Class
GridViewColumnChooser

Displays a form used to manage columns

Definition

Namespace:Telerik.WinControls.UI

Assembly:Telerik.WinControls.GridView.dll

Syntax:

cs-api-definition
public class GridViewColumnChooser : RadForm, IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, IContainerControl, IComponentTreeHandler, ILayoutHandler, ISupportInitializeNotification, ISupportInitialize, INotifyPropertyChanged, IAnalyticsProvider

Inheritance: objectMarshalByRefObjectComponentControlScrollableControlContainerControlFormRadFormControlBaseRadFormGridViewColumnChooser

Implements: IAnalyticsProviderIBindableComponentIComponentIComponentTreeHandlerIContainerControlIDisposableIDropTargetILayoutHandlerINotifyPropertyChangedISupportInitializeISupportInitializeNotificationISynchronizeInvokeIWin32Window

Inherited Members RadForm.ScrollToControl(Control)RadForm.EndInit()RadForm.ProcessCaptureChangeRequested(RadElement, bool)RadForm.InitializeFormBehavior()RadForm.SetIconPrimitiveVisibility(bool)RadForm.TextRadForm.ThemeClassNameRadForm.FormElementRadForm.IconScalingRadForm.AllowThemingRadForm.ShowIconRadFormControlBase.newBoundsRadFormControlBase.oldDpiRadFormControlBase.currentDpiRadFormControlBase.isBehaviorPreparedRadFormControlBase.controlIsInitializingRootComponentRadFormControlBase.isPaintingRadFormControlBase.Construct()RadFormControlBase.OnCreateControl()RadFormControlBase.LoadElementTree()RadFormControlBase.LoadElementTree(Size)RadFormControlBase.OnLoad(Size)RadFormControlBase.OnPaint(PaintEventArgs)RadFormControlBase.OnPaintBackground(PaintEventArgs)RadFormControlBase.ProcessDialogKey(Keys)RadFormControlBase.UpdateDefaultButton()RadFormControlBase.OnBackColorChanged(EventArgs)RadFormControlBase.OnForeColorChanged(EventArgs)RadFormControlBase.OnFontChanged(EventArgs)RadFormControlBase.OnParentChanged(EventArgs)RadFormControlBase.ShouldSerializeProperty(RadProperty)RadFormControlBase.ResetFormBehavior(bool)RadFormControlBase.WndProc(ref Message)RadFormControlBase.PerformDesignModeLocationCorrection(ref Message)RadFormControlBase.CallBaseWndProc(ref Message)RadFormControlBase.ProcessFocusRequested(RadElement)RadFormControlBase.OnNotifyPropertyChanged(string)RadFormControlBase.OnNotifyPropertyChanged(PropertyChangedEventArgs)RadFormControlBase.CreateChildItems(RadElement)RadFormControlBase.CreateRootElement()RadFormControlBase.OnThemeNameChanged(ThemeNameChangedEventArgs)RadFormControlBase.OnThemeChanged()RadFormControlBase.OnDisplayPropertyChanged(RadPropertyChangedEventArgs)RadFormControlBase.OnToolTipTextNeeded(object, ToolTipTextNeededEventArgs)RadFormControlBase.OnHandleCreated(EventArgs)RadFormControlBase.OnVisibleChanged(EventArgs)RadFormControlBase.OnAutoSizeChanged(EventArgs)RadFormControlBase.OnLayout(LayoutEventArgs)RadFormControlBase.CreateHandle()RadFormControlBase.SetClientSizeCore(int, int)RadFormControlBase.SetBoundsCore(int, int, int, int, BoundsSpecified)RadFormControlBase.GetPreferredSize(Size)RadFormControlBase.InvalidateIfNotSuspended()RadFormControlBase.InvalidateElement(RadElement)RadFormControlBase.InvalidateElement(RadElement, Rectangle)RadFormControlBase.AddInvalidatedRect(Rectangle)RadFormControlBase.SuspendUpdate()RadFormControlBase.ResumeUpdate()RadFormControlBase.ResumeUpdate(bool)RadFormControlBase.RegisterHostedControl(RadHostItem)RadFormControlBase.UnregisterHostedControl(RadHostItem, bool)RadFormControlBase.OnScreenTipNeeded(object, ScreenTipNeededEventArgs)RadFormControlBase.ControlThemeChangedCallback()RadFormControlBase.InvokeLayoutCallback(LayoutCallback