Class GridCurrentCellManager

Represents a class that manages the current cell operation in SfDataGrid.

Inheritance

System.Object

GridCurrentCellManager

Implements

System.IDisposable

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: Syncfusion.UI.Xaml.Grid

Assembly: Syncfusion.SfGrid.WPF.dll

Syntax

public class GridCurrentCellManager : IDisposable

Constructors

GridCurrentCellManager(SfDataGrid)

Initializes a new instance of GridCurrentCellManager class.

Declaration

public GridCurrentCellManager(SfDataGrid grid)

Parameters

Type	Name	Description
SfDataGrid	grid	An instance of SfDataGrid class.

Fields

dataGrid

Gets or sets an instance of SfDataGrid class.

Declaration

protected SfDataGrid dataGrid

Field Value

Type
SfDataGrid

ResumeUpdates

Gets or sets the action that encapsulates the ResumeUpdates() method.

Declaration

protected Action ResumeUpdates

Field Value

Type
System.Action

SuspendUpdates

Gets or sets the action that encapsulates the SuspendUpdates() method.

Declaration

protected Action SuspendUpdates

Field Value

Type
System.Action

Properties

CurrentCell

Gets or sets the Current cell.

Declaration

public DataColumnBase CurrentCell { get; set; }

Property Value

Type
DataColumnBase

CurrentRowColumnIndex

Gets the current RowColumnIndex of the row or cell that contains the current cell.

Declaration

public RowColumnIndex CurrentRowColumnIndex { get; }

Property Value

Type
RowColumnIndex

CurrentUnboundRowInfo

Gets or sets the GridUnBoundRow of corresponding unbound row that contains current cell.

Declaration

protected GridUnBoundRow CurrentUnboundRowInfo { get; set; }

Property Value

Type	Description
GridUnBoundRow	The GridUnBoundRow of unbound row that contains current cell. Returns null if there is no current cell in unbound row.

HasCurrentCell

Returns a value that indicates whether the SfDataGrid that contains the currently active cell.

Declaration

public bool HasCurrentCell { get; }

Property Value

Type
System.Boolean

IsAddNewRow

Gets or sets a value that indicates whether the current cell is placed on the AddNewRow.

Declaration

protected bool IsAddNewRow { get; set; }

Property Value

Type	Description
System.Boolean	true if the current cell is placed on the AddNewRow; otherwise, false.

IsFilterRow

Gets or sets a value that indicates whether the current cell is placed on the FilterRow.

Declaration

protected bool IsFilterRow { get; set; }

Property Value

Type	Description
System.Boolean	true if the current cell is placed on the FilterRow; otherwise, false.

IsUnBoundRow

Declaration

protected bool IsUnBoundRow { get; set; }

Property Value

Type
System.Boolean

Methods

AllowCurrentCellSelection(RowColumnIndex)

Determines whether the selection is allowed for the specified rowcolumnindex of current cell.

Declaration

protected bool AllowCurrentCellSelection(RowColumnIndex currentCellIndex)

Parameters

Type	Name	Description
RowColumnIndex	currentCellIndex	The corresponding rowcolumnindex.

Returns

Type	Description
System.Boolean	Returns true if the selection is allowed to the current cell; otherwise , false.

AllowFocus(RowColumnIndex)

Determines whether the focus is allowed for the specified rowcolumnindex .

Declaration

protected bool AllowFocus(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The corresponding rowColumnIndex.

Returns

Type	Description
System.Boolean	Returns true if the focus is allowed for the specified rowcolumnindex; otherwise, false.

BeginEdit()

Initiates the edit operation on the current cell.

Declaration

public bool BeginEdit()

Returns

Type	Description
System.Boolean	Returns true if the current cell entering into edit mode; otherwise, false .

CanSelectRowOrCell(RowColumnIndex)

Determines whether the selection can be processed for row or cell corresponding to the specified row and column index.

Declaration

protected bool CanSelectRowOrCell(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The corresponding row and column index to perform row or cell selection.

Returns

Type	Description
System.Boolean	Returns true if the row or cell selection can be processed; otherwise, false.

CheckValidationAndEndEdit()

Determines whether the validation is applied to the current cell.

Declaration

public bool CheckValidationAndEndEdit()

Returns

Type	Description
System.Boolean	Returns true if the current cell validation is successful and the cell is allowed for end edit operation; otherwise, false.

Dispose()

Disposes all the resources used by the VisualContainer class.

Declaration

public void Dispose()

Dispose(Boolean)

Disposes all the resources used by the VisualContainer class.

Declaration

protected virtual void Dispose(bool isDisposing)

Parameters

Type	Name	Description
System.Boolean	isDisposing	Indicates whether the call is from Dispose method or from a finalizer.

EndEdit(Boolean)

Ends the edit operation on the current cell.

