Class GridTextBoxCellRenderer

Implements the renderer part of a text box cell.

Inheritance
System.Object
NonFinalizeDisposable
GridCellRendererBase
GridStaticCellRenderer
GridTextBoxCellRenderer
ButtonEditCellRenderer
LinkLabelCellRenderer
PercentTextBoxCellRenderer
GridDataBoundTreeCellRenderer
GridDropDownCellRenderer
GridFormulaCellRenderer
GridNumericUpDownCellRenderer
GridOriginalTextBoxCellRenderer
PivotGridTotalCellRenderer
PivotGridTotalValueCellRenderer
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Syncfusion.Windows.Forms.Grid
Assembly: Syncfusion.Grid.Windows.dll
Syntax
public class GridTextBoxCellRenderer : GridStaticCellRenderer, IQueryFocusInside, IGridDropDownCell, IPopupParent, IPopupItem, IDisposable
Remarks

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

A renderer is created for each GridCellModelBase and GridControlBase. There can be several renderers associated with one GridTextBoxCellModel if several views display the same GridModel.

The following table lists some characteristics about the text box cell type.

ItemDescription
CellTypeText Box
RendererGridTextBoxCellRenderer
ModelGridTextBoxCellModel
XP Themes SupportNA
InteractiveEdit with Text Input
ControlGridTextBoxControl
Floating SupportBoth
Base TypeGridStaticCellRenderer

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

PropertyNameDescription
AllowEnter (System.Boolean)Gets / sets if pressing the <Enter>-Key should insert a new line into the edited text. (Default: False)
AutoSize (System.Boolean)Gets / sets if the cell height should automatically increase when the edited text does not fit into the cell and WrapText is True. If WrapText is False, AutoSize will affect the column width. (Default: False)
BackgroundImage (System.Drawing.Image)Gets / sets the image that the cell displays as background. (Default: null)
BackgroundImageMode (GridBackgroundImageMode)Indicates how the background image is displayed. (Default: GridBackgroundImageMode)
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)Text Box (Default: Text Box)
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)
CultureInfo (System.Globalization.CultureInfo)The culture information holds rules for parsing and formatting the cells 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)
FloatCell (System.Boolean)Gets / sets if text can float into the boundaries of a neighboring cell. (Default: True)
FloodCell (System.Boolean)Gets / sets if this cell can be flooded by a previous cell. (Default: True)
Font (GridFontInfo)The font for drawing text. (Default: GridFontInfo.Default)
Format (System.String)Gets / sets the format mask for formatting the cell value. You can specify numeric format strings, date format strings, or enumeration format strings as discussed in the section "Format Specifiers and Format Providers" of the .NET Framework Developers Guide (see ms-help://MS.VSCC/MS.MSDNVS/cpguide/html/cpconformatspecifiersformatproviders.htm) (Default: String.Empty)
HorizontalAlignment (GridHorizontalAlignment)Specifies horizontal alignment of text in the cell. (Default: GridHorizontalAlignment.Left)
HotkeyPrefix (System.Drawing.Text.HotkeyPrefix)Specifies how hot-key prefixes should be displayed. Hot-keys are indicated in text with an '&' (ampersand). When you enable hot-key prefix, the specific characters can be displayed underlined or regular. The '&' will not be displayed. (Default: HotkeyPrefix.Show)
ImageIndex (System.Int32)Specifies an index for an image in the ImageList of a GridStyleInfo instance. (Default: -1)
ImageList (System.Windows.Forms.ImageList)The ImageList that holds a collection of images. Cells can choose images with the ImageIndex property in a GridStyleInfo instance. (Default: NULL)
Interior (BrushInfo)Lets you specify a solid back color, gradient, or pattern style with both back and fore color for a cell's background. (Default: SystemColors.Window)
MaxLength (System.Int32)Limits the number of characters the user can type into the cell. Note: When selecting text from list or when pasting text, the text can be longer. Additional validation is necessary on your side. (Default: 0)
MergeCell (GridMergeCellDirection)Specifies merge behavior for an individual cell when merging cells feature has been enabled in a GridModel with MergeCellsMode. (Default: GridMergeCellDirection.None)
ReadOnly (System.Boolean)Specifies if cell contents can be modified by the user. You can programatically change Read-only cells by setting DiscardReadOnly to True. (Default: False)
StrictValueType (System.Boolean)Indicates whether an exception should be thrown in the ApplyFormattedText(String) method if the formatted text can not be parsed or converted to the type specified with CellValueType (Default: true)
Text (System.String)Gets / sets the value as a string. If a CellValueType is specified, the text will be parsed or converted to the type specified with CellValueType using any CultureInfo information. (Default: String.Empty)
TextColor (System.Drawing.Color)Lets you specify the color for drawing the cell text. (Default: SystemColors.WindowText)
TextMargins (GridMarginsInfo)Holds text margins in pixels. When drawing a cell this specifies the empty area between the text rectangle and the client rectangle of the cell without borders and cell buttons. (Default: GridMarginsInfo.Default)
Trimming (System.Drawing.StringTrimming)Indicates how text is trimmed when it exceeds the edges of the cell text rectangle. (Default: StringTrimming.Character)
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)
VerticalAlignment (GridVerticalAlignment)Specifies vertical alignment of text in the cell. (Default: GridVerticalAlignment.Top)
VerticalScrollbar (System.Boolean)Specifies if text box should show a vertical scrollbar when text is being edited and does not fit in cell. WrapText must be initialized to true. (Default: false)
WrapText (System.Boolean)Specifies if text should be wrapped when it does not fit into a single line. (Default: True)