)RadFormControlBase.BeginInit()RadFormControlBase.ScaleControl(SizeF, BoundsSpecified)RadFormControlBase.SuspendDpiScaling()RadFormControlBase.ResumeDpiScaling()RadFormControlBase.OnWm_SettingChange(Message)RadFormControlBase.SiteRadFormControlBase.EnableAnalyticsRadFormControlBase.IsLoadedRadFormControlBase.MaximumSizeRadFormControlBase.MinimumSizeRadFormControlBase.FormBorderStyleRadFormControlBase.FormBehaviorRadFormControlBase.BehaviorRadFormControlBase.SmallImageListRadFormControlBase.FocusedElementRadFormControlBase.AllowShowFocusCuesRadFormControlBase.ShowItemToolTipsRadFormControlBase.CommandBindingsRadFormControlBase.EnableKeyMapRadFormControlBase.WindowsSettingsRadFormControlBase.BackColorRadFormControlBase.ForeColorRadFormControlBase.FontRadFormControlBase.CreateParamsRadFormControlBase.IsDesignModeRadFormControlBase.ElementTreeRadFormControlBase.ThemeNameRadFormControlBase.RootElementRadFormControlBase.IsUpdateSuspendedRadFormControlBase.ImageListRadFormControlBase.SmallImageScalingSizeRadFormControlBase.ImageScalingSizeRadFormControlBase.IsInitializedRadFormControlBase.IsPerformingScaleRadFormControlBase.HasOwnToolbarRadFormControlBase.IsDpiScalingSuspendedRadFormControlBase.ThemeNameChangedRadFormControlBase.ToolTipTextNeededRadFormControlBase.ScreenTipNeededRadFormControlBase.InitializedRadFormControlBase.PropertyChangedRadFormControlBase.WindowsThemeChangedForm.SetVisibleCore(bool)Form.Activate()Form.ActivateMdiChild(Form)Form.AddOwnedForm(Form)Form.AdjustFormScrollbars(bool)Form.Close()Form.CreateControlsInstance()Form.DefWndProc(ref Message)Form.ProcessMnemonic(char)Form.CenterToParent()Form.CenterToScreen()Form.LayoutMdi(MdiLayout)Form.OnActivated(EventArgs)Form.OnBackgroundImageChanged(EventArgs)Form.OnBackgroundImageLayoutChanged(EventArgs)Form.OnClosing(CancelEventArgs)Form.OnClosed(EventArgs)Form.OnFormClosing(FormClosingEventArgs)Form.OnFormClosed(FormClosedEventArgs)Form.OnDeactivate(EventArgs)Form.OnEnabledChanged(EventArgs)Form.OnEnter(EventArgs)Form.OnHandleDestroyed(EventArgs)Form.OnHelpButtonClicked(CancelEventArgs)Form.OnMaximizedBoundsChanged(EventArgs)Form.OnMaximumSizeChanged(EventArgs)Form.OnMinimumSizeChanged(EventArgs)Form.OnInputLanguageChanged(InputLanguageChangedEventArgs)Form.OnInputLanguageChanging(InputLanguageChangingEventArgs)Form.OnMdiChildActivate(EventArgs)Form.OnMenuStart(EventArgs)Form.OnMenuComplete(EventArgs)Form.OnResize(EventArgs)Form.OnDpiChanged(DpiChangedEventArgs)Form.OnGetDpiScaledSize(int, int, ref Size)Form.OnRightToLeftLayoutChanged(EventArgs)Form.OnTextChanged(EventArgs)Form.ProcessCmdKey(ref Message, Keys)Form.ProcessDialogChar(char)Form.ProcessKeyPreview(ref Message)Form.ProcessTabKey(bool)Form.RemoveOwnedForm(Form)Form.Select(bool, bool)Form.GetScaledBounds(Rectangle, SizeF, BoundsSpecified)Form.SetDesktopBounds(int, int, int, int)Form.SetDesktopLocation(int, int)Form.Show(IWin32Window)Form.ShowDialog()Form.ShowDialog(IWin32Window)Form.ToString()Form.OnResizeBegin(EventArgs)Form.OnResizeEnd(EventArgs)Form.OnStyleChanged(EventArgs)Form.ValidateChildren()Form.ValidateChildren(ValidationConstraints)Form.AcceptButtonForm.ActiveFormForm.ActiveMdiChildForm.AllowTransparencyForm.AutoScrollForm.AutoSizeForm.AutoSizeModeForm.AutoValidateForm.CancelButtonForm.ClientSizeForm.ControlBoxForm.DefaultImeModeForm.DefaultSizeForm.DesktopBoundsForm.DesktopLocationForm.DialogResultForm.HelpButtonForm.IconForm.IsMdiChildForm.IsMdiContainerForm.IsRestrictedWindowForm.KeyPreviewForm.LocationForm.MaximizedBoundsForm.MainMenuStripForm.MenuForm.MaximizeBoxForm.MdiChildrenForm.MdiParentForm.MergedMenuForm.MinimizeBoxForm.ModalForm.OpacityForm.OwnedFormsForm.OwnerForm.RestoreBoundsForm.RightToLeftLayoutForm.ShowInTaskbarForm.ShowWithoutActivationForm.SizeForm.SizeGripStyleForm.StartPositionForm.TopLevelForm.TopMostForm.TransparencyKeyForm.WindowStateForm.AutoSizeChangedForm.AutoValidateChangedForm.HelpButtonClickedForm.MaximizedBoundsChangedForm.MaximumSizeChangedForm.MinimumSizeChangedForm.ActivatedForm.DeactivateForm.FormClosingForm.FormClosedForm.LoadForm.MdiChildActivateForm.MenuCompleteForm.MenuStartForm.InputLanguageChangedForm.InputLanguageChangingForm.RightToLeftLayoutChangedForm.ShownForm.DpiChangedForm.ResizeBeginForm.ResizeEndContainerControl.OnAutoValidateChanged(EventArgs)ContainerControl.PerformAutoScale()ContainerControl.Validate()ContainerControl.Validate(bool)ContainerControl.AutoScaleDimensionsContainerControl.AutoScaleFactorContainerControl.AutoScaleModeContainerControl.BindingContextContainerControl.CanEnableImeContainerControl.ActiveControlContainerControl.CurrentAutoScaleDimensionsContainerControl.ParentFormScrollableControl.ScrollStateAutoScrollingScrollableControl.ScrollStateHScrollVisibleScrollableControl.ScrollStateVScrollVisibleScrollableControl.ScrollStateUserHasScrolledScrollableControl.ScrollStateFullDragScrollableControl.GetScrollState(int)ScrollableControl.OnMouseWheel(MouseEventArgs)ScrollableControl.OnRightToLeftChanged(EventArgs)ScrollableControl.OnPaddingChanged(EventArgs)ScrollableControl.SetDisplayRectLocation(int, int)ScrollableControl.ScrollControlIntoView(Control)ScrollableControl.OnScroll(ScrollEventArgs)ScrollableControl.SetAutoScrollMargin(int, int)ScrollableControl.SetScrollState(int, bool)ScrollableControl.AutoScrollMarginScrollableControl.AutoScrollPositionScrollableControl.AutoScrollMinSizeScrollableControl.DisplayRectangleScrollableControl.HScrollScrollableControl.HorizontalScrollScrollableControl.VScrollScrollableControl.VerticalScrollScrollableControl.ScrollControl.GetAccessibilityObjectById(int)Control.SetAutoSizeMode(AutoSizeMode)Control.GetAutoSizeMode()Control.AccessibilityNotifyClients(AccessibleEvents, int)Control.AccessibilityNotifyClients(AccessibleEvents, int, int)Control.BeginInvoke(Delegate)Control.BeginInvoke(Delegate, params object[])Control.BringToFront()Control.Contains(Control)Control.CreateAccessibilityInstance()Control.CreateGraphics()Control.CreateControl()Control.DestroyHandle()Control.DoDragDrop(object, DragDropEffects)Control.DrawToBitmap(Bitmap, Rectangle)Control.EndInvoke(IAsyncResult)Control.FindForm()Control.GetTopLevel()Control.RaiseKeyEvent(object, KeyEventArgs)Control.RaiseMouseEvent(object, MouseEventArgs)Control.Focus()Control.FromChildHandle(IntPtr)Control.FromHandle(IntPtr)Control.GetChildAtPoint(Point, GetChildAtPointSkip)Control.GetChildAtPoint(Point)Control.GetContainerControl()Control.GetNextControl(Control, bool)Control.GetStyle(ControlStyles)Control.Hide()Control.InitLayout()Control.Invalidate(Region)Control.Invalidate(Region, bool)Control.Invalidate()Control.Invalidate(bool)Control.Invalidate(Rectangle)Control.Invalidate(Rectangle, bool)Control.Invoke(Delegate)Control.Invoke(Delegate, params object[])Control.InvokePaint(Control, PaintEventArgs)Control.InvokePaintBackground(Control, PaintEventArgs)Control.IsKeyLocked(Keys)Control.IsInputChar(char)Control.IsInputKey(Keys)Control.IsMnemonic(char, string)Control.LogicalToDeviceUnits(int)Control.LogicalToDeviceUnits(Size)Control.ScaleBitmapLogicalToDevice(ref