blazor-devexpress-dot-blazor-dot-dxtreelist-dot-underscore-members.md
A component that displays hierarchical data in a tabular format and allows users to edit, sort, filter, and otherwise shape data.
| Name | Description |
|---|---|
| DxTreeList() | Initializes a new instance of the DxTreeList class. |
| Name | Description |
|---|---|
| AllowColumnReorder | Specifies whether users can reorder columns. |
| AllowDragRows | Specifies whether users can start the row drag operation. |
| AllowedDropTarget | Specifies allowed drag-and-drop targets. |
| AllowSelectRowByClick | Specifies whether users can select and deselect rows by mouse clicks, tap gestures, and keyboard shortcuts. |
| AllowSort | Specifies whether users can sort treelist data. |
| Attributes | Specifies a collection of standard HTML attributes applied to the TreeList. |
| AutoExpandAllNodes | Specifies whether to automatically expand all nodes when the TreeList loads data. |
| ChildrenFieldName | Specifies the field name that stores the node’s child data items. |
| ColumnCaptionAlignment | Specifies the alignment of all column captions. |
| ColumnFooterTemplate | Specifies a common template used to display all footer cells in the TreeList. |
| ColumnHeaderCaptionTemplate | Specifies a common template used to display captions of all column headers in the TreeList. |
| ColumnResizeMode | Specifies whether and how users can resize TreeList columns. |
| Columns | Allows you to add TreeList columns. |
| ContextMenus | Specifies available context menus. |
| CssClass | Assigns a CSS class to the TreeList. |
| CustomValidators | Allows you to declare custom validator components. |
| Data | Specifies a data source. |
| DataColumnCellDisplayTemplate | Specifies a common template used to display all data column cells in the TreeList. |
| DataColumnCellEditTemplate | Allows you to replace automatically generated editors with custom content in all edit cells displayed for data columns. |
| DataColumnFilterMenuTemplate | Specifies a common template used to display all column filter menus. |
| DataColumnFilterRowCellTemplate | Allows you to replace automatically generated editors with custom content in all filter row cells displayed for data columns. |
| DragHintTextTemplate | Specifies the template for the drag hint. |
| DropTargetMode | Specifies the drop position behavior. Applicable only to drag and drop operations initiated externally. |
| EditFormButtonsVisible | Specifies whether the edit form contains predefined Save and Cancel buttons. |
| EditFormTemplate | Specifies the template used to display the edit form. |
| EditMode | Specifies how users can edit TreeList data. |
| EditNewRootRowPosition | Specifies the position of UI elements used to create new root nodes. |
| EditOnKeyPress | In EditCell mode, specifies whether cell editing starts once a user begins typing a new value. |
| EmptyDataAreaTemplate | Specifies the template used to display an empty data area. |
| EnterKeyDirection | In EditCell mode, specifies where focus moves after a user presses Enter. |
| FilterBuilderTemplate | Specifies the template for the filter builder. |
| FilterMenuButtonDisplayMode | Specifies when the TreeList displays filter menu buttons in column headers. |
| FilterPanelDisplayMode | Specifies the filter panel visibility. |
| FilterTreeMode | Specifies how the TreeList component displays filtered nodes. |
| FocusedRowEnabled | Specifies whether row focus is enabled. |
| FooterDisplayMode | Specifies when to display the footer in the TreeList. |
| HasChildrenFieldName | Specifies the field name that defines whether a node has children. |
| HighlightRowOnHover | Specifies whether to highlight a data row when a user hovers the mouse pointer over it. |
| KeyFieldName | Specifies the field name that contains unique identifiers for TreeList nodes. |
| PageIndex | Specifies the active page index. |
| PagerAutoHideNavButtons | Specifies whether arrow navigation buttons are hidden when all numeric buttons are displayed in the pager. |
| PagerNavigationMode | Specifies how users navigate between TreeList pages. |
| PagerPosition | Specifies the pager position. |
| PagerSwitchToInputBoxButtonCount | Specifies the total number of pages when the pager switches from numeric buttons to the input box in Auto mode. |
| PagerVisible | Specifies whether the TreeList displays the pager. |
| PagerVisibleNumericButtonCount | Specifies the maximum number of numeric buttons displayed in the pager. |
| PageSize | Specifies the maximum number of rows displayed on a page. |
| PageSizeSelectorAllRowsItemVisible | Specifies whether the page size selector contains the All item. |
