Class GridSelectionController

Represents a class that implements IGridSelectionController that contains methods through IGridSelectionController for handling selection operations in a SfDataGrid control.

Inheritance

System.Object

GridSelectionController

Implements

IGridSelectionController

System.ComponentModel.INotifyPropertyChanged

System.IDisposable

Namespace: Syncfusion.SfDataGrid

Assembly: Syncfusion.SfDataGrid.Android.dll

Syntax

public class GridSelectionController : Object, IGridSelectionController, INotifyPropertyChanged, IDisposable

Constructors

GridSelectionController()

Initializes a new instance of the GridSelectionController class.

Declaration

public GridSelectionController()

GridSelectionController(SfDataGrid)

Initializes a new instance of the GridSelectionController class.

Declaration

public GridSelectionController(SfDataGrid dataGrid)

Parameters

Type	Name	Description
SfDataGrid	dataGrid	The reference of the SfDataGrid.

Properties

DataGrid

Gets or sets the reference of the SfDataGrid control.

Declaration

public SfDataGrid DataGrid { get; set; }

Property Value

Type	Description
SfDataGrid	The reference of the SfDataGrid control.

LastSelectedRowIndex

Gets or sets a value for maintains the Last selected index

Declaration

protected int LastSelectedRowIndex { get; set; }

Property Value

Type	Description
System.Int32	The last index of the selected row.

SelectedRows

Gets or sets the collection of selected rows.

Declaration

public GridSelectedRowsCollection SelectedRows { get; set; }

Property Value

Type	Description
Syncfusion.SfDataGrid.GridSelectedRowsCollection	The collection of selected rows.

Methods

ClearSelection()

Clears the selection in a SfDataGrid control.

Declaration

public void ClearSelection()

Dispose()

Releases the resources used by the component.

Declaration

public void Dispose()

Dispose(Boolean)

Releases the unmanaged resources used by the component and optionally releases the managed resources.

Declaration

protected virtual void Dispose(bool isDisposing)

Parameters

Type	Name	Description
System.Boolean	isDisposing	if true - release both managed and unmanaged resources; if false - release only unmanaged resources.

GetSelectionColor(Int32, Object)

Returns the selection color for selected row. This method can be overridden to apply multiple selection color.

Declaration

public virtual Color GetSelectionColor(int rowIndex, object rowData)

Parameters

Type	Name	Description
System.Int32	rowIndex	The index of the selected row.
System.Object	rowData	The row data of the selected row.

Returns

Type	Description
Android.Graphics.Color	The selection color for selected row.

HandleCollectionChanged(NotifyCollectionChangedEventArgs, CollectionChangedReason)

Handles the collection changes such as selected items and source collection changed to process selection.

Declaration

public virtual void HandleCollectionChanged(NotifyCollectionChangedEventArgs e, CollectionChangedReason reason)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	e	The System.Collections.Specialized.NotifyCollectionChangedEventArgs
Syncfusion.SfDataGrid.CollectionChangedReason	reason	The reason for the collection change.

HandleGridOperation(GridOperationHandlerArgs)

Handles the grid operation to update selection.

Declaration

public virtual void HandleGridOperation(GridOperationHandlerArgs args)

Parameters

Type	Name	Description
Syncfusion.SfDataGrid.GridOperationHandlerArgs	args	The Syncfusion.SfDataGrid.GridOperationHandlerArgs.

HandlePointerOperation(GridPointerEventArgs, RowColumnIndex)

Handles the pointer operation (touch-down or touch-up or double tap or moved) to handle selection.

Declaration

public virtual void HandlePointerOperation(GridPointerEventArgs args, RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
GridPointerEventArgs	args	The GridPointerEventArgs.
RowColumnIndex	rowColumnIndex	The row column index in which the pointer operation is performed.

HandleSelectionPropertyChanges(SelectionPropertyChangedHandlerArgs)

Handles the selection when the selection related properties gets changed.

Declaration

public virtual void HandleSelectionPropertyChanges(SelectionPropertyChangedHandlerArgs handle)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	handle	The SelectionPropertyChangedHandlerArgs.

ProcessCurrentItemChanged(SelectionPropertyChangedHandlerArgs)

Adds the last selection to the current item

Declaration

protected virtual void ProcessCurrentItemChanged(SelectionPropertyChangedHandlerArgs args)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	args	SelectionPropertyChangedHandler arguments.

