Class TreeGridRowSelectionController

Represents a class that implements the selection behavior of row in SfTreeGrid.

Inheritance

System.Object

TreeGridBaseSelectionController

TreeGridRowSelectionController

CheckBoxRowSelectionController

Implements

ITreeGridSelectionController

System.IDisposable

Inherited Members

TreeGridBaseSelectionController.LastPressedKey

TreeGridBaseSelectionController.SetPressedIndex(RowColumnIndex)

TreeGridBaseSelectionController.HandleGridOperations(TreeGridOperationsHandlerArgs)

TreeGridBaseSelectionController.HandlePointerOperations(GridPointerEventArgs, RowColumnIndex)

TreeGridBaseSelectionController.ProcessOnRowHeaderChanged()

TreeGridBaseSelectionController.HandleSelectionPropertyChanges(SelectionPropertyChangedHandlerArgs)

TreeGridBaseSelectionController.ChangeFlowDirectionKey(VirtualKey)

TreeGridBaseSelectionController.CreateCurrentCellManager()

TreeGridBaseSelectionController.Dispose()

TreeGridBaseSelectionController.Dispose(Boolean)

TreeGridBaseSelectionController.ScrollToRowIndex(Int32)

TreeGridBaseSelectionController.SuspendUpdates()

TreeGridBaseSelectionController.ResumeUpdates()

TreeGridBaseSelectionController.RaiseSelectionChanging(List<Object>, List<Object>)

TreeGridBaseSelectionController.RaiseSelectionChanged(List<Object>, List<Object>)

TreeGridBaseSelectionController.IsSuspended

TreeGridBaseSelectionController.TreeGrid

TreeGridBaseSelectionController.PressedRowColumnIndex

TreeGridBaseSelectionController.CurrentCellManager

TreeGridBaseSelectionController.SelectedRows

Namespace: Syncfusion.UI.Xaml.TreeGrid

Assembly: Syncfusion.SfGrid.UWP.dll

Syntax

public class TreeGridRowSelectionController : TreeGridBaseSelectionController, ITreeGridSelectionController, IDisposable

Constructors

TreeGridRowSelectionController(SfTreeGrid)

Initializes a new instance of the TreeGridRowSelectionController class.

Declaration

public TreeGridRowSelectionController(SfTreeGrid treeGrid)

Parameters

Type	Name	Description
SfTreeGrid	treeGrid	The SfTreeGrid.

Methods

ClearSelections(Boolean)

Clears all the selected rows in SfTreeGrid.

Declaration

public override void ClearSelections(bool exceptCurrentRow)

Parameters

Type	Name	Description
System.Boolean	exceptCurrentRow	Decides whether the current row selection needs to be removed when the selections are cleared.

Overrides

TreeGridBaseSelectionController.ClearSelections(Boolean)

Remarks

This method helps to clear the selection programmatically.

GetNextRowIndex(Int32)

Gets the index of the next row corresponding to the specified row index.

Declaration

protected int GetNextRowIndex(int index)

Parameters

Type	Name	Description
System.Int32	index	The corresponding index to get the index of next row.

Returns

Type	Description
System.Int32	The index of next row; Returns , -1 when the row index is last row index.

GetPreviousRowIndex(Int32)

Gets the index of previous row corresponding to the specified index.

Declaration

protected int GetPreviousRowIndex(int index)

Parameters

Type	Name	Description
System.Int32	index	The corresponding index to get the previous row index.

Returns

Type	Description
System.Int32	Returns the index of previous row.

HandleCollectionChanged(NotifyCollectionChangedEventArgs, TreeGridCollectionChangedReason)

Handles the selection when the SelectedItems, Columns and DataSource property collection changes.

Declaration

public override void HandleCollectionChanged(NotifyCollectionChangedEventArgs e, TreeGridCollectionChangedReason reason)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	e	The System.Collections.Specialized.NotifyCollectionChangedEventArgs that contains data for collection changes.
TreeGridCollectionChangedReason	reason	The TreeGridCollectionChangedReason contains reason for the collection changes.

Overrides

TreeGridBaseSelectionController.HandleCollectionChanged(NotifyCollectionChangedEventArgs, TreeGridCollectionChangedReason)

Remarks

This method is called when the collection changes on SelectedItems, Columns and DataSource properties in SfTreeGrid.