Declaration

public bool EndEdit(bool canCommit = true)

Parameters

Type	Name	Description
System.Boolean	canCommit	Specifies whether the value can be committed to the current cell.

Returns

Type	Description
System.Boolean	Returns true if the edit operation is ended; otherwise, false.

GetFirstCellIndex(FlowDirection)

Gets the index of first cell in SfDataGrid for the specified flow direction.

Declaration

protected int GetFirstCellIndex(FlowDirection direction)

Parameters

Type	Name	Description
System.Windows.FlowDirection	direction	Contains the direction to get first cell index in SfDataGrid.

Returns

Type	Description
System.Int32	The first cell index in SfDataGrid for the specified flow direction.

GetGridColumn(RowColumnIndex)

Gets the column for the specified RowColumnIndex.

Declaration

protected GridColumn GetGridColumn(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The corresponding row and column index to get the column.

Returns

Type	Description
GridColumn	Returns the corresponding GridColumn for the specified row and column index; otherwise , return null.

GetLastCellIndex(FlowDirection)

Gets the index of the last focused cell corresponding to the specified direction.

Declaration

protected int GetLastCellIndex(FlowDirection direction)

Parameters

Type	Name	Description
System.Windows.FlowDirection	direction	The corresponding direction of the cell to get its index.

Returns

Type	Description
System.Int32	Returns the corresponding index of last focused cell.

GetMergedColumn(GridColumn, Int32, MoveDirection)

Gets the merged column for the specified range.

Declaration

protected GridColumn GetMergedColumn(GridColumn gridcolumn, int columnIndex, MoveDirection direction)

Parameters

Type	Name	Description
GridColumn	gridcolumn	The corresponding grid column to get merged column.
System.Int32	columnIndex	The corresponding column index to get merged column
MoveDirection	direction	Contains the corresponding direction to get merged column.

Returns

Type	Description
GridColumn	Returns the corresponding merged column based on the specified range.

GetNextCellIndex(Int32, Int32)

Gets the index of next focused cell corresponding to the specified row and column index.

Declaration

protected int GetNextCellIndex(int rowIndex, int columnIndex)

Parameters

Type	Name	Description
System.Int32	rowIndex	The corresponding row index to get the next cell index.
System.Int32	columnIndex	The corresponding column index to get the next cell index.

Returns

Type	Description
System.Int32	Returns the index of next focused cell.

GetNextCellIndex(FlowDirection)

Gets the index of the next focused cell corresponding to the specified direction.

Declaration

protected int GetNextCellIndex(FlowDirection flowdirection)

Parameters

Type	Name	Description
System.Windows.FlowDirection	flowdirection	The corresponding direction to get the index of next focused cell.

Returns

Type	Description
System.Int32	Returns the index of next focused cell.

GetNextFocusGridColumn(Int32, MoveDirection)

Gets the next focused grid column for the specified column index and direction.

Declaration

protected GridColumn GetNextFocusGridColumn(int columnIndex, MoveDirection direction)

Parameters

Type	Name	Description
System.Int32	columnIndex	The corresponding column index to get the next focused column.
MoveDirection	direction	Specifies flow direction to get the next focused column.

Returns

Type	Description
GridColumn	The next focused GridColumn for specified column index and direction. Returns null, if the specified column index is last column.

GetNextPageIndex(Int32, Int32, Boolean)

Gets the index of the row positioned at the end of next page that is not currently in view of SfDataGrid.

Declaration

protected int GetNextPageIndex(int rowIndex, int columnIndex, bool scrolling = false)

Parameters

Type	Name	Description
System.Int32	rowIndex	The corresponding row index to get next page index.
System.Int32	columnIndex	The corresponding column index to get next page index.
System.Boolean	scrolling	Indicates whether the entire cell need to be scrolled in view , when the specified row index is merged cell.

Returns

Type	Description
System.Int32	The end row index of next page.

GetNextRowIndex(Int32)

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

Declaration

protected int GetNextRowIndex(int rowIndex)

Parameters

Type	Name	Description
System.Int32	rowIndex	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.

GetNextRowIndex(Int32, Int32, Boolean)

Gets the next focused row index corresponding to the specified row and column index.

Declaration

protected int GetNextRowIndex(int rowIndex, int columnIndex, bool scrolling = false)

Parameters

Type	Name	Description
System.Int32	rowIndex	The corresponding row index to get next focused row index.
System.Int32	columnIndex	The corresponding column index to get next focused row index.
System.Boolean	scrolling	Indicates whether the entire cell need to be scrolled in view , when the specified row index is merged cell.

Returns

Type	Description
System.Int32	The next focused row index of the specified row and column index.

GetPreviousCellIndex(FlowDirection)

Gets the index of previous cell corresponding to the specified flow direction.