Constructors

GridTextBoxCellRenderer(GridControlBase, GridCellModelBase)

Initializes a new instance of the GridTextBoxCellRenderer class, for the given GridControlBase and GridCellModelBase.

Declaration
public GridTextBoxCellRenderer(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

DisableTextBox

Gets or sets a value indicating whether the text box should be hidden. This is useful for derived cell renderers that want to be able to switch between a edit-mode and static mode, e.g. a drop-down list does not need to have text input capabilities.

Declaration
public bool DisableTextBox { get; set; }
Property Value
Type Description
System.Boolean
Remarks

When disabled, you can still call TextBoxText to change the text for the active cell. In this case TextBoxText will save the text in a member variable and simply draw the text by itself.

IgnoreTextBoxChanged

Gets or sets a value indicating whether TextBoxChanged events should be ignored.

Declaration
public bool IgnoreTextBoxChanged { get; set; }
Property Value
Type Description
System.Boolean

InNotifyCurrentCellChangedException

Gets a value indicating whether InNotifyCurrentCellChangedException. Internal only.

Declaration
public bool InNotifyCurrentCellChangedException { get; }
Property Value
Type Description
System.Boolean

true if [in notify current cell changed exception]; otherwise, false.

InSetTextBoxTextCore

Gets a value indicating whether InSetTextBoxTextCore. Internal only.

Declaration
public bool InSetTextBoxTextCore { get; }
Property Value
Type Description
System.Boolean

true if [in set text box text core]; otherwise, false.

InTextBoxChanged

Used internally.

Declaration
protected bool InTextBoxChanged { get; set; }
Property Value
Type Description
System.Boolean

LimitTextLength

Used internally.

Declaration
protected int LimitTextLength { get; set; }
Property Value
Type Description
System.Int32

TextBox

Gets the text box that is shown in-place in the cell when the user starts editing the cell.

Declaration
public TextBoxBase TextBox { get; }
Property Value
Type Description
System.Windows.Forms.TextBoxBase

TextBoxControl

Used internally.

Declaration
protected TextBoxBase TextBoxControl { get; set; }
Property Value
Type Description
System.Windows.Forms.TextBoxBase

TextBoxText

Gets or sets the current text in the TextBox.

Declaration
protected virtual string TextBoxText { get; set; }
Property Value
Type Description
System.String
Remarks

When you change this text, the setter of this property will ensure the cell is not Read-only, raise a CurrentCellChanging change the text and after successful change, raise a CurrentCellChanged event and force a refresh of the cell.

