aspnet-devexpress-dot-web-dot-aspxtreelist-dot-aspxtreelist-dot-underscore-events.md
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. |
See Also