Class TableView

View for tabular data based on a System.Data.DataTable
Inheritance
System.Object
Responder
View
TableView
Implements
System.IDisposable
System.ComponentModel.ISupportInitializeNotification
System.ComponentModel.ISupportInitialize
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)
Namespace: Terminal.Gui
Assembly: Terminal.Gui.dll
Syntax
public class TableView : View, IDisposable, ISupportInitializeNotification, ISupportInitialize

Constructors

TableView()

Initialzies a TableView class using Computed layout. Set the Table property to begin editing
Declaration
public TableView()

TableView(DataTable)

Initialzies a TableView class using Computed layout.
Declaration
public TableView(DataTable table)
Parameters
Type Name Description
System.Data.DataTable table The table to display in the control

Fields

DefaultMaxCellWidth

The default maximum cell width for MaxCellWidth and MaxWidth
Declaration
public const int DefaultMaxCellWidth = 100
Field Value
Type Description
System.Int32

Properties

CellActivationKey

The key which when pressed should trigger CellActivated event. Defaults to Enter.
Declaration
public Key CellActivationKey { get; set; }
Property Value
Type Description
Key

ColumnOffset

Horizontal scroll offset. The index of the first column in Table to display when when rendering the view.
Declaration
public int ColumnOffset { get; set; }
Property Value
Type Description
System.Int32
Remarks
This property allows very wide tables to be rendered with horizontal scrolling

FullRowSelect

True to select the entire row at once. False to select individual cells. Defaults to false
Declaration
public bool FullRowSelect { get; set; }
Property Value
Type Description
System.Boolean

MaxCellWidth

The maximum number of characters to render in any given column. This prevents one long column from pushing out all the others
Declaration
public int MaxCellWidth { get; set; }
Property Value
Type Description
System.Int32

MultiSelect

True to allow regions to be selected
Declaration
public bool MultiSelect { get; set; }
Property Value
Type Description
System.Boolean

MultiSelectedRegions

When MultiSelect is enabled this property contain all rectangles of selected cells. Rectangles describe column/rows selected in Table (not screen coordinates)
Declaration
public Stack<TableSelection> MultiSelectedRegions { get; }
Property Value
Type Description
System.Collections.Generic.Stack<TableSelection>

NullSymbol

The text representation that should be rendered for cells with the value System.DBNull.Value
Declaration
public string NullSymbol { get; set; }
Property Value
Type Description
System.String

RowOffset

Vertical scroll offset. The index of the first row in Table to display in the first non header line of the control when rendering the view.
Declaration
public int RowOffset { get; set; }
Property Value
Type Description
System.Int32

SelectedColumn

The index of System.Data.DataTable.Columns in Table that the user has currently selected
Declaration
public int SelectedColumn { get; set; }
Property Value
Type Description
System.Int32

SelectedRow

The index of System.Data.DataTable.Rows in Table that the user has currently selected
Declaration
public int SelectedRow { get; set; }
Property Value
Type Description
System.Int32

SeparatorSymbol

The symbol to add after each cell value and header value to visually seperate values (if not using vertical gridlines)
Declaration
public char SeparatorSymbol { get; set; }
Property Value
Type Description
System.Char

Style

Contains options for changing how the table is rendered
Declaration
public TableStyle Style { get; set; }
Property Value
Type Description
TableStyle

Table

The data table to render in the view. Setting this property automatically updates and redraws the control.
Declaration
public DataTable Table { get; set; }
Property Value
Type Description
System.Data.DataTable

Methods

CellToScreen(Int32, Int32)

Returns the screen position (relative to the control client area) that the given cell is rendered or null if it is outside the current scroll area or no table is loaded
Declaration
public Point? CellToScreen(int tableColumn, int tableRow)
Parameters
Type Name Description
System.Int32 tableColumn The index of the Table column you are looking for, use System.Data.DataColumn.Ordinal
System.Int32 tableRow The index of the row in Table that you are looking for
Returns
Type Description
System.Nullable<Point>

ChangeSelectionByOffset(Int32, Int32, Boolean)

Moves the SelectedRow and SelectedColumn by the provided offsets. Optionally starting a box selection (see MultiSelect)
Declaration
public void ChangeSelectionByOffset(int offsetX, int offsetY, bool extendExistingSelection)
Parameters
Type Name Description
System.Int32 offsetX Offset in number of columns
System.Int32 offsetY Offset in number of rows
System.Boolean extendExistingSelection True to create a multi cell selection or adjust an existing one

EnsureSelectedCellIsVisible()

Updates scroll offsets to ensure that the selected cell is visible. Has no effect if Table has not been set.
Declaration
public void EnsureSelectedCellIsVisible()
Remarks
Changes will not be immediately visible in the display until you call SetNeedsDisplay()

EnsureValidScrollOffsets()

Updates ColumnOffset and RowOffset where they are outside the bounds of the table (by adjusting them to the nearest existing cell). Has no effect if Table has not been set.
Declaration
public void EnsureValidScrollOffsets()
Remarks
Changes will not be immediately visible in the display until you call SetNeedsDisplay()