TextBoxTextCore

Gets or sets the TextBoxTextCore. Internal only.

Declaration
public string TextBoxTextCore { get; set; }
Property Value
Type Description
System.String

The text box text core.

WantsAutoSize

Used internally.

Declaration
protected bool WantsAutoSize { get; set; }
Property Value
Type Description
System.Boolean

Methods

CanCopy()

Determines whether current cell can be copied to clipboard.

Declaration
public override bool CanCopy()
Returns
Type Description
System.Boolean

Returns True.
Overrides

CanCut()

Determines whether the current cell can be cut to clipboard.

Declaration
public override bool CanCut()
Returns
Type Description
System.Boolean

True if this operation is allowed.
Overrides

CanPaste()

Determines whether the current cell can be pasted from clipboard.

Declaration
public override bool CanPaste()
Returns
Type Description
System.Boolean

True if it is allowed.
Overrides

ControlGotFocus(Object, EventArgs)

Declaration
protected override sealed void ControlGotFocus(object sender, EventArgs e)
Parameters
Type Name Description
System.Object sender
System.EventArgs e
Overrides

ControlLostFocus(Object, EventArgs)

Declaration
protected override sealed void ControlLostFocus(object sender, EventArgs e)
Parameters
Type Name Description
System.Object sender
System.EventArgs e
Overrides

Copy()

Called when user initiates a clipboard copy and works with a single cell only.

Declaration
public override bool Copy()
Returns
Type Description
System.Boolean

True if the operation is successful.
Overrides

CreateTextBox()

Creates the text box that is shown in-place in the cell when the user starts editing the cell.

Declaration
protected virtual TextBoxBase CreateTextBox()
Returns
Type Description
System.Windows.Forms.TextBoxBase

Returns the new instance of the GridTextBoxControl.

Cut()

Called when user initiates a clipboard cut and works with a single cell only.

Declaration
public override bool Cut()
Returns
Type Description
System.Boolean

True if the operation is successful.
Overrides

Dispose(Boolean)

Disposes the unmanaged resources.

Declaration
protected override void Dispose(bool disposing)
Parameters
Type Name Description
System.Boolean disposing
Overrides

GetEditState()

Returns the state information that lets you restore the current edit state.

Declaration
public override object GetEditState()
Returns
Type Description
System.Object

State information.
Overrides

GetSelectedText(out String)

Gets the selected text in the current cell.

Declaration
public override bool GetSelectedText(out string strResult)
Parameters
Type Name Description
System.String strResult

A string with the selected text.
Returns
Type Description
System.Boolean

True if the operation is successful.
Overrides

ModelUpdateActiveText()

Calls SetActiveText(Int32, Int32, String) on the GridCellModelBase

Declaration
protected void ModelUpdateActiveText()

NotifyCurrentCellChanged()

Raises the GridCurrentCell.CellChanged event indicating the contents of the current cell have been changed (e.g. in response to a TextBox.Changed event).

Declaration
protected override void NotifyCurrentCellChanged()
Overrides

OnClick(Int32, Int32, MouseEventArgs)

Called 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

A System.Windows.Forms.MouseEventArgs with data about the mouse event.
Overrides

OnDoubleClick(Int32, Int32, MouseEventArgs)

Called when the user double-clicks inside a cell.

Declaration
protected override void OnDoubleClick(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

A System.Windows.Forms.MouseEventArgs with data about the mouse event.
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

The GridStyleInfo object holds the style information of a cell.
Overrides

OnHasFocusControlChanged()

Define this method if your cell renderer supports in-place editing and you want to do any custom initialization at this point before cell gets redrawn.

Declaration
protected override void OnHasFocusControlChanged()
Overrides

OnInitialize(Int32, Int32)

Called from Initialize after currentRowIndex, inInitialize are set and PerformLayout finished.

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

Specifies the row id.
System.Int32 colIndex

Specifies the column id.
Overrides

OnKeyDown(KeyEventArgs)

Raises the event when user pressed key down.

