Builder. The RadDesktopAlert exposes a convenient API that can be used to customize the behavior of the component. Among the most important features of this component are:

• Multiple-monitor support
• Screen alignment customization
• Auto-close functionality
• Pinning functionality
• HTML –like text rendering
• Fade and bounds animations
• Content customization
• Styling
• Sound playback

The RadDesktopAlert is part of the Telerik RadControls for WinForms suite and is available from the Visual Studio Toolbox.

RadMultiColumnComboBox

• ADD: Support for filtering based on multiple columns.
• FIX: When AutoFilter is enabled and the user types in text and presses enter without explicitly selecting an item from the available items, the popup is closed, the text is updated but the filter is not cleared.

Visual Style Builder

• FIX: Collection modified exception in certain cases when opening themes.
• ADD: Improvements in the Parent-Child selector generation routines.
• ADD: Support for different Style Builder Registrations per single control metadata.

RadRibbonBar

• FIX: Issue in the logic that collapses/expands elements in RadRibbonBarGroups when shrinking/expanding the control. This issue caused images disappear and also prevented small images from being shown correctly.