ProcessingPointerTouchUp(RowColumnIndex, MotionEvent)

Method to process the pointer touch up. Handles the touch up operation of each row in a SfDataGrid control.

Declaration

public virtual void ProcessingPointerTouchUp(RowColumnIndex rowColumnIndex, MotionEvent args)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The row column index in which the touch up action is performed.
Android.Views.MotionEvent	args	The event arguments.

ProcessOnGroupChanged(NotifyCollectionChangedEventArgs)

Processes on group changed.

Declaration

protected virtual void ProcessOnGroupChanged(NotifyCollectionChangedEventArgs args)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	args	The collection changed arguments.

ProcessOnSortChanged(SortColumnChangedHandleArgs)

Processes on sort changed.

Declaration

protected virtual void ProcessOnSortChanged(SortColumnChangedHandleArgs sortColumnHandleArgs)

Parameters

Type	Name	Description
SortColumnChangedHandleArgs	sortColumnHandleArgs	The arguments for handling the sorting in the columns.

ProcessSelectedIndexChanged(SelectionPropertyChangedHandlerArgs)

Processes the selected index changed. Adds the first selected index to the selected index

Declaration

protected virtual void ProcessSelectedIndexChanged(SelectionPropertyChangedHandlerArgs args)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	args	SelectionPropertyChangedHandler arguments.

ProcessSelectedItemChanged(SelectionPropertyChangedHandlerArgs)

Adds the firstSelection to the selected item

Declaration

protected virtual void ProcessSelectedItemChanged(SelectionPropertyChangedHandlerArgs args)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	args	SelectionPropertyChangedHandler arguments.

ProcessSelectedItemsChanged(NotifyCollectionChangedEventArgs)

Processes the SelectedItems collection changed to update the selection.

Declaration

public virtual void ProcessSelectedItemsChanged(NotifyCollectionChangedEventArgs e)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	e	The System.Collections.Specialized.NotifyCollectionChangedEventArgs.

ProcessSelectionModeChanged(SelectionPropertyChangedHandlerArgs)

Processes the selection mode changed. When selection mode changed from single/singleDeselect to multiple clears all the selection expect last selection

Declaration

protected virtual void ProcessSelectionModeChanged(SelectionPropertyChangedHandlerArgs args)

Parameters

Type	Name	Description
SelectionPropertyChangedHandlerArgs	args	SelectionPropertyChangedHandler arguments.

ProcessSourceCollectionChanged(NotifyCollectionChangedEventArgs, CollectionChangedReason)

Processes the source collection changed. Based on the collection changed reason.

Declaration

protected virtual void ProcessSourceCollectionChanged(NotifyCollectionChangedEventArgs e, CollectionChangedReason reason)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	e	NotifyCollectionChangedEvent arguments
Syncfusion.SfDataGrid.CollectionChangedReason	reason	CollectionChanged Reason

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

Method which helps to Raise the SelectionChanged event.

Declaration

protected void RaiseSelectionChanged(List<object> addedItems, List<object> removedItems)

Parameters

Type	Name	Description
System.Collections.Generic.List<System.Object>	addedItems	added items
System.Collections.Generic.List<System.Object>	removedItems	removed items

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

Method which helps to raise the selection changing event.

Declaration

protected bool RaiseSelectionChanging(List<object> addedItems, List<object> removedItems)

Parameters

Type	Name	Description
System.Collections.Generic.List<System.Object>	addedItems	added items
System.Collections.Generic.List<System.Object>	removedItems	removed items

Returns

Type	Description
System.Boolean	Returns the boolean value indicating whether to handle Selection Changing event

RefreshSelection()

Refreshes the selections and sets values for the SelectedIndex, SelectedItem, CurrentItem and SelectedItems properties.

Declaration

public void RefreshSelection()

ResetSelection()

Resets the selected index for the rows in SelectedRows collection.

Declaration

public void ResetSelection()

SetSelectionAnimation(VirtualizingCellsControl)

Sets animation for the selected row.

Declaration

protected virtual void SetSelectionAnimation(VirtualizingCellsControl rowElement)

Parameters

Type	Name	Description
VirtualizingCellsControl	rowElement	The view which holds the row data of the selected row

Events

PropertyChanged

Handles the property changed event.

Declaration

public event PropertyChangedEventHandler PropertyChanged

Event Type

Type	Description
System.ComponentModel.PropertyChangedEventHandler

Implements

IGridSelectionController

System.ComponentModel.INotifyPropertyChanged

System.IDisposable