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GanttControl Events

Represents a bar chart that illustrates a project schedule. The control displays project tasks organized in a tree list. The chart displays a bar against each task that shows the task start and finish dates, progress, and dependencies.
Name Description
AfterCheckNode Occurs after a node's check state has been changed by an end-user. Inherited from TreeList.
AfterCollapse Fires immediately after a node has been collapsed. Inherited from TreeList.
AfterDragNode Fires immediately after a drag-and-drop operation on a node has been successfully completed. Inherited from TreeList.
AfterDropNode Fires after a node is dropped. Inherited from TreeList.
AfterExpand Fires immediately after a node has been expanded. Inherited from TreeList.
AfterFocusNode Fires in response to focus being moved between nodes. Inherited from TreeList.
AutoSizeChanged This event is not relevant for this class. Inherited from Control.
BackColorChanged Occurs when the value of the BackColor property changes. Inherited from Control.
BackgroundImageChanged Occurs when the value of the BackgroundImage property changes. Inherited from Control.
BackgroundImageLayoutChanged Occurs when the BackgroundImageLayout property changes. Inherited from Control.
BandWidthChanged Occurs when the band's width is changed. Inherited from TreeList.
BeforeCheckNode Occurs before a node's check state is changed. Inherited from TreeList.
BeforeCollapse Fires before a node is collapsed. Inherited from TreeList.
BeforeDragNode Fires when an attempt to drag a node is performed. Inherited from TreeList.
BeforeDropNode Fires when a node is about to be dropped, and allows you to cancel the operation. Inherited from TreeList.
BeforeExpand Fires before a node is expanded. Allows you to implement dynamic node loading in unbound mode. Inherited from TreeList.
BeforeFocusNode Fires before a node is focused. Inherited from TreeList.
BeforeLoadLayout Occurs before a layout is restored from storage (a stream, xml file or the system registry). Inherited from TreeList.
BindingContextChanged Occurs when the value of the BindingContext property changes. Inherited from Control.
CalcNodeDragImageIndex Enables you to specify a custom image to be displayed in front of nodes when dragging. Inherited from TreeList.
CalcNodeHeight Allows you to assign custom node height. Inherited from TreeList.
CausesValidationChanged Occurs when the value of the CausesValidation property changes. Inherited from Control.
CellValueChanged Fires immediately after a user closes a cell editor with a modified value. Inherited from TreeList.
CellValueChanging Fires when an end-user starts to edit a cell value. Inherited from TreeList.
ChangeUICues Occurs when the focus or keyboard user interface (UI) cues change. Inherited from Control.
Click Occurs when the control is clicked. Inherited from Control.
ClientSizeChanged Occurs when the value of the ClientSize property changes. Inherited from Control.
ClipboardNodeCopying Fires before a data row, a group row, column headers, or band headers are copied to the clipboard. Allows you to apply a format, change copied data, or skip a data row or header. Inherited from TreeList.
ClipboardNodePasting Fires before a node is pasted to the control. Allows you to apply a format, update the pasted data, or skip a data row. Inherited from TreeList.
ColumnButtonClick Fires when the column button is clicked. Inherited from TreeList.
ColumnChanged Fires immediately after the column collection or an individual column has been modified. Inherited from TreeList.
ColumnFilterChanged Occurs when a column's filter condition is changed. Inherited from TreeList.
ColumnPositionChanged Fires when a column is moved, hidden, or shown. Inherited from TreeList.
ColumnUnboundExpressionChanged Fires after a column's TreeListColumn.UnboundExpression property has been changed. Inherited from TreeList.
ColumnWidthChanged Fires after a column's width has been changed. Inherited from TreeList.
CompareNodeValues Enables you to implement custom sorting for columns whose TreeListColumn.SortMode property is set to Custom. For versions 17.1 and higher, the CompareNodeValues event is deprecated and replaced with the TreeList.CustomColumnSort event. Inherited from TreeList.
ContextMenuChanged Occurs when the value of the ContextMenu property changes. Inherited from Control.
