- FarPoint.CalcEngine Assembly
- FarPoint.Excel Assembly
- FarPoint.PDF Assembly
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FarPoint.Win Assembly
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FarPoint.Win
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Classes
- AboutDialog
- ApplyBorderEventArgs
- BevelBorder
- BevelBorderFactory
- BorderEditorUI
- ButtonElement
- CanvasBase
- CanvasContainerBase
- CaptionsArrayList
- CheckBoxPicture
- ClipboardChangeNotifier
- ColorPicker
- ComplexBorder
- ComplexBorderFactory
- ComplexBorderSide
- ComplexBorderSideFactory
- ComplexBorderSidePattern
- CompoundBorder
- CompoundBorderFactory
- ControlBase
- CustomTypes
- DoubleLineBorder
- DoubleLineBorderFactory
- DropDownButtonElement
- DropDownEventArgs
- ElementContainerControl
- ElementControl
- ElementStyle
- ElementWindowless
- ElementWithButtons
- Elements
- Elements.ElementAddNotifyEventArgs
- Elements.ElementDeletingNotifyEventArgs
- Elements.ElementEnumerator
- EmptyBorder
- FontSelector
- FpButton
- FpCheckBox
- FpCombo
- FpHyperlink
- FpMultiOption
- FpProgress
- FpSlider
- FpVisualStyleRenderer
- InputTextBox
- Inset
- LicenseDialog
- LicenseDialogGC
- LineBorder
- LineBorderFactory
- LocalizedTextEventArgs
- Localizer
- NameChangingEventArgs
- NoFocusChangeException
- Picture
- PopUpEventArgs
- PopupCancelEventArgs
- PopupClosedEventArgs
- PopupWindowHelper
- PopupWindowHelperMessageFilter
- RadioPicture
- RoundedLineBorder
- RoundedLineBorderFactory
- SEditButton
- SEditButtonElement
- Serializer
- SlideLeftEventArgs
- SlideRightEventArgs
- SpinDownButtonElement
- SpinDownEventArgs
- SpinUpButtonElement
- SpinUpEventArgs
- StringSearch
-
SuperEditBase
- Constructors
- Fields
- Properties
-
Methods
- Clear
- ClearAll
- Copy
- CreateStringWithLiterals
- Cut
- GetCharIndexAtPoint
- GetDrawingFont
- GetDrawingStringFormat
- GetDrawingText
- GetLeftmostCharacters
- GetNewFormat
- GetPaintString
- GetRightmostCharacters
- HideSelectionGripper
- IsDefaultBorder
- IsMouseOverButton
- IsNull
- IsSizeAllowed
- IsValid
- OnAdvance
- OnCausesValidationChanged
- OnClick
- OnDoubleClick
- OnDropDown
- OnEditClick
- OnEditDoubleClick
- OnEditEnter
- OnEditGotFocus
- OnEditHelpRequested
- OnEditKeyDown
- OnEditKeyPress
- OnEditKeyUp
- OnEditLeave
- OnEditLostFocus
- OnEditMouseDown
- OnEditMouseEnter
- OnEditMouseLeave
- OnEditMouseMove
- OnEditMouseUp
- OnEditMouseWheel
- OnEditPreviewKeyDown
- OnEditTextChanged
- OnEditTextCut
- OnEditTextPasted
- OnEditTextPasting
- OnEditValidated
- OnEditValidating
- OnEditorVisibleChanged
- OnGotFocus
- OnImeModeChanged
- OnInvalidData
- OnLayout
- OnLocationChanged
- OnMouseDown
- OnMouseEnter
- OnMouseLeave
- OnMouseMove
- OnMouseUp
- OnPaint
- OnParentChanged
- OnParentFontChanged
- OnResize
- OnSizeChanged
- OnUserError
- PaintBackColor
- PaintBackgroundImage
- PaintFocusRectangle
- PaintSpecialBackground
- PaintString
- PaintTextAndPicture
- Paste
- Reset
- ResetBackColor
- ResetBorder
- ResetButtonColor
- ResetButtonMarginColor
- ResetFont
- ResetForeColor
- ResetInvalidColor
- ResetNullColor
- ResetText
- ResetToInitText
- Select
- SelectAll
- SetNewFormat
- SetNull
- SetToolTip
- ShouldSerializeCursor
- ShowSelectionGripper
- ToggleState
- Undo
- Events
- SuperEditPreview
- TabManager
- TabManagerChangeEventArgs
- TabStrip
- TabStripNavigateEventArgs
- TabStripSelectEventArgs
- UnlockDialog
- VisualStyle
- VisualStyleTheme
- Structs
- Enums
- Interfaces
- Delegates
-
Classes
- FarPoint.Win.SuperEdit
- FarPoint.Win.Text
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FarPoint.Win
- FarPoint.Win.Chart Assembly
- FarPoint.Win.Spread Assembly
- GrapeCity.CalcEngine Assembly
- GrapeCity.Spreadsheet Assembly
- GrapeCity.Spreadsheet.WinForms.Ribbon Assembly
- GrapeCity.Win.PluginInputMan Assembly
FarPoint.Win.SuperEditBase.IsNull
IsNull Method
IsNull()
Gets whether the control contains a null value.
Declaration
public virtual bool IsNull()Public Overridable Function IsNull() As BooleanReturns
| Type | Description |
|---|---|
| bool | Whether the control contains a null value. |