Class GridRichTextBoxCellRenderer

Implements the renderer part of a rich text cell.

Inheritance
System.Object
NonFinalizeDisposable
GridCellRendererBase
GridRichTextBoxCellRenderer
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: Syncfusion.Windows.Forms.Grid
Assembly: Syncfusion.Grid.Windows.dll
Syntax
public class GridRichTextBoxCellRenderer : GridCellRendererBase, IQueryFocusInside, IGridDropDownCell, IPopupParent, IPopupItem, IDisposable
Remarks

Use "RichText" as identifier in CellType of a cells GridStyleInfo to associate this cell type with a cell.

This renderer supports editing the contents of the rich text with a drop-down panel. When the user drops the panel, a GridRichTextEntryPanel is shown and the user can format the text and then accept changes by pressing "Save" button.

The following table lists some characteristics about the RichText cell type.

ItemDescription
CellTypeRichText
RendererGridRichTextBoxCellRenderer
ModelGridRichTextBoxCellModel
XP Themes SupportYes
InteractiveEdit with DropDown Panel
DropDown ControlGridRichTextEntryPanel
Floating SupportNo
Base TypeGridStaticCellRenderer

The cell's behavior and appearance can be customized with the following properties of the GridStyleInfo class.

PropertyNameDescription
BaseStyle (System.String)The base style for this style instance with default values for properties that are not initialized for this style object. (Default: String.Empty)
Borders (GridBordersInfo)Top, left, bottom, and right border settings. (Default: GridBordersInfo.Default)
CellAppearance (GridCellAppearance)Specifies if cell edges shall be drawn raised, sunken, or flat (default). (Default: GridCellAppearance.Flat)
CellTipText (System.String)ToolTip text to be displayed when user hovers mouse over cell. (Default: String.Empty)
CellType (System.String)RichText (Default: TextBox)
CellValue (System.Object)This property holds the cell value. Although the cell value is typically a string, it can also be any other primitive type such as int, byte, enum, or any custom type that is derived from System.Object. (Default: String.Empty)
CellValueType (System.Type)Specifies the preferred System.Type for cell values. When you assign a value to the GridStyleInfo object, the value will be converted to this type. If the value cannot be converted, Error will contain error information. (Default: NULL)
Clickable (System.Boolean)Specifies if the user can click on any cell button elements in this renderer. (Default: True)
CultureInfo (System.Globalization.CultureInfo)The culture information holds rules for parsing and formatting the cell's value. (Default: NULL)
Enabled (System.Boolean)Specifies if the cell can be activated as current cell or if the cell should be skipped when moving the current cell. (Default: True)
Error (System.String)Holds error information if a value could not be converted to the System.Type specified with CellValueType. (Default: String.Empty)
Interior (BrushInfo) Lets you specify a solid backColor, gradient, or pattern style with both back and foreColor for a cell's background. (Default: SystemColors.Window)
ReadOnly (System.Boolean)Specifies if cell contents can be modified by the user. You can programmatically change Read-only cells by setting DiscardReadOnly to True. (Default: False)
ShowButtons (GridShowButtons)Specifies when to show or display the cell buttons. Possible choices are: show the button only for the current cell, always show buttons, or never show buttons. (Default: GridShowButtons.Show)
Text (System.String)Gets / sets the value as a string. If a CellValueType is specified, the text will be parsed and converted to the type specified with CellValueType using any CultureInfo information. (Default: String.Empty)
Themed (System.Boolean)Specifies if cell should be drawn using Windows XP themes when ThemesEnabled has been set. (Default: True)
ValidateValue (GridCellValidateValueInfo)Holds validation rules for the cell value that are being checked before any user changes are committed to the grid cell's style object. (Default: NULL)

Constructors

GridRichTextBoxCellRenderer(GridControlBase, GridCellModelBase)

Initializes a new GridRichTextBoxCellRenderer object for the given GridControlBase and GridCellModelBase.

Declaration
public GridRichTextBoxCellRenderer(GridControlBase grid, GridCellModelBase cellModel)
Parameters
Type Name Description
GridControlBase grid

The GridControlBase that displays this cell renderer.
GridCellModelBase cellModel

The GridCellModelBase that holds data for this cell renderer that should be shared among views.
Remarks

References to GridControlBase and GridCellModelBase will be saved.

Properties

DropDownContainer

Gets the container where you can insert child controls to be displayed as drop-down part for your cell.

Declaration
public GridDropDownContainer DropDownContainer { get; }
Property Value
Type
GridDropDownContainer

Methods

DropDownContainerCloseDropDown(Object, PopupClosedEventArgs)

Will be called to indicate that the popup child was closed.

Declaration
public override void DropDownContainerCloseDropDown(object sender, PopupClosedEventArgs e)
Parameters
Type Name Description
System.Object sender

The child that was closed.
PopupClosedEventArgs e

The event data with a PopupCloseType value.
Overrides

DropDownContainerShowedDropDown(Object, EventArgs)

Occurs after the popup has been dropped-down and made visible.