ContextMenuStripChanged Occurs when the value of the ContextMenuStrip property changes. Inherited from Control.
ControlAdded Occurs when a new control is added to the Control.ControlCollection. Inherited from Control.
ControlRemoved Occurs when a control is removed from the Control.ControlCollection. Inherited from Control.
CreateCustomNode Provides the ability to create custom nodes. Inherited from TreeList.
CursorChanged Occurs when the value of the Cursor property changes. Inherited from Control.
CustomCalcTaskDependency Fires before the control calculates a dependency line. Allows you to specify the dependency line.
CustomColumnDisplayText Fires for both bound and unbound Tree List columns and allows you to provide a custom display text for any cell. Inherited from TreeList.
CustomColumnSort Allows you to apply custom sorting for those Tree List columns whose TreeListColumn.SortMode is set to Custom. Inherited from TreeList.
CustomDrawBandHeader Provides the capability to custom paint band headers. Inherited from TreeList.
CustomDrawColumnHeader Provides the ability to custom paint column headers and the column button. Inherited from TreeList.
CustomDrawEmptyArea Enables you to custom paint a Tree List's empty area. Inherited from TreeList.
CustomDrawFilterPanel Enables you to custom paint the Filter Panel. Inherited from TreeList.
CustomDrawFooter Gives you the ability to perform custom painting of the summary footer. Inherited from TreeList.
CustomDrawFooterCell Gives you the ability to perform custom painting of column footer cells. Inherited from TreeList.
CustomDrawNodeButton Gives you the ability to perform custom painting of expand buttons. Inherited from TreeList.
CustomDrawNodeCell Provides the ability to perform custom painting of node cells. Inherited from TreeList.
CustomDrawNodeCheckBox Enables you to manually paint node check boxes. Inherited from TreeList.
CustomDrawNodeImages Provides access to a GDI+/DirectX drawing surface and allows you to draw node icons manually. Inherited from TreeList.
CustomDrawNodeIndent Enables tree indents to be painted manually. Inherited from TreeList.
CustomDrawNodeIndicator Provides the ability to perform custom painting of indicator cells. Inherited from TreeList.
CustomDrawNodePreview Allows you to custom paint preview sections. Inherited from TreeList.
CustomDrawRow Provides the ability to perform custom painting of rows. Inherited from TreeList.
CustomDrawRowFooter Provides the ability to perform custom painting of row footers. Inherited from TreeList.
CustomDrawRowFooterCell Provides the ability to perform custom painting of row footer cells. Inherited from TreeList.
CustomDrawScroll Allows you to draw custom scrollbars, or highlight specific positions on the scrollbars. Inherited from TreeList.
CustomDrawTask Fires before a task in the chart area is displayed. Provides access to a drawing surface and allows you to draw the task manually.
CustomDrawTaskDependency Fires before a task dependency line in the chart area is displayed. Provides access to a drawing surface and allows you to draw the task manually.
CustomDrawTimescaleColumn Fires before a column in the chart area is displayed. Provides access to a drawing surface and allows you to draw the column manually.
CustomFilterDisplayText Allows the text displayed within the Filter Panel to be customized. Inherited from TreeList.
CustomizeNewNodeFromOuterData Fires when a node from another TreeList control is dropped onto the current TreeList control and thus, a new node in the current TreeList is about to be created. The event allows you to provide data for the new node that is to be created. Inherited from TreeList.
CustomNodeCellEdit Enables editors to be assigned to cells on an individual basis. Inherited from TreeList.
CustomNodeCellEditForEditing Allows you to assign a custom editor to a column for in-place editing and override the default column editor, which is by default used both in display and edit modes. Inherited from TreeList.
CustomRowFilter Allows you to specify the node visibility, regardless of the currently applied filter. Inherited from TreeList.
CustomScrollAnnotation Allows you to specify custom annotations. Inherited from TreeList.
CustomTaskDisplayText Allows you to specify the text displayed inside, to the left, and to the right of the task.