Bitmap)Control.NotifyInvalidate(Rectangle)Control.InvokeOnClick(Control, EventArgs)Control.OnBindingContextChanged(EventArgs)Control.OnCausesValidationChanged(EventArgs)Control.OnContextMenuChanged(EventArgs)Control.OnContextMenuStripChanged(EventArgs)Control.OnCursorChanged(EventArgs)Control.OnDockChanged(EventArgs)Control.OnNotifyMessage(Message)Control.OnParentBackColorChanged(EventArgs)Control.OnParentBackgroundImageChanged(EventArgs)Control.OnParentBindingContextChanged(EventArgs)Control.OnParentCursorChanged(EventArgs)Control.OnParentEnabledChanged(EventArgs)Control.OnParentFontChanged(EventArgs)Control.OnParentForeColorChanged(EventArgs)Control.OnParentRightToLeftChanged(EventArgs)Control.OnParentVisibleChanged(EventArgs)Control.OnPrint(PaintEventArgs)Control.OnTabIndexChanged(EventArgs)Control.OnTabStopChanged(EventArgs)Control.OnClick(EventArgs)Control.OnClientSizeChanged(EventArgs)Control.OnControlAdded(ControlEventArgs)Control.OnControlRemoved(ControlEventArgs)Control.OnLocationChanged(EventArgs)Control.OnDoubleClick(EventArgs)Control.OnDragEnter(DragEventArgs)Control.OnDragOver(DragEventArgs)Control.OnDragLeave(EventArgs)Control.OnDragDrop(DragEventArgs)Control.OnGiveFeedback(GiveFeedbackEventArgs)Control.InvokeGotFocus(Control, EventArgs)Control.OnGotFocus(EventArgs)Control.OnHelpRequested(HelpEventArgs)Control.OnInvalidated(InvalidateEventArgs)Control.OnKeyDown(KeyEventArgs)Control.OnKeyPress(KeyPressEventArgs)Control.OnKeyUp(KeyEventArgs)Control.OnLeave(EventArgs)Control.InvokeLostFocus(Control, EventArgs)Control.OnLostFocus(EventArgs)Control.OnMarginChanged(EventArgs)Control.OnMouseDoubleClick(MouseEventArgs)Control.OnMouseClick(MouseEventArgs)Control.OnMouseCaptureChanged(EventArgs)Control.OnMouseDown(MouseEventArgs)Control.OnMouseEnter(EventArgs)Control.OnMouseLeave(EventArgs)Control.OnDpiChangedBeforeParent(EventArgs)Control.OnDpiChangedAfterParent(EventArgs)Control.OnMouseHover(EventArgs)Control.OnMouseMove(MouseEventArgs)Control.OnMouseUp(MouseEventArgs)Control.OnMove(EventArgs)Control.OnQueryContinueDrag(QueryContinueDragEventArgs)Control.OnRegionChanged(EventArgs)Control.OnPreviewKeyDown(PreviewKeyDownEventArgs)Control.OnSizeChanged(EventArgs)Control.OnChangeUICues(UICuesEventArgs)Control.OnSystemColorsChanged(EventArgs)Control.OnValidating(CancelEventArgs)Control.OnValidated(EventArgs)Control.RescaleConstantsForDpi(int, int)Control.PerformLayout()Control.PerformLayout(Control, string)Control.PointToClient(Point)Control.PointToScreen(Point)Control.PreProcessMessage(ref Message)Control.PreProcessControlMessage(ref Message)Control.ProcessKeyEventArgs(ref Message)Control.ProcessKeyMessage(ref Message)Control.RaiseDragEvent(object, DragEventArgs)Control.RaisePaintEvent(object, PaintEventArgs)Control.RecreateHandle()Control.RectangleToClient(Rectangle)Control.RectangleToScreen(Rectangle)Control.ReflectMessage(IntPtr, ref Message)Control.Refresh()Control.ResetMouseEventArgs()Control.ResetText()Control.ResumeLayout()Control.ResumeLayout(bool)Control.Scale(SizeF)Control.Select()Control.SelectNextControl(Control, bool, bool, bool, bool)Control.SendToBack()Control.SetBounds(int, int, int, int)Control.SetBounds(int, int, int, int, BoundsSpecified)Control.SizeFromClientSize(Size)Control.SetStyle(ControlStyles, bool)Control.SetTopLevel(bool)Control.RtlTranslateAlignment(HorizontalAlignment)Control.RtlTranslateAlignment(LeftRightAlignment)Control.RtlTranslateAlignment(ContentAlignment)Control.RtlTranslateHorizontal(HorizontalAlignment)Control.RtlTranslateLeftRight(LeftRightAlignment)Control.RtlTranslateContent(ContentAlignment