Declaration

protected int GetPreviousCellIndex(FlowDirection flowdirection)

Parameters

Type	Name	Description
System.Windows.FlowDirection	flowdirection	The corresponding direction to get previous cell index.

Returns

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

GetPreviousPageIndex(Int32, Int32)

Gets the index of the row positioned at the start of the previous page that is not currently in view of SfDataGrid.

Declaration

protected int GetPreviousPageIndex(int rowIndex, int columnIndex)

Parameters

Type	Name	Description
System.Int32	rowIndex	The corresponding row index to get previous page index.
System.Int32	columnIndex	The corresponding column index to get previous page index.

Returns

Type	Description
System.Int32	The start index of previous page.

GetPreviousRowIndex(Int32)

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

Declaration

protected int GetPreviousRowIndex(int rowIndex)

Parameters

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

Returns

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

GetPreviousRowIndex(Int32, Int32)

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

Declaration

protected int GetPreviousRowIndex(int rowIndex, int columnIndex)

Parameters

Type	Name	Description
System.Int32	rowIndex	The corresponding row index to get the index of previous row.
System.Int32	columnIndex	The corresponding column index to get the index of previous row.

Returns

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

HandleColumnsCollectionChanged(NotifyCollectionChangedEventArgs)

Handles the current cell selection when the columns is added or removed at run time.

Declaration

public virtual void HandleColumnsCollectionChanged(NotifyCollectionChangedEventArgs args)

Parameters

Type	Name	Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs	args	Contains the data related to the collection changed action in columns collection.

HandleKeyDown(KeyEventArgs)

Handles the selection for the keyboard interactions that are performed current cell.

Declaration

public virtual bool HandleKeyDown(KeyEventArgs args)

Parameters

Type	Name	Description
System.Windows.Input.KeyEventArgs	args	Contains information about the key that was pressed.

Returns

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

HandleKeyNavigation(KeyEventArgs, RowColumnIndex)

Handles the selection when the key navigation is processed on the current cell.

Declaration

public virtual bool HandleKeyNavigation(KeyEventArgs args, RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
System.Windows.Input.KeyEventArgs	args	Contains information about the key that was pressed.
RowColumnIndex	rowColumnIndex	The corresponding row and column index where the key navigation occurs.

Returns

Type	Description
System.Boolean	Returns true if the navigation processed; otherwise , false.

Remarks

Override this method , to customize navigation behavior of current cell in SfDataGrid.

HandlePointerOperation(MouseEventArgs, RowColumnIndex)

Handles the current cell selection when any of PointerOperation performed in cell.

Declaration

public virtual bool HandlePointerOperation(MouseEventArgs args, RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
System.Windows.Input.MouseEventArgs	args	Contains the data related to the mouse action.
RowColumnIndex	rowColumnIndex	The corresponding rowColumnIndex of the cell.

Returns

Type	Description
System.Boolean	Returns true if the pointer operation should be handled on the current cell; otherwise, false.

ProcessColumnRemoveAndInsert(GridColumn, Int32, NotifyCollectionChangedAction)

Processes the current cell when column added or removed at runtime.

Declaration

protected void ProcessColumnRemoveAndInsert(GridColumn changedColumn, int changedIndex, NotifyCollectionChangedAction action)

Parameters

Type	Name	Description
GridColumn	changedColumn	Contains the corresponding changed column.
System.Int32	changedIndex	The corresponding index of the column.
System.Collections.Specialized.NotifyCollectionChangedAction	action	Corresponding collection changed action performed on columns.

ProcessCurrentCellSelection(RowColumnIndex, ActivationTrigger)

Processes the selection for current cell corresponding to its rowcolumnindex and activation trigger.

Declaration

protected virtual bool ProcessCurrentCellSelection(RowColumnIndex newRowColumnIndex, ActivationTrigger activationTriggger)

Parameters

Type	Name	Description
RowColumnIndex	newRowColumnIndex	The corresponding rowcolumnindex to process the current cell selection.
ActivationTrigger	activationTriggger	Indicates how the current cell is activated.

Returns

Type	Description
System.Boolean	Returns true if the selection is processed on the current cell; otherwise, false.

ProcessOnDoubleTapped(MouseButtonEventArgs)

Processes the selection when the mouse point is double tapped on the current cell.

Declaration

public virtual void ProcessOnDoubleTapped(MouseButtonEventArgs e)

Parameters

Type	Name	Description
System.Windows.Input.MouseButtonEventArgs	e	Contains the data related to the double tap interaction.

Remarks

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

ProcessOnTapped(MouseButtonEventArgs, RowColumnIndex)

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

Declaration

public virtual void ProcessOnTapped(MouseButtonEventArgs e, RowColumnIndex currentRowColumnIndex)

Parameters

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

Remarks

This method invoked to process selection and end edit the current cell when EditTrigger is OnTap.