CustomTaskProgress Fires when a task's progress is recalculated and allows you to specify a custom value.
CustomTaskScheduling Fires during the automatic rescheduling process when the control calculates new start and finish dates for a task. Allows you to cancel rescheduling the current task and stop the rescheduling process for its successors.
CustomUnboundColumnData Allows you to provide data to unbound columns, and save their modified records to an external source. Inherited from TreeList.
DataSourceChanged Occurs whenever the TreeList changes its data source. Inherited from TreeList.
DefaultPaintHelperChanged Fires when a different paint helper is assigned to the TreeList control. Inherited from TreeList.
Disposed Occurs when the component is disposed by a call to the Dispose() method. Inherited from Component.
DockChanged Occurs when the value of the Dock property changes. Inherited from Control.
DoubleClick Occurs when the control is double-clicked. Inherited from Control.
DpiChangedAfterParent Occurs when the DPI setting for a control is changed programmatically after the DPI of its parent control or form has changed. Inherited from Control.
DpiChangedBeforeParent Occurs when the DPI setting for a control is changed programmatically before a DPI change event for its parent control or form has occurred. Inherited from Control.
DragCancelNode Fires immediately after a drag-and-drop operation over a node has been canceled. Inherited from TreeList.
DragDrop Occurs when a drag-and-drop operation is completed. Inherited from Control.
DragEnter Occurs when an object is dragged into the control's bounds. Inherited from Control.
DragLeave Occurs when an object is dragged out of the control's bounds. Inherited from Control.
DragObjectDrop Fires immediately after the drag and drop operation has been completed. Inherited from TreeList.
DragObjectOver Enables you to control whether the dragged column header can be dropped at the current position. Inherited from TreeList.
DragObjectStart Fires when an end-user attempts to drag a column header. Inherited from TreeList.
DragOver Occurs when an object is dragged over the control's bounds. Inherited from Control.
EditFormHidden Fires after the Edit Form is closed. Inherited from TreeList.
EditFormPrepared Fires when the Edit Form is about to be displayed. Allows you to customize the Edit Form. Inherited from TreeList.
EditFormShowing Fires when the Edit Form is about to be displayed. Allows you to cancel the action. Inherited from TreeList.
EditorKeyDown Occurs when a key is pressed within an in-place editor that belongs to the container control. Inherited from EditorContainer.
EditorKeyPress Occurs when a character key is pressed within an in-place editor that belongs to the container control. Inherited from EditorContainer.
EditorKeyUp Occurs when a pressed key is released within an in-place editor that belongs to the container control. Inherited from EditorContainer.
EnabledChanged Occurs when the Enabled property value has changed. Inherited from Control.
EndSorting Fires after a sorting operation has finished. Inherited from TreeList.
Enter Occurs when the control is entered. Inherited from Control.
FilterEditorCreated Allows you to customize the Filter Editor before it is displayed on screen. Inherited from TreeList.
FilterNode This event is obsolete. Use the TreeList.CustomRowFilter event instead. Inherited from TreeList.
FilterPopupExcelCustomizeTemplate Allows you to customize templates used by Excel-style Filter Dropdowns and external editors generated using Filtering UI Context. Inherited from TreeList.
FilterPopupExcelData Allows you to add, remove, and modify data values and customize predefined filters in the Excel style pop-up filter menus. Filter items added manually on this event must be unique and sorted. Inherited from TreeList.
FilterPopupExcelParseFilterCriteria Allows you to parse the filter criteria applied to data and select the corresponding values in the filter menu. Inherited from TreeList.
FilterPopupExcelPrepareTemplate Allows you to replace templates used by Excel-style Filter Dropdowns and external editors generated using Filtering UI Context. Inherited from TreeList.
FilterPopupExcelQueryFilterCriteria Fires when a filter criteria is about to be applied to data and allows you to customize the filter criteria. Inherited from TreeList.
FocusedColumnChanged Fires immediately after focus has been moved from a column. Inherited from TreeList.