)Control.Show()Control.SuspendLayout()Control.Update()Control.UpdateBounds()Control.UpdateBounds(int, int, int, int)Control.UpdateBounds(int, int, int, int, int, int)Control.UpdateZOrder()Control.UpdateStyles()Control.OnImeModeChanged(EventArgs)Control.AccessibilityObjectControl.AccessibleDefaultActionDescriptionControl.AccessibleDescriptionControl.AccessibleNameControl.AccessibleRoleControl.AllowDropControl.AnchorControl.AutoScrollOffsetControl.LayoutEngineControl.BackgroundImageControl.BackgroundImageLayoutControl.BottomControl.BoundsControl.CanFocusControl.CanRaiseEventsControl.CanSelectControl.CaptureControl.CausesValidationControl.CheckForIllegalCrossThreadCallsControl.ClientRectangleControl.CompanyNameControl.ContainsFocusControl.ContextMenuControl.ContextMenuStripControl.ControlsControl.CreatedControl.CursorControl.DataBindingsControl.DefaultBackColorControl.DefaultCursorControl.DefaultFontControl.DefaultForeColorControl.DefaultMarginControl.DefaultMaximumSizeControl.DefaultMinimumSizeControl.DefaultPaddingControl.DeviceDpiControl.IsDisposedControl.DisposingControl.DockControl.DoubleBufferedControl.EnabledControl.FocusedControl.FontHeightControl.HandleControl.HasChildrenControl.HeightControl.IsHandleCreatedControl.InvokeRequiredControl.IsAccessibleControl.IsMirroredControl.LeftControl.MarginControl.ModifierKeysControl.MouseButtonsControl.MousePositionControl.NameControl.ParentControl.ProductNameControl.ProductVersionControl.RecreatingHandleControl.RegionControl.RenderRightToLeftControl.ResizeRedrawControl.RightControl.RightToLeftControl.ScaleChildrenControl.TabIndexControl.TabStopControl.TagControl.TopControl.TopLevelControlControl.ShowKeyboardCuesControl.ShowFocusCuesControl.UseWaitCursorControl.VisibleControl.WidthControl.PreferredSizeControl.PaddingControl.ImeModeControl.ImeModeBaseControl.PropagatingImeModeControl.BackColorChangedControl.BackgroundImageChangedControl.BackgroundImageLayoutChangedControl.BindingContextChangedControl.CausesValidationChangedControl.ClientSizeChangedControl.ContextMenuChangedControl.ContextMenuStripChangedControl.CursorChangedControl.DockChangedControl.EnabledChangedControl.FontChangedControl.ForeColorChangedControl.LocationChangedControl.MarginChangedControl.RegionChangedControl.RightToLeftChangedControl.SizeChangedControl.TabIndexChangedControl.TabStopChangedControl.TextChangedControl.VisibleChangedControl.ClickControl.ControlAddedControl.ControlRemovedControl.DragDropControl.DragEnterControl.DragOverControl.DragLeaveControl.GiveFeedbackControl.HandleCreatedControl.HandleDestroyedControl.HelpRequestedControl.InvalidatedControl.PaddingChangedControl.PaintControl.QueryContinueDragControl.QueryAccessibilityHelpControl.DoubleClickControl.EnterControl.GotFocusControl.KeyDownControl.KeyPressControl.KeyUpControl.LayoutControl.LeaveControl.LostFocusControl.MouseClickControl.MouseDoubleClickControl.MouseCaptureChangedControl.MouseDownControl.MouseEnterControl.MouseLeaveControl.DpiChangedBeforeParentControl.DpiChangedAfterParentControl.MouseHoverControl.MouseMoveControl.MouseUpControl.MouseWheelControl.MoveControl.PreviewKeyDownControl.ResizeControl.ChangeUICuesControl.StyleChangedControl.SystemColorsChangedControl.ValidatingControl.ValidatedControl.ParentChangedControl.ImeModeChangedComponent.Dispose()Component.GetService(Type)Component.EventsComponent.ContainerComponent.DesignModeComponent.DisposedMarshalByRefObject.MemberwiseClone(bool)MarshalByRefObject.GetLifetimeService()MarshalByRefObject.InitializeLifetimeService()MarshalByRefObject.CreateObjRef(Type)