HandleKeyDown(KeyRoutedEventArgs)

Handles the selection for the keyboard interactions that are performed in SfTreeGrid.

Declaration

public override bool HandleKeyDown(KeyRoutedEventArgs args)

Parameters

Type	Name	Description
Windows.UI.Xaml.Input.KeyRoutedEventArgs	args	Contains information about the key that was pressed.

Returns

Type	Description
System.Boolean	true if the key should be handled in SfTreeGrid; otherwise, false.

Overrides

TreeGridBaseSelectionController.HandleKeyDown(KeyRoutedEventArgs)

HandleNodeExpandCollapse(Int32, Int32, Boolean)

Handles the selection when the node is expanded or collapsed in SfTreeGrid.

Declaration

public override void HandleNodeExpandCollapse(int index, int count, bool isExpanded)

Parameters

Type	Name	Description
System.Int32	index	The corresponding index of the node.
System.Int32	count	The number of rows that are collapsed or expanded.
System.Boolean	isExpanded	Specifies whether the node is expanded or not.

Overrides

TreeGridBaseSelectionController.HandleNodeExpandCollapse(Int32, Int32, Boolean)

Remarks

This method is invoked when the node is expanded or collapsed.

HandleNodeOperations(NodeOperation)

Processes the selection when the node is expanded/collapsed in SfTreeGrid.

Declaration

protected override void HandleNodeOperations(NodeOperation NodeOpeation)

Parameters

Type	Name	Description
NodeOperation	NodeOpeation

Overrides

TreeGridBaseSelectionController.HandleNodeOperations(NodeOperation)

Remarks

This method refreshes the selection while expanding/collapsing the node in SfTreeGrid.

MoveCurrentCell(RowColumnIndex, Boolean)

Moves the current cell to the specified rowColumnIndex.

Declaration

public override void MoveCurrentCell(RowColumnIndex rowColumnIndex, bool needToClearSelection = true)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	Specifies the corresponding rowColumnIndex to move the current cell.
System.Boolean	needToClearSelection	Decides whether the current row selection should remove or not while moving the current cell.

Overrides

TreeGridBaseSelectionController.MoveCurrentCell(RowColumnIndex, Boolean)

Remarks

This method is not applicable when is Row.

ProcessCurrentItemChanged(SelectionPropertyChangedHandlerArgs)

Processes the row selection when the CurrentItem property value changes.

Declaration

protected override void ProcessCurrentItemChanged(SelectionPropertyChangedHandlerArgs handle)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	handle	The SelectionPropertyChangedHandlerArgs contains the data for the CurrentItem property value changes.

Overrides

TreeGridBaseSelectionController.ProcessCurrentItemChanged(SelectionPropertyChangedHandlerArgs)

ProcessKeyDown(KeyRoutedEventArgs)

Processes the row selection when the keyboard interactions that are performed in SfTreeGrid.

Declaration

protected virtual void ProcessKeyDown(KeyRoutedEventArgs args)

Parameters

Type	Name	Description
Windows.UI.Xaml.Input.KeyRoutedEventArgs	args	Contains the information about the key that was pressed.

Remarks

This method helps to customize the keyboard interaction behavior in SfTreeGrid.

ProcessNavigationModeChanged(SelectionPropertyChangedHandlerArgs)

Processes the row selection when the property value changes.

Declaration

protected override void ProcessNavigationModeChanged(SelectionPropertyChangedHandlerArgs handle)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	handle	The SelectionPropertyChangedHandlerArgs contains the data for the property value changes.

Overrides

TreeGridBaseSelectionController.ProcessNavigationModeChanged(SelectionPropertyChangedHandlerArgs)

ProcessNodeCollapsed(Int32, Int32)

Processes the row selection when the node is collapsed from view.

Declaration

protected virtual void ProcessNodeCollapsed(int removeAtIndex, int count)

Parameters

Type	Name	Description
System.Int32	removeAtIndex	The corresponding index of the node that is collapsed from the view.
System.Int32	count	removed rows count.

ProcessNodeExpanded(Int32, Int32)

Processes the row selection when the node is expanded in SfTreeGrid.

Declaration

protected virtual void ProcessNodeExpanded(int insertIndex, int count)

Parameters

Type	Name	Description
System.Int32	insertIndex	The corresponding index of the node that is expanded in to view.
System.Int32	count	inserted rows count.

