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	Allows you to populate the header filter dropdown with custom items instead of default items.
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.
CustomButtonCallback	Occurs when a user clicks a custom command button.
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 is bound to a 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.
HeaderFilterEditorInitialize	Occurs when a header filter editor is initialized.
HeaderFilterFillItems	Allows you to add custom header filter items to default items.
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.