Constructors

GridViewColumnChooser()

Initializes a new instance of the GridViewColumnChooser class.

Declaration

cs-api-definition
public GridViewColumnChooser()

GridViewColumnChooser(GridViewTemplate)

Initializes a new instance of the ColumnChooserForm class.

Declaration

cs-api-definition
public GridViewColumnChooser(GridViewTemplate template)

Parameters

template

GridViewTemplate

The GridViewTemplate object, owner of this form

GridViewColumnChooser(GridViewTemplate, RadGridViewElement)

Initializes a new instance of the GridViewColumnChooser class.

Declaration

cs-api-definition
public GridViewColumnChooser(GridViewTemplate template, RadGridViewElement rootElement)

Parameters

template

GridViewTemplate

The GridViewTemplate object, owner of this form

rootElement

RadGridViewElement

The RadGridViewElement object

Properties

ColumnChooserControl

Gets the ColumnChooserControl associated with this form.

Declaration

cs-api-definition
public ColumnChooserControl ColumnChooserControl { get; }

Property Value

ColumnChooserControl

Columns

Gets list of GridViewDataColumn objects contained in the form.

Declaration

cs-api-definition
public IList<GridViewColumn> Columns { get; }

Property Value

IList<GridViewColumn>

ColumnsDisplayMode

Gets or sets the mode that defines which columns are displayed in the column chooser.

Declaration

cs-api-definition
public ColumnChooserColumnsDisplayMode ColumnsDisplayMode { get; set; }

Property Value

ColumnChooserColumnsDisplayMode

EnableFilter

Gets or sets a value indicating whether the filter text box is visible.

Declaration

cs-api-definition
public bool EnableFilter { get; set; }

Property Value

bool

GridRootElement

Gets or sets the associated instance of GridVisualElement

Declaration

cs-api-definition
public RadGridViewElement GridRootElement { get; }

Property Value

RadGridViewElement

Template

Gets the GridViewTemplate associated with this form.

Declaration

cs-api-definition
public GridViewTemplate Template { get; set; }

Property Value

GridViewTemplate

Methods

Dispose(bool)

Clean up any resources being used.

Declaration

cs-api-definition
protected override void Dispose(bool disposing)

Parameters

disposing

bool

true if managed resources should be disposed; otherwise, false.

Overrides RadForm.Dispose(bool)

HandleDpiChanged()

Handles the DPI change.

Declaration

cs-api-definition
protected override void HandleDpiChanged()

Overrides RadFormControlBase.HandleDpiChanged()

OnLoad(EventArgs)

Raises the event.

Declaration

cs-api-definition
protected override void OnLoad(EventArgs e)

Parameters

e

EventArgs

The EventArgs instance containing the event data.

Overrides RadForm.OnLoad(EventArgs)

OnShown(EventArgs)

Raises the Shown event.

Declaration

cs-api-definition
protected override void OnShown(EventArgs e)

Parameters

e

EventArgs

A EventArgs that contains the event data.

Overrides RadFormControlBase.OnShown(EventArgs)