ASPxTreeList Events

Represents a server ASPxTreeList control.

Name Description
AutoFilterCellEditorCreate

Enables you to assign editors to individual filter row cells.

AutoFilterCellEditorInitialize

Enables the cell editors displayed within the auto filter row cells to be initialized.

BatchUpdate

Occurs after an end-user clicks the Update button in batch edit mode and allows you to provide a custom data updating mechanism.

BeforeExport

Occurs before the tree list content is exported.

BeforeGetCallbackResult

Occurs after a callback sent by the current control has been processed on the server, but prior to the time the respective callback result render is formed.

BeforeHeaderFilterFillItems

Enables you to provide custom filter items instead of default ones displayed within a Header Filter.

CallbackError static

Allows you to handle any server exception that might occur during server-side processing of a callback sent by a DevExpress web control.

(Inherited from ASPxWebControl)
CancelNodeEditing

Enables you to prevent changes made within a node from being discarded.

CellEditorInitialize

Enables initializing the cell editors displayed within the edit cells.

ClientLayout

Enables you to save and restore the previously saved layout of the ASPxTreeList.

CommandColumnButtonInitialize

Enables individual command buttons to be initialized.

CustomCallback

Fires when a round trip to the server has been initiated by a call to the client ASPxClientTreeList.PerformCallback method.

CustomColumnDisplayText

Enables custom display text to be provided for any cell.

CustomDataCallback

Fires when a round trip to the server has been initiated by a call to the client ASPxClientTreeList.PerformCustomDataCallback method.

CustomErrorText

Enables you to provide custom error descriptions for exceptions raised during a callback.

CustomFilterExpressionDisplayText

Enables you to display custom text in the filter bar, corresponding to the current filter expression.

CustomFilterNode

Enables you to specify whether the required node should be filtered even if this node doesn't match the specified filter criteria.

CustomJSProperties

Enables you to supply any server data that can then be parsed on the client.

CustomNodeSort

Enables you to sort data using custom rules.

CustomSummaryCalculate

Enables you to calculate summary values manually.

CustomUnboundColumnData

Enables data to be supplied to unbound columns.

DataBinding Occurs when the server control binds to a data source.
(Inherited from Control)
DataBound

Occurs after the server control binds to the data source.

(Inherited from ASPxDataWebControlBase)
Disposed Occurs when a server control is released from memory, which is the last stage of the server control lifecycle when an ASP.NET page is requested.
(Inherited from Control)
EditingOperationCompleted

Occurs after data editing has been completed.

ExportRenderBrick

Enables rendering of different content from the content exported by default.

FilterControlColumnsCreated

Occurs after all filter control columns have been created.

FilterControlCriteriaValueEditorCreate

Enables you to replace the default criteria value editor with a custom one.

FilterControlCriteriaValueEditorInitialize

Enables you to initialize the editors displayed within the criteria value.

FilterControlCustomValueDisplayText

Enables you to specify the entered filter value's custom display text to be displayed when the filter control's condition value editor is inactive.

FilterControlOperationVisibility

Enables you to dynamically hide operation items (such as the Equals, Contains, etc.) of the filter control's operation dropdown menu.

FilterControlParseValue

Enables you to process and modify an entered value before it is actually accepted by the filter control.

FocusedNodeChanged

Fires after the focused node has been changed.

HeaderFilterFillItems

Enables you to add custom filter items which filter data by the current column, to ones displayed within a Header Filter.

HtmlCommandCellPrepared

Enables the settings of individual command cells to be changed.

HtmlDataCellPrepared

Enables the settings of individual cells to be changed.

HtmlRowPrepared

Enables the settings of individual rows to be changed.

Init Occurs when the server control is initialized, which is the first step in its lifecycle.
(Inherited from Control)
InitNewNode

Enables you to initialize added nodes.

Load Occurs when the server control is loaded into the Page object.
(Inherited from Control)
NodeCollapsed

Fires after a node has been collapsed.

NodeCollapsing

Fires before a node is collapsed.

NodeDeleted

Occurs after a node has been deleted.

NodeDeleting

Enables you to prevent a node from being deleted.

NodeExpanded

Fires after a node has been expanded.

NodeExpanding

Fires before a node is expanded.

NodeInserted

Occurs after a new node has been added to the ASPxTreeList.

NodeInserting

Enables you to cancel adding a new node.

NodeUpdated

Occurs after a node has been updated.

NodeUpdating

Enables you to prevent a node from being updated.

NodeValidating

Enables you to specify whether node data is valid, and whether the node can be updated.

PageIndexChanged

Fires after the selected page has been changed.

PageSizeChanged

Fires on the server side after a page size (amount of rows per a page) is changed by end-user interactions.

ParseValue

Enables you to process and modify an entered value before it is actually accepted by the ASPxTreeList.

PreRender Occurs after the Control object is loaded but prior to rendering.
(Inherited from Control)
ProcessColumnAutoFilter

Enables you to apply custom filter criteria when filter row is in the Auto mode.

ProcessDragNode

Fires after a node drag and drop operation has been completed.

ProcessOnClickRowFilter

Enables you to apply custom filter criteria when the filter row is in the OnClick mode.

SearchPanelEditorCreate

Enables you to replace the default search panel editor with custom one.

SearchPanelEditorInitialize

Enables you to customize the properties of an editor displayed within the search panel.

SelectionChanged

Fires after an end user changed selection.

StartNodeEditing

Enables you to prevent a node from being edited.

ToolbarItemClick

Fires after a toolbar item has been clicked.

Unload Occurs when the server control is unloaded from memory.
(Inherited from Control)
VirtualModeCreateChildren

Enables creation of a list of business objects that correspond to the child nodes owned by the processed node (virtual mode).

VirtualModeNodeCreated

Occurs when the ASPxTreeList functions in Virtual Mode after a node has been created.

VirtualModeNodeCreating

Enables you to initialize nodes in a tree virtual mode.

See Also