FocusedNodeChanged Fires immediately after changing the focused node. Inherited from TreeList.
FontChanged Occurs when the Font property value changes. Inherited from Control.
ForeColorChanged Occurs when the ForeColor property value changes. Inherited from Control.
FormatRuleExpressionEditorCreated Allows you to customize the Expression Editor embedded in the Edit Formatting Rule dialog. Inherited from TreeList.
GetCustomNodeCellEdit Obsolete. Provides the ability to assign editors to individual cells. Inherited from TreeList.
GetCustomNodeCellStyle Obsolete. Provides the ability to assign custom style to individual cells. Inherited from TreeList.
GetCustomSummaryValue Allows you to specify custom summary values when the control is displayed on-screen. Inherited from TreeList.
GetNodeDisplayValue Allows you to display custom values within cells. This event is obsolete. Use the TreeList.CustomColumnDisplayText event instead. Inherited from TreeList.
GetPreviewText Enables you to supply custom text for nodes' preview sections. Inherited from TreeList.
GetPrintCustomSummaryValue Allows you to specify custom summary values when the control is printed. Inherited from TreeList.
GetPrintPreviewText Enables you to display custom text in preview sections when the control is printed. Inherited from TreeList.
GetSelectImage Allows you to assign select images to nodes. Inherited from TreeList.
GetStateImage Allows you to assign state images to nodes. Inherited from TreeList.
GiveFeedback Occurs during a drag operation. Inherited from Control.
GotFocus Occurs when the control receives focus. Inherited from Control.
HandleCreated Occurs when a handle is created for the control. Inherited from Control.
HandleDestroyed Occurs when the control's handle is in the process of being destroyed. Inherited from Control.
HelpRequested Occurs when the user requests help for a control. Inherited from Control.
HiddenEditor Fires immediately after a cell editor has been closed. Inherited from TreeList.
HideCustomizationForm Fires immediately after the Customization Form has been closed. Inherited from TreeList.
ImeModeChanged Occurs when the ImeMode property has changed. Inherited from Control.
InitNewRow Fires when a new node is about to be created in the New Item Row and allows you to initialize column values. Inherited from TreeList.
Invalidated Occurs when a control's display requires redrawing. Inherited from Control.
InvalidNodeException Fires when a node fails validation or when its data cannot be saved to the data source. Inherited from TreeList.
InvalidValueException Enables you to handle exceptions raised as a result of assigning invalid values to cells. Inherited from TreeList.
KeyDown Occurs when a key is pressed while the control has focus. Inherited from Control.
KeyPress Occurs when a character. space or backspace key is pressed while the control has focus. Inherited from Control.
KeyUp Occurs when a key is released while the control has focus. Inherited from Control.
Layout Occurs when a control should reposition its child controls. Inherited from Control.
LayoutUpdated Fires after a Tree List's layout has been changed. Inherited from TreeList.
LayoutUpgrade Occurs after a layout the version of which doesn't match the current layout version used has been loaded from storage (a stream, xml file or system registry). Inherited from TreeList.
Leave Occurs when the input focus leaves the control. Inherited from Control.
LeftCoordChanged Fires when the control's content is scrolled horizontally. Inherited from TreeList.
Load Occurs when a TreeList control is displayed for the first time. Inherited from TreeList.
LocationChanged Occurs when the Location property value has changed. Inherited from Control.
LostFocus Occurs when the control loses focus. Inherited from Control.
MarginChanged Occurs when the control's margin changes. Inherited from Control.
MeasurePreviewHeight Allows you to specify the height of individual preview sections in pixels. Inherited from TreeList.
MouseCaptureChanged Occurs when the control loses mouse capture. Inherited from Control.
MouseClick Occurs when the control is clicked by the mouse. Inherited from Control.
MouseDoubleClick Occurs when the control is double clicked by the mouse. Inherited from Control.
MouseDown Occurs when the mouse pointer is over the control and a mouse button is pressed. Inherited from Control.