| PageSizeSelectorItems | Specifies items available in the page size selector. |
| PageSizeSelectorVisible | Specifies whether the TreeList displays the page size selector in the pager. |
| ParentKeyFieldName | Specifies the field that links a node to its parent. |
| PopupEditFormCssClass | Assigns a CSS class to the pop-up edit form. |
| PopupEditFormHeaderText | Specifies text displayed in the pop-up edit form’s header. |
| RootValue | Specifies the value that root nodes contain in the field assigned to the ParentKeyFieldName property. |
| SearchBoxInputDelay | Specifies the delay between the last typed character in the search box and the search update. |
| SearchBoxNullText | Specifies the prompt text displayed in the search box when it is empty. |
| SearchBoxTemplate | Specifies a template for the search box. |
| SearchText | Specifies the text that the TreeList uses to filter and highlight data. |
| SearchTextParseMode | Specify how the TreeList searches for a match if the query contains multiple words. |
| SelectAllCheckboxMode | Specifies whether the Select All checkbox selects all rows on the current page or on all TreeList pages. |
| SelectedDataItem | In single selection mode, this property specifies the data item that corresponds to the selected TreeList row. |
| SelectedDataItems | In multiple selection mode, this property specifies data items that correspond to selected TreeList rows. |
| SelectionMode | Specifies the selection mode. |
| ShowAllRows | Specifies whether the TreeList displays all rows on one page. To avoid performance issues when the TreeList is bound to a large data source, use the VirtualScrollingEnabled property instead. |
| ShowFilterRow | Specifies whether the TreeList displays the filter row. |
| ShowSearchBox | Specifies whether the TreeList displays the search box. |
| SizeMode | Specifies the size of TreeList elements (for instance, text size and row height) and other built-in components (for instance, pager and buttons). |
| SkeletonRowsEnabled | Specifies whether the TreeList displays skeletons while it loads data. |
| TextWrapEnabled | Specifies whether the TreeList wraps words or if it trims extra words and displays an ellipsis. |
| ToolbarTemplate | Specifies a template for a toolbar area. |
| TotalSummary | Contains total summary items. |
| ValidationEnabled | Specifies whether the TreeList validates user input. |
| VirtualScrollingEnabled | Specifies whether virtual scrolling is enabled. |
| VirtualScrollingMode | When VirtualScrollingEnabled is set to true, specifies whether the TreeList virtualizes rows, columns, or both. |
| Name | Description |
|---|---|
| AutoFitColumnWidths() | Adjusts column width to content. |
| BeginUpdate() | Suspends TreeList updates caused by parameter changes and method calls until the EndUpdate() method is called. |
| CancelEditAsync() | Cancels row editing and discards changes. |
| ClearFilter() | Clears the filter applied to TreeList data. |
| ClearSelection() | Clears selection. |
| ClearSort() | Clears sorting. |
| CollapseAll() | Collapses all rows in the TreeList component. |
| CollapseRow(Int32) | Collapses the row with the specified visible index. |
| DeselectAllAsync() | Deselects all rows in the TreeList. |
| DeselectAllOnPage() | Deselects all rows on the currently visible page except for child rows of collapsed items. |
| DeselectDataItem(Object) | Deselects a row that corresponds to the specified data item. |
| DeselectDataItems(IEnumerable<Object>) | Deselects rows that correspond to the specified data items. |
| DeselectRow(Int32) | Deselects a row with the specified visible index. |
| DeselectRows(IEnumerable<Int32>) | Deselects rows with the specified visible indexes. |
| EndUpdate() | Resumes TreeList updates (when the BeginUpdate() method pauses updates) and re-renders the TreeList. |
| Equals(Object, Object) static | Determines whether the specified object instances are considered equal. Inherited from Object. |
| Equals(Object) | Determines whether the specified object is equal to the current object. Inherited from Object. |
| ExpandAll() | Expands all rows in the TreeList component. |
| ExpandRow(Int32) | Expands the row with the specified visible index. |
| ExportToCsvAsync(Stream, TreeListCsvExportOptions) | Exports TreeList data to a stream in CSV format. |
| ExportToCsvAsync(String, TreeListCsvExportOptions) | Exports TreeList data in CSV format and downloads the resulting file to the client machine. |
| ExportToPdfAsync(Stream, TreeListPdfExportOptions) | Exports TreeList data in PDF format to a stream. |