EnsureValidSelection()

Updates SelectedColumn, SelectedRow and MultiSelectedRegions where they are outside the bounds of the table (by adjusting them to the nearest existing cell). Has no effect if Table has not been set.
Declaration
public void EnsureValidSelection()
Remarks
Changes will not be immediately visible in the display until you call SetNeedsDisplay()

GetAllSelectedCells()

Returns all cells in any MultiSelectedRegions (if MultiSelect is enabled) and the selected cell
Declaration
public IEnumerable<Point> GetAllSelectedCells()
Returns
Type Description
System.Collections.Generic.IEnumerable<Point>

IsSelected(Int32, Int32)

Returns true if the given cell is selected either because it is the active cell or part of a multi cell selection (e.g. FullRowSelect)
Declaration
public bool IsSelected(int col, int row)
Parameters
Type Name Description
System.Int32 col
System.Int32 row
Returns
Type Description
System.Boolean

MouseEvent(MouseEvent)

Method invoked when a mouse event is generated
Declaration
public override bool MouseEvent(MouseEvent me)
Parameters
Type Name Description
MouseEvent me
Returns
Type Description
System.Boolean true, if the event was handled, false otherwise.
Overrides

OnCellActivated(CellActivatedEventArgs)

Invokes the CellActivated event
Declaration
protected virtual void OnCellActivated(CellActivatedEventArgs args)
Parameters
Type Name Description
CellActivatedEventArgs args

OnSelectedCellChanged(SelectedCellChangedEventArgs)

Invokes the SelectedCellChanged event
Declaration
protected virtual void OnSelectedCellChanged(SelectedCellChangedEventArgs args)
Parameters
Type Name Description
SelectedCellChangedEventArgs args

PositionCursor()

Positions the cursor in the area of the screen in which the start of the active cell is rendered. Calls base implementation if active cell is not visible due to scrolling or table is loaded etc
Declaration
public override void PositionCursor()
Overrides

ProcessKey(KeyEvent)

If the view is focused, gives the view a chance to process the keystroke.
Declaration
public override bool ProcessKey(KeyEvent keyEvent)
Parameters
Type Name Description
KeyEvent keyEvent Contains the details about the key that produced the event.
Returns
Type Description
System.Boolean
Overrides
Remarks

Views can override this method if they are interested in processing the given keystroke. If they consume the keystroke, they must return true to stop the keystroke from being processed by other widgets or consumed by the widget engine. If they return false, the keystroke will be passed using the ProcessColdKey method to other views to process.

The View implementation does nothing but return false, so it is not necessary to call base.ProcessKey if you derive directly from View, but you should if you derive other View subclasses.

Redraw(Rect)

Redraws this view and its subviews; only redraws the views that have been flagged for a re-display.
Declaration
public override void Redraw(Rect bounds)
Parameters
Type Name Description
Rect bounds The bounds (view-relative region) to redraw.
Overrides
Remarks

Always use Bounds (view-relative) when calling Redraw(Rect), NOT Frame (superview-relative).

Views should set the color that they want to use on entry, as otherwise this will inherit the last color that was set globally on the driver.

Overrides of Redraw(Rect) must ensure they do not set Driver.Clip to a clip region larger than the region parameter.

ScreenToCell(Int32, Int32)

Returns the column and row of Table that corresponds to a given point on the screen (relative to the control client area). Returns null if the point is in the header, no table is loaded or outside the control bounds
Declaration
public Point? ScreenToCell(int clientX, int clientY)
Parameters
Type Name Description
System.Int32 clientX X offset from the top left of the control
System.Int32 clientY Y offset from the top left of the control
Returns
Type Description
System.Nullable<Point>

SelectAll()

When MultiSelect is on, creates selection over all cells in the table (replacing any old selection regions)
Declaration
public void SelectAll()

SetSelection(Int32, Int32, Boolean)

Moves the SelectedRow and SelectedColumn to the given col/row in Table. Optionally starting a box selection (see MultiSelect)
Declaration
public void SetSelection(int col, int row, bool extendExistingSelection)
Parameters
Type Name Description
System.Int32 col
System.Int32 row
System.Boolean extendExistingSelection True to create a multi cell selection or adjust an existing one

Update()

Updates the view to reflect changes to Table and to (ColumnOffset / RowOffset) etc
Declaration
public void Update()
Remarks
This always calls SetNeedsDisplay()

Events

CellActivated

This event is raised when a cell is activated e.g. by double clicking or pressing CellActivationKey
Declaration
public event Action<CellActivatedEventArgs> CellActivated
Event Type
Type Description
System.Action<CellActivatedEventArgs>

SelectedCellChanged

This event is raised when the selected cell in the table changes.
Declaration
public event Action<SelectedCellChangedEventArgs> SelectedCellChanged
Event Type
Type Description
System.Action<SelectedCellChangedEventArgs>

Implements

System.IDisposable
System.ComponentModel.ISupportInitializeNotification
System.ComponentModel.ISupportInitialize