MouseEnter Occurs when the mouse pointer enters the control. Inherited from Control.
MouseHover Occurs when the mouse pointer rests on the control. Inherited from Control.
MouseLeave Occurs when the mouse pointer leaves the control. Inherited from Control.
MouseMove Occurs when the mouse pointer is moved over the control. Inherited from Control.
MouseUp Occurs when the mouse pointer is over the control and a mouse button is released. Inherited from Control.
MouseWheel Occurs when the mouse wheel moves while the control has focus. Inherited from Control.
Move Occurs when the control is moved. Inherited from Control.
NodeCellStyle Allows you to customize the appearance of individual cells. Inherited from TreeList.
NodeChanged Fires after the node's property has changed. Inherited from TreeList.
NodesReloaded Fires when the Tree List control reloads all nodes. Inherited from TreeList.
PaddingChanged Occurs when the control's padding changes. Inherited from Control.
Paint Occurs when the control is redrawn. Inherited from Control.
PaintEx A DirectX-compatible event that replaces the standard Control.Paint event. Inherited from TreeList.
ParentChanged Occurs when the Parent property value changes. Inherited from Control.
ParseFindPanelText Fires after the query in the find panel changes. Allows you to create a filter condition based on the query and specify how to highlight results in the control. Inherited from TreeList.
PreviewKeyDown Occurs before the KeyDown event when a key is pressed while focus is on this control. Inherited from Control.
PrintExportProgress Fires repeatedly while the TreeList's data is being printed/exported. Inherited from TreeList.
QueryAccessibilityHelp Occurs when AccessibleObject is providing help to accessibility applications. Inherited from Control.
QueryContinueDrag Occurs during a drag-and-drop operation and enables the drag source to determine whether the drag-and-drop operation should be canceled. Inherited from Control.
QueryCustomFunctions Allows you to add custom-function-based filters (for example, 'discount is more than 15%') to Excel-style pop-up filter menus and/or the filter editor. Inherited from TreeList.
RegionChanged Occurs when the value of the Region property changes. Inherited from Control.
RequestTimescaleRulers Fires when the chart is zoomed in / zoomed out. Allows you to customize the timescale rulers.
Resize Occurs when the control is resized. Inherited from Control.
RightToLeftChanged Occurs when the RightToLeft property value changes. Inherited from Control.
RowCellClick Fires when a cell is clicked. Inherited from TreeList.
RowClick Fires when a row (node) is clicked. Inherited from TreeList.
RowSelectImageClick Fires when a row's select image is clicked. Inherited from TreeList.
RowStateImageClick Fires when a row's state image is clicked. Inherited from TreeList.
ScrollAnnotationsStyle Allows you to customize the scrollbar annotation color and alignment. Inherited from TreeList.
SelectImageClick Fires when the user clicks a node's select image. This event is obsolete. Use RowSelectImageClick instead. Inherited from TreeList.
SelectionChanged Fires in response to changing selection when the TreeList is in multiselect mode. Inherited from TreeList.
ShowCustomizationForm Fires immediately after the Customization Form has been displayed. Inherited from TreeList.
ShowFilterPopupCheckedListBox Fires before a pop-up filter menu is displayed. Allows you to customize the value checklist. Inherited from TreeList.
ShowFilterPopupDate Allows you to customize a column's dropdown calendar before it is displayed. Inherited from TreeList.
ShowFilterPopupExcel Allows you to hide specific filtering conditions from the "Filters" tab of the Excel-style Filter Dropdown. Inherited from TreeList.
ShowFilterPopupListBox Fires before a pop-up filter menu is displayed. Allows you to customize the value list. Inherited from TreeList.
ShowingEditor Fires before the TreeList is switched to edit mode. Inherited from TreeList.
ShownEditor Fires immediately after a cell editor has been invoked. Inherited from TreeList.
ShowTreeListMenu Obsolete. Allows you to customize the default menus for column headers, row and footer summaries, nodes, and the empty area. Inherited from TreeList.