| ExportToPdfAsync(String, TreeListPdfExportOptions) | Exports TreeList data to PDF and downloads the output file to the client machine. |
| ExportToXlsAsync(Stream, TreeListXlExportOptions) | Exports TreeList data in XLS format to a stream. |
| ExportToXlsAsync(String, TreeListXlExportOptions) | Exports TreeList data in XLS format and downloads the resulting file to the client machine. |
| ExportToXlsxAsync(Stream, TreeListXlExportOptions) | Exports TreeList data in XLSX format to a stream. |
| ExportToXlsxAsync(String, TreeListXlExportOptions) | Exports TreeList data in XLSX format and downloads the resulting file to the client machine. |
| FilterBy(String, TreeListFilterRowOperatorType, Object) | Filters TreeList data by the specified column value. |
| GetColumnEditSettings<T>(String) | Returns editor settings of the column bound to the specified data source field. |
| GetColumns() | Returns a collection of all treelist columns. |
| GetDataColumns() | Returns a data column collection. |
| GetDataItem(Int32) | Returns a data source item bound to the row with the specified visible index. |
| GetDataItemValue(Object, String) | Returns the value of the specified field for the specified data item. |
| GetEditContext() | Returns the edit context. |
| GetFieldFilterCriteria(String) | Returns the filter criteria applied to the specified field of the bound data source. |
| GetFilterCriteria() | Returns the filter criteria applied to TreeList data. |
| GetFocusedDataItem() | Returns a data item bound to the focused data row. |
| GetFocusedRowIndex() | Returns the visible index of the focused row. |
| GetHashCode() | Serves as the default hash function. Inherited from Object. |
| GetPageCount() | Returns the total number of pages in the TreeList. |
| GetRowValue(Int32, String) | Returns the value of the data source field in the specified row. |
| GetSortedColumns() | Gets the collection of sorted columns. |
| GetStartRowVisibleIndex() | Gets the visible index of the first row on the current page. |
| GetTotalSummaryDisplayText(ITreeListSummaryItem) | Gets a total summary item’s display text. |
| GetTotalSummaryFormattedValue(ITreeListSummaryItem) | Gets a total summary item’s formatted value. |
| GetTotalSummaryItems() | Returns the collection of total summary items. |
| GetTotalSummaryLabel(ITreeListSummaryItem) | Returns the name of a total summary‘s function name. |
| GetTotalSummaryValue(ITreeListSummaryItem) | Gets a total summary item’s value. |
| GetType() | Gets the Type of the current instance. Inherited from Object. |
| GetVisibleColumns() | Returns a collection of visible columns sorted based on their display order. |
| GetVisibleRowCount() | Returns the total number of visible rows in the TreeList. |
| IsDataItemFocused(Object) | Returns whether the row bound to the specified data item is focused. |
| IsDataItemSelected(Object) | Returns whether the row that corresponds to the specified data item is selected. |
| IsEditing() | Returns whether the TreeList is being edited. |
| IsEditingNewRow() | Returns whether a new TreeList row is being edited. |
| IsEditingRow(Int32) | Returns whether the specified TreeList row is being edited. |
| IsRowExpanded(Int32) | Returns whether the row with the specified visible index is expanded. |
| IsRowFocused(Int32) | Returns whether the row with the specified visible index is focused. |
| IsRowSelected(Int32) | Returns whether the specified row is selected. |
| LoadLayout(TreeListPersistentLayout) | Restores the TreeList layout. |
| MakeCellVisible(Int32, String) | Navigates to the cell displayed at the intersection of the specified row and data column. |
| MakeRowVisible(Int32) | Makes the row with the specified visible index visible on screen. |
| MemberwiseClone() protected | Creates a shallow copy of the current Object. Inherited from Object. |
| ReferenceEquals(Object, Object) static | Determines whether the specified Object instances are the same instance. Inherited from Object. |
| RefreshSummary() | Refreshes all total summary values in the TreeList. |
| Reload() | Reloads TreeList data. |
| SaveChangesAsync() | Triggers validation and raises the EditModelSaving event if validation succeeds. The method immediately raises this event if validation is disabled. |
| SaveLayout() | Saves information about the TreeList layout. |
| SelectAllAsync(Boolean) | Selects or deselects all rows in the TreeList. |
| SelectAllOnPage(Boolean) | Selects or deselects all rows on the currently visible page except for child rows of collapsed items. |
| SelectDataItem(Object, Boolean) | Selects or deselects a row that corresponds to the specified data item. |