Declaration
protected override void OnKeyDown(KeyEventArgs e)
Parameters
Type Name Description
System.Windows.Forms.KeyEventArgs e

An System.Windows.Forms.KeyEventArgs that contains event data.
Overrides

OnKeyPress(KeyPressEventArgs)

Raises the event when user pressed key.

Declaration
protected override void OnKeyPress(KeyPressEventArgs e)
Parameters
Type Name Description
System.Windows.Forms.KeyPressEventArgs e

A System.Windows.Forms.KeyEventArgs with data of the keyboard event.
Overrides

OnSetControlText(String)

Sets the control text.

Declaration
protected override void OnSetControlText(string text)
Parameters
Type Name Description
System.String text
Overrides

Paste()

Called when user initiates a clipboard paste and works only with a single cell.

Declaration
public override bool Paste()
Returns
Type Description
System.Boolean

True if the operation is successful.
Overrides

ReplaceSel(String)

Replaces the selected text in the current cell.

Declaration
public override void ReplaceSel(string replacement)
Parameters
Type Name Description
System.String replacement

String to replace the current selected text.
Overrides

SetEditState(Object)

Restores previously retrieved editing state information from a GetEditState call.

Declaration
public override void SetEditState(object state)
Parameters
Type Name Description
System.Object state

The cell-type specific object with the edit state information.
Overrides

SetModelActiveText(String)

Calls SetActiveText(Int32, Int32, String) and ensures that ActiveTextChanged event is ignored for the current renderer. Only other renderers in other grid views will handle the ActiveTextChanged event.

Declaration
protected void SetModelActiveText(string value)
Parameters
Type Name Description
System.String value

The text to be set.

SetSelectedText(String, Boolean)

Sets the TextBox.SelectedText of the text box and optionally validates the string with a ValidateString(String) call.

Declaration
public bool SetSelectedText(string text, bool validate)
Parameters
Type Name Description
System.String text

The text that should replace the current selected text in the text box.
System.Boolean validate

Indicates if ValidateString(String) should be called.
Returns
Type Description
System.Boolean

True if text was valid and could be copied to the text box.
Remarks

The method raises a CurrentCellChanged event after the text was modified.

Note: This is a low-level method. The method does not raise CurrentCellChanging and also does not check if the current cell is already in editing mode.

SetTextBoxText(String, Boolean)

Sets the TextBox.Text of the text box and optionally validates the string with a ValidateString(String) call.

Declaration
public bool SetTextBoxText(string s, bool validate)
Parameters
Type Name Description
System.String s

The text to be displayed.
System.Boolean validate

Indicates if ValidateString(String) should be called.
Returns
Type Description
System.Boolean

True if text was valid and could be copied to the text box.
Remarks

The method will also raises a cancelable CurrentCellChanging event if the text was not modified.

TextBoxChanged(Object, EventArgs)

Occurs when the System.Windows.Forms.Control.TextChanged event of the TextBox is raised.

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

The source of the event.
System.EventArgs e

An System.EventArgsthat contains event data.

TextBoxGotFocus(Object, EventArgs)

Handles the System.Windows.Forms.Control.GotFocus event of the text box and raises a CurrentCellControlGotFocus event.

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

The source of the event.
System.EventArgs e

An System.EventArgsthat contains event data.

TextBoxLostFocus(Object, EventArgs)

Handles the System.Windows.Forms.Control.LostFocus event of the text box and raise a CurrentCellControlLostFocus event.

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

The source of the event.
System.EventArgs e

An System.EventArgsthat contains event data.

UnwireModel(GridCellModelBase)

Unwires the event.

Declaration
protected override void UnwireModel(GridCellModelBase cellModel)
Parameters
Type Name Description
GridCellModelBase cellModel
Overrides

WireModel(GridCellModelBase)

Wires the ActiveTextChanged event.

Declaration
protected override void WireModel(GridCellModelBase cellModel)
Parameters
Type Name Description
GridCellModelBase cellModel
Overrides

Implements

System.IDisposable