Declaration
public override void DropDownContainerShowedDropDown(object sender, EventArgs e)
Parameters
Type Name Description
System.Object sender

The source of the event.
System.EventArgs e

The System.EventArgsthat contains event data.
Overrides

DropDownContainerShowingDropDown(Object, CancelEventArgs)

Occurs when the drop-down container is about to be shown.

Declaration
public override void DropDownContainerShowingDropDown(object sender, CancelEventArgs e)
Parameters
Type Name Description
System.Object sender

The source of the event.
System.ComponentModel.CancelEventArgs e

Event data.
Overrides

InitializeDropDownContainer()

Called to initialize contents of the drop-down container for the first time.

Declaration
protected override void InitializeDropDownContainer()
Overrides

OnBeginEdit()

Used to change the behavior of the OnBeginEdit event

Declaration
protected override void OnBeginEdit()
Overrides

OnButtonClicked(Int32, Int32, Int32)

Used to change the behavior of the OnButtonClicked event

Declaration
protected override void OnButtonClicked(int rowIndex, int colIndex, int button)
Parameters
Type Name Description
System.Int32 rowIndex

Represents the row value
System.Int32 colIndex

Represents the column value
System.Int32 button

Used to get the value of button
Overrides

OnClick(Int32, Int32, MouseEventArgs)

This is called from GridSelectCellsMouseController when the user clicked inside a cell.

Declaration
protected override void OnClick(int rowIndex, int colIndex, MouseEventArgs e)
Parameters
Type Name Description
System.Int32 rowIndex

The row index.
System.Int32 colIndex

The column index.
System.Windows.Forms.MouseEventArgs e

The System.Windows.Forms.MouseEventArgsthat contains event data.
Overrides

OnDeactivating()

Used to change the behavior of the OnDeactivating event.

Declaration
protected override bool OnDeactivating()
Returns
Type
System.Boolean
Overrides

OnDraw(Graphics, Rectangle, Int32, Int32, GridStyleInfo)

This method is called from the cell renderer's draw method to draw the contents of the client bounds for the cell, e.g. the text for a static cell.

Declaration
protected override void OnDraw(Graphics g, Rectangle clientRectangle, int rowIndex, int colIndex, GridStyleInfo style)
Parameters
Type Name Description
System.Drawing.Graphics g

Points to the device context.
System.Drawing.Rectangle clientRectangle

Specifies the client rectangle. It is the cell rectangle without buttons and borders.
System.Int32 rowIndex

Specifies the row id.
System.Int32 colIndex

Specifies the column id.
GridStyleInfo style

A reference to the style object of the cell.
Overrides
Remarks

When drawing cells, it is necessary to determine if the specified cell (with rowIndex and colIndex) is the current cell and if it is active.

If your control is associated with a control and supports in-place editing and the specified cell is the current cell, you should position the control. Take a look at the GridTextBoxCellRenderer implementation of this method for an example.

Otherwise, you can simply draw the cell.

OnEditingComplete()

Used to change the behavior of the OnEditingComplete event

Declaration
protected override void OnEditingComplete()
Overrides

OnEndEdit()

Used to change the behavior of the OnEndEdit event

Declaration
protected override void OnEndEdit()
Overrides

OnInitialize(Int32, Int32)

This method gets called from the cell renderer's initialize method. Override this method if you need to any initialization for the current cell.

Declaration
protected override void OnInitialize(int rowIndex, int colIndex)
Parameters
Type Name Description
System.Int32 rowIndex

The row index.
System.Int32 colIndex

The column index.
Overrides

OnSaveChanges()

This method is called from GridCurrentCell.ConfirmChanges when the current cell was marked as modified. Any drop-downs have been closed at this time. It saves changes for the current cell.

Declaration
protected override bool OnSaveChanges()
Returns
Type Description
System.Boolean

True if changes were saved successfully.
Overrides

PanelCancel(Object, EventArgs)

Event handler for the Cancel event of the GridRichTextEntryPanel.

Declaration
protected virtual void PanelCancel(object sender, EventArgs e)
Parameters
Type Name Description
System.Object sender

The source of the event.
System.EventArgs e

Event data.

PanelKeyDown(Object, KeyEventArgs)

Event handler for the KeyDown event of the GridRichTextEntryPanel.

Declaration
protected virtual void PanelKeyDown(object sender, KeyEventArgs e)
Parameters
Type Name Description
System.Object sender

The source of the event.
System.Windows.Forms.KeyEventArgs e

A KeyEventArgs that contains the event data.

PanelSave(Object, EventArgs)

Event handler for the Save event of the GridRichTextEntryPanel.

Declaration
protected virtual void PanelSave(object sender, EventArgs e)
Parameters
Type Name Description
System.Object sender

The source of the event.
System.EventArgs e

Event data.

Implements

System.IDisposable