RaiseCurrentCellActivatedEvent(RowColumnIndex, RowColumnIndex, ActivationTrigger)

Raises the CurrentCellActivated event in SfDataGrid.

Declaration

protected void RaiseCurrentCellActivatedEvent(RowColumnIndex rowColumnIndex, RowColumnIndex previousRowColumnIndex, ActivationTrigger activationTrigger)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex
RowColumnIndex	previousRowColumnIndex	The rowcolumnindex of the precious active cell.
ActivationTrigger	activationTrigger	The activation trigger for current cell.

RaiseCurrentCellActivatingEvent(RowColumnIndex, RowColumnIndex, ActivationTrigger)

Raises the CurrentCellActivating event in SfDataGrid.

Declaration

protected bool RaiseCurrentCellActivatingEvent(RowColumnIndex previousRowColumnIndex, RowColumnIndex currentRowColumnIndex, ActivationTrigger activationTrigger)

Parameters

Type	Name	Description
RowColumnIndex	previousRowColumnIndex	The rowcolumnindex of the precious active cell.
RowColumnIndex	currentRowColumnIndex	The rowcolumnindex of the currently active cell.
ActivationTrigger	activationTrigger	The activation trigger for current cell.

Returns

Type	Description
System.Boolean	Returns true if the CurrentCellActivating event is raised; otherwise, false.

RaiseCurrentCellBeginEditEvent(RowColumnIndex, GridColumn)

Raises the CurrentCellBeginEdit event.

Declaration

protected bool RaiseCurrentCellBeginEditEvent(RowColumnIndex rowColumnIndex, GridColumn gridColumn)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The corresponding rowcolumnindex of the current cell.
GridColumn	gridColumn	The corresponding column that contains the current cell.

Returns

Type	Description
System.Boolean	Returns true if the CurrentCellBeginEdit event is raised; otherwise, false.

RaiseCurrentCellEndEditEvent(RowColumnIndex)

Raises the CurrentCellEndEdit event.

Declaration

protected void RaiseCurrentCellEndEditEvent(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The rowcolumnindex of the current cell to raise the event.

RaiseValidationAndEndEdit(Boolean)

Declaration

protected bool RaiseValidationAndEndEdit(bool canCommit = false)

Parameters

Type	Name	Description
System.Boolean	canCommit

Returns

Type
System.Boolean

RemoveCurrentCell(RowColumnIndex)

Removes the current cell based on the specified row and column index.

Declaration

protected void RemoveCurrentCell(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The corresponding rowcolumnindex to remove the current cell.

Remarks

This method helps to remove the current cell corresponding to the specified row and column index.

ScrollInView(RowColumnIndex)

Scrolls the SfDataGrid vertically and horizontally to display a cell for the specified RowColumnIndex.

Declaration

protected void ScrollInView(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	Specifies the rowColumnIndex of the cell to bring into view.

ScrollInViewFromLeft(Int32)

Scrolls the specified column index in to view from the left direction to the SfDataGrid.

Declaration

public void ScrollInViewFromLeft(int columnIndex)

Parameters

Type	Name	Description
System.Int32	columnIndex	The corresponding column index to scroll the column into view.

Remarks

This method helps to scroll the column into view when the column is not present in the view area of SfDataGrid.

ScrollInViewFromRight(Int32)

Scrolls the specified column index in to view from the right direction to the SfDataGrid.

Declaration

public void ScrollInViewFromRight(int columnIndex)

Parameters

Type	Name	Description
System.Int32	columnIndex	The corresponding column index to scroll the column into view.

Remarks

This method helps to scroll the column into view if it is not present in the view area of SfDataGrid.

ScrollToRowIndex(Int32)

Scrolls the row in to view at the specified row index.

Declaration

protected void ScrollToRowIndex(int rowIndex)

Parameters

Type	Name	Description
System.Int32	rowIndex	The zero-based row index to scroll the row into view.

SelectCurrentCell(RowColumnIndex, Boolean)

Selects the current cell for the specified row and column index.

Declaration

protected void SelectCurrentCell(RowColumnIndex rowColumnIndex, bool setFocus = true)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The corresponding rowcolumnindex to select the current cell.
System.Boolean	setFocus	Decides whether the focus is set to current cell.

SetCurrentRowColumnIndex(RowColumnIndex)

Sets the current rowcolumnindex.

Declaration

protected void SetCurrentRowColumnIndex(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex	The rowcolumnindex.

UpdateGridProperties(RowColumnIndex)

Updates the Grid properties.

Declaration

protected void UpdateGridProperties(RowColumnIndex rowColumnIndex)

Parameters

Type	Name	Description
RowColumnIndex	rowColumnIndex

Implements

System.IDisposable