ProcessOnDoubleTapped(RowColumnIndex)

Processes the selection when the mouse point is double tapped on the particular cell in SfTreeGrid.

Declaration

protected override void ProcessOnDoubleTapped(RowColumnIndex currentRowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	currentRowColumnIndex	The corresponding rowColumnIndex of the mouse point.

Overrides

TreeGridBaseSelectionController.ProcessOnDoubleTapped(RowColumnIndex)

Remarks

This method invoked to process selection and begin edit the cell when EditTrigger is OnDoubleTap.

ProcessOnSortChanged(SortColumnChangedHandle)

Processes the row selection when the column is sorted in SfTreeGrid.

Declaration

protected override void ProcessOnSortChanged(SortColumnChangedHandle sortcolumnHandle)

Parameters

Type	Name	Description
SortColumnChangedHandle	sortcolumnHandle	Contains information related to the sorting action.

Overrides

TreeGridBaseSelectionController.ProcessOnSortChanged(SortColumnChangedHandle)

Remarks

This method refreshes the selection while sorting the column in SfTreeGrid.

ProcessOnTapped(TappedRoutedEventArgs, RowColumnIndex)

Processes the cell selection when the mouse point is tapped on the TreeGridCell.

Declaration

protected override void ProcessOnTapped(TappedRoutedEventArgs e, RowColumnIndex currentRowColumnIndex)

Parameters

Type	Name	Description
Windows.UI.Xaml.Input.TappedRoutedEventArgs	e	Contains the data related to the tap interaction.
RowColumnIndex	currentRowColumnIndex	The corresponding rowColumnIndex of the mouse point.

Overrides

TreeGridBaseSelectionController.ProcessOnTapped(TappedRoutedEventArgs, RowColumnIndex)

Remarks

This method invoked to process selection and begin edit the cell when is OnTap.

ProcessPointerMoved(PointerRoutedEventArgs, RowColumnIndex)

Processes the row selection when mouse pointer is moved on the SfTreeGrid.

Declaration

protected override void ProcessPointerMoved(PointerRoutedEventArgs args, RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
Windows.UI.Xaml.Input.PointerRoutedEventArgs	args	Contains the data for mouse related interaction.
RowColumnIndex	rowColumnIndex	The corresponding rowColumnIndex related to the mouse point.

Overrides

TreeGridBaseSelectionController.ProcessPointerMoved(PointerRoutedEventArgs, RowColumnIndex)

ProcessPointerPressed(PointerRoutedEventArgs, RowColumnIndex)

Processes the row selection when the mouse pointer is pressed in SfTreeGrid.

Declaration

protected override void ProcessPointerPressed(PointerRoutedEventArgs args, RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
Windows.UI.Xaml.Input.PointerRoutedEventArgs	args	Contains the data for mouse pointer action.
RowColumnIndex	rowColumnIndex	The corresponding rowColumnIndex of the pressed point location.

Overrides

TreeGridBaseSelectionController.ProcessPointerPressed(PointerRoutedEventArgs, RowColumnIndex)

Remarks

This method will be invoked when the pointer is pressed using touch or mouse in SfTreeGrid. The selection is initialized in pointer pressed state when the set as true.

ProcessPointerReleased(PointerRoutedEventArgs, RowColumnIndex)

Processes the row selection when the mouse pointer is released from SfTreeGrid.

Declaration

protected override void ProcessPointerReleased(PointerRoutedEventArgs args, RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
Windows.UI.Xaml.Input.PointerRoutedEventArgs	args	Contains the data for mouse pointer action.
RowColumnIndex	rowColumnIndex	The corresponding rowColumnIndex of the mouse released point.

Overrides

TreeGridBaseSelectionController.ProcessPointerReleased(PointerRoutedEventArgs, RowColumnIndex)

Remarks

The selection is initialized in pointer released state when the set as false.

ProcessPointerSelection(PointerRoutedEventArgs, RowColumnIndex)

Processes the row selection when the pointer pressed or released interactions are performed in SfTreeGrid.

Declaration

protected void ProcessPointerSelection(PointerRoutedEventArgs args, RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
Windows.UI.Xaml.Input.PointerRoutedEventArgs	args	Contains the data for mouse pointer action.
RowColumnIndex	rowColumnIndex	The corresponding rowColumnIndex related to the mouse point.