SizeChanged Occurs when the Size property value changes. Inherited from Control.
SplitterPositionChanged Fires after the splitter changes its position.
SplitterPositionChanging Fires before the splitter changes its position. Allows you to cancel the action.
StartSorting Fires before a sorting operation is started. Inherited from TreeList.
StateChanged Fires after the Tree List's state has changed. Inherited from TreeList.
StateImageClick Fires when the user clicks a node's state image. This event is obsolete. Use RowStateImageClick instead. Inherited from TreeList.
StyleChanged Occurs when the control style changes. Inherited from Control.
SubstituteFilter Allows you to replace the applied filter with another filter. Inherited from TreeList.
SystemColorsChanged Occurs when the system colors change. Inherited from Control.
TabIndexChanged Occurs when the TabIndex property value changes. Inherited from Control.
TabStopChanged Occurs when the TabStop property value changes. Inherited from Control.
TaskDependencyModification Repeatedly fires when a user modifies a task's dependency. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskDependencyModificationCanceled Fires when a user presses Esc to cancel modifying a task's dependency. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskDependencyModificationCompleted Fires when a user finishes modifying a dependency. Allows you to cancel the operation.
TaskDependencyModified Fires when a task's dependency is successfully modified. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskFinishDateModification Repeatedly fires when a user modifies a task's finish date. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskFinishDateModificationCanceled Fires when a user presses Esc to cancel modifying a task's finish date. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskFinishDateModificationCompleted Fires when a user finishes modifying a finish date. Allows you to cancel the operation.
TaskFinishDateModificationStarted Fires when a user starts to modify a task's finish date. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskFinishDateModified Fires when a task's finish date is successfully modified. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskMoveCanceled Fires when a user presses Esc to cancel moving a task. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskMoveCompleted Fires when a user finishes moving a task. Allows you to cancel the operation.
TaskMoved Fires when a task is successfully moved. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskMoveStarted Fires when a user starts to move a task. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskMoving Repeatedly fires when a user moves a task. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskPopupMenuShowing Fires when a context menu for a task is about to be shown.
TaskProgressModification Repeatedly fires when a user modifies a task's progress. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskProgressModificationCanceled Fires when a user presses Esc to cancel modifying a task's progress. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskProgressModificationCompleted Fires when a user finishes modifying progress. Allows you to cancel the operation.
TaskProgressModificationStarted Fires when a user starts to modify a task's progress. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskProgressModified Fires when a task's progress is successfully modified. This event only fires when a user modifies a task in the chart. When the user modifies a task in the task list, the event does not fire.
TaskToolTipShowing Fires when a tooltip for a task is about to be shown.
TextChanged Occurs when the Text property value changes. Inherited from Control.
TopVisibleNodeIndexChanged Fires when the control's content is scrolled vertically. Inherited from TreeList.
TreeListMenuItemClick Provides the ability to perform custom handling of a context menu item click. Inherited from TreeList.
TreeListPopupMenuShowing Allows you to customize the default menus for column headers, summary footers, and nodes.
UnboundExpressionEditorCreated Fires after an Expression Editor has been created for an unbound column. Inherited from TreeList.
Validated Occurs when the control is finished validating. Inherited from Control.
ValidateNode Gives you the ability to specify whether a modified node's data is valid, and if this node can lose focus. Inherited from TreeList.
Validating Occurs when the control is validating. Inherited from Control.
ValidatingEditor Fires when an editor is validated. Inherited from TreeList.
VirtualTreeGetCellValue This event allows you to initialize cells (and optionally the check state) of the processed node, when populating the Tree List control with data dynamically. Inherited from TreeList.
VirtualTreeGetChildNodes This event allows you to provide root and child nodes, when populating the Tree List control with data dynamically. Inherited from TreeList.
VirtualTreeSetCellValue Allows changes that are made to node cells and check state to be stored. Inherited from TreeList.
VisibleChanged Occurs when the Visible property value changes. Inherited from Control.
See Also