| SelectDataItems(IEnumerable<Object>, Boolean) | Selects or deselects rows that correspond to the specified data items. |
| SelectRow(Int32, Boolean) | Selects or deselects a row with the specified visible index. |
| SelectRows(IEnumerable<Int32>, Boolean) | Selects or deselects rows with the specified visible indexes. |
| SetFieldFilterCriteria(String, CriteriaOperator) | Applies a filter to the specified data field. |
| SetFilterCriteria(CriteriaOperator) | Applies a filter to TreeList data. |
| SetFocusedRowIndex(Int32) | Moves focus to the row with the specified visible index. |
| ShowColumnChooser() | Shows the column chooser in the center of the treelist. |
| ShowColumnChooser(DialogDisplayOptions) | Shows the column chooser and positions it based on specified display options. |
| ShowColumnChooser(String) | Shows the column chooser below the specified target element. |
| ShowFilterBuilder() | Opens the filter builder dialog. |
| ShowRowDeleteConfirmation(Int32) | Displays the delete confirmation dialog for the specified row. If a user confirms the operation, the method raises the DataItemDeleting event. |
| SortBy(String, TreeListColumnSortOrder, Int32) | Sorts data by column values in the specified order and specifies the sorted column’s index. |
| SortBy(String, TreeListColumnSortOrder) | Sorts data by column values in the specified order. |
| SortBy(String) | Sorts data by the specified column values. |
| StartEditNewRowAsync(Int32, String) | Starts editing a new child node of the row with the specified visible index. |
| StartEditNewRowAsync(String) | Starts editing a new root node. |
| StartEditRowAsync(Int32, String) | Starts editing the row with the specified visible index. |
| ToString() | Returns a string that represents the current object. Inherited from Object. |
| WaitForDataLoadAsync() | Returns a task that completes when pending asynchronous data load operations are completed. |
| WaitForRemoteSourceRowLoadAsync(Int32) | Returns a task that is completed when the specified row of a remote data source is loaded. |
| Name | Description |
|---|---|
| ChildrenLoading | Allows you to populate a node with child nodes. The TreeList component raises this event for each node during initialization. |
| ChildrenLoadingOnDemand | Allows you to populate a node with child nodes. The TreeList component raises this event when the node is expanded for the first time. |
| CustomizeCellDisplayText | Allows you to customize text displayed within a cell. |
| CustomizeContextMenu | Allows you to customize context menus. |
| CustomizeDataRowEditor | Allows you to customize a cell editor in a data row. |
| CustomizeEditModel | Allows you to customize an automatically generated edit model or create a custom edit model. |
| CustomizeElement | Allows you to customize TreeList cells and rows according to their values. |
| CustomizeFilterMenu | Allows you to customize column filter menu items. |
| CustomizeFilterRowEditor | Allows you to customize a cell editor in the filter row. |
| CustomizeSummaryDisplayText | Allows you to customize the summary display text. |
| CustomSort | Allows you to implement custom logic used to sort data in the TreeList. |
| CustomSummary | Allows you to create custom summary items. |
| DataItemDeleting | Fires after a user confirms the delete operation in the delete confirmation dialog. |
| EditCanceling | Fires before the TreeList cancels the edit operation and discards changes. |
| EditModelSaving | Fires if validation succeeds after a user saves changes or you call the SaveChangesAsync() method. |
| EditStart | Fires before the TreeList starts editing a row. |
| FilterCriteriaChanged | Fires when filter criteria that is applied to TreeList data changes. |
| FocusedRowChanged | Fires when row focus changes. |
| ItemsDropped | Fires when a user drops rows onto the TreeList. |
| LayoutAutoLoading | Fires when the DxTreeList component finishes initialization and starts to load its layout. |
| LayoutAutoSaving | Fires when the TreeList layout changes. |
| PageIndexChanged | Fires when the TreeList’s active page index changes. |
| PageSizeChanged | Fires when the page size changes. |
| RowClick | Fires when a user clicks or taps a TreeList row or focuses a data cell and presses Enter. |
| RowDoubleClick | Fires when a user double clicks a TreeList row. |
| SearchTextChanged | Fires when the search text changes. |
| SelectedDataItemChanged | In single selection mode, fires when a TreeList row is selected. |
| SelectedDataItemsChanged | In multiple selection mode, fires when the selection in the TreeList changes. |
| ShowAllRowsChanged | Fires when the ShowAllRows property value changes. |
See Also