ProcessSelectedIndexChanged(SelectionPropertyChangedHandlerArgs)

Processes the selection when the property value changes.

Declaration

protected override void ProcessSelectedIndexChanged(SelectionPropertyChangedHandlerArgs handle)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	handle	The SelectionPropertyChangedHandlerArgs contains the data for the property value changes.

Overrides

TreeGridBaseSelectionController.ProcessSelectedIndexChanged(SelectionPropertyChangedHandlerArgs)

ProcessSelectedItemChanged(SelectionPropertyChangedHandlerArgs)

Processes the selection when the property value changes.

Declaration

protected override void ProcessSelectedItemChanged(SelectionPropertyChangedHandlerArgs handle)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	handle	The SelectionPropertyChangedHandlerArgs contains the data for the property value changes.

Overrides

TreeGridBaseSelectionController.ProcessSelectedItemChanged(SelectionPropertyChangedHandlerArgs)

ProcessSelectedItemsChanged(NotifyCollectionChangedEventArgs)

Processes the row selection when the property value changes.

Declaration

protected virtual void ProcessSelectedItemsChanged(NotifyCollectionChangedEventArgs e)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	e	The System.Collections.Specialized.NotifyCollectionChangedEventArgs that contains data for SelectedItems collection changes.

ProcessSelection(RowColumnIndex, RowColumnIndex, SelectionReason)

Processes the row selection for the specified row index.

Declaration

protected virtual bool ProcessSelection(RowColumnIndex rowColumnIndex, RowColumnIndex previousCurrentCellIndex, SelectionReason reason)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex
RowColumnIndex	previousCurrentCellIndex	The previous current cell row column index.
SelectionReason	reason	Contains the reason for process selection SelectionReason.

Returns

Type	Description
System.Boolean	Returns true if the selection is added to corresponding row and column index; otherwise, false.

ProcessSelectionModeChanged(SelectionPropertyChangedHandlerArgs)

Processes the row selection when the property value changes.

Declaration

protected override void ProcessSelectionModeChanged(SelectionPropertyChangedHandlerArgs handle)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	handle	The SelectionPropertyChangedHandlerArgs contains the data for the property changes.

Overrides

TreeGridBaseSelectionController.ProcessSelectionModeChanged(SelectionPropertyChangedHandlerArgs)

ProcessSourceCollectionChanged(NotifyCollectionChangedEventArgs, TreeGridCollectionChangedReason)

Processes the row selection when the ItemsSource property collection changes.

Declaration

protected virtual void ProcessSourceCollectionChanged(NotifyCollectionChangedEventArgs e, TreeGridCollectionChangedReason reason)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	e	The System.Collections.Specialized.NotifyCollectionChangedEventArgs that contains data for source collection changes.
TreeGridCollectionChangedReason	reason	The TreeGridCollectionChangedReason contains reason for the source collection changes.

RefreshSelectedItems()

Refreshes the collection in SfTreeGrid.

Declaration

protected virtual void RefreshSelectedItems()

Remarks

This method refresh the collection when the grid related operations performed.

RefreshSelection()

Refreshes the selected index, selected item, selected items and current item of SfTreeGrid.

Declaration

public void RefreshSelection()

SelectAll()

Selects all the rows in SfTreeGrid.

Declaration

public override void SelectAll()

Overrides

TreeGridBaseSelectionController.SelectAll()

Remarks

This method only works for Multiple and Extended mode selection.

SelectRows(Int32, Int32)

Selects the rows corresponding to the specified start and end index of the row.

Declaration

public override void SelectRows(int startRowIndex, int endRowIndex)

Parameters

Type	Name	Description
System.Int32	startRowIndex	The start index of the row.
System.Int32	endRowIndex	The end index of the row.

Overrides

TreeGridBaseSelectionController.SelectRows(Int32, Int32)

Remarks

This method only works for Multiple and Extended mode selection.

UpdateCurrentRowIndex(Boolean)

Updates the current row index based on CurrentItem property value changes.

Declaration

protected void UpdateCurrentRowIndex(bool canFocusGrid = true)

Parameters

Type	Name	Description
System.Boolean	canFocusGrid	Indicates the SfTreeGrid can be focused after the current row index is updated.

Implements

ITreeGridSelectionController

System.IDisposable

Extension Methods

DateTimeExtension.ToDateTime(Object)