Set the GridControl‘s name to PART_GridControl.Use the PopupBaseEdit.PopupContentTemplate property to specify a custom GridControl.Set the LookUpEdit.AutoPopulateColumns property to false.This example shows how to customize the GridControl displayed in the LookUpEdit‘s popup window. To manually customize a data grid and embed it within the look-up editor, use the PopupBaseEdit.PopupContentTemplate property. The GetGridControl() method returns a data grid embedded in the editor’s drop-down window. The EditNonEditableTemplate property specifies the editor template if you set the IsTextEditable property to false: The EditTemplate property allows you to define the edit box appearance. View Example: WPF LookUpEdit - Process New Values Customize the Edit Box To validate the new value, handle the BaseEdit.Validate event. To respond to editor value changes, handle the BaseEdit.EditValueChanged event. The TextEditBase.Text property gets the text displayed within the lookup editor’s text box. Use the BaseEdit.EditValue property to get the editor’s value. Otherwise, the LookupEdit substitutes your columns with the automatically generated ones. If you create columns manually for the embedded grid, set the AutoPopulateColumns property to false to disable automatic column generation. ![]() The editor automatically generates columns for all the bound data object’s public properties. Private Set(ByVal value As ObservableCollection(Of Customer)) Public Property Customers As ObservableCollection(Of Customer) Private _Customers As (Of LookupEditDemo.Customer)ĭim people As ObservableCollection(Of Customer) = New ObservableCollection(Of Customer)() TableView. The following code sample prevents the activation of the root node’s editor.Public partial class MainWindow : Window To fix a row programmatically, use any of the following methods: TableView.FixRow - Fixes a row at the top or at the bottom of the grid. Allows you to prevent the activation of the editor. The TreeViewControl includes the following events to process user actions: Event In this case, the TreeViewControl adjusts its appearance and synchronizes the editor with the source field specified by the TreeViewFieldName property. It provides the corresponding tree derivation mode (s), specified via the TreeListView.TreeDerivationMode property, for each type of a data structure: Data Structure Type. The following code sample wraps text in browse mode and adds a delete button in edit mode:įor the DevExpress Data Editors (the BaseEdit class descendants), you can set the editor’s Name property to PART_Editor. In data bound mode, the TreeListView can display information in a tree from a self-referential (flat) or hierarchical data structure. The Data Grid raises the DefaultViewChanged event when a user zooms into or out of a detail view. ![]() ![]() The template that displays an editor used to edit node values. Use the Data Grid’s DefaultView property to get the currently maximized detail view. The TreeViewControl includes templates that allow you to define editors that display (when the control is in browse mode) and edit (when the control is in edit mode) node values: Template You can use different in-place editors to display and edit data. The following code sample applies a mask that allows users to enter letters, dots, and spaces.įor the DevExpress Data Editors (the BaseEdit class descendants), you can set the editor’s Name property to PART_Editor. Use the EditSettings property to manually define the editor. For example, the TreeViewControl uses the TextEdit to edit text/string values, and the CheckEdit to edit Boolean values. The TreeViewControl uses an in-place editor based on data type. To allow users to edit the TreeViewControl, set the AllowEditing property to true. The TreeViewControl uses the DevExpress Data Editors to edit node values. Returns the text displayed within the specified node.įor information on how to obtain nodes, refer to the following help topic: Obtain Nodes and Their Row Handles. To learn more, see Multiple Row Selection and Multiple Cell Selection. Multiple cell selection (block selection) is enabled by setting the MultiSelectMode property to TableViewSelectMode.Cell. ![]() You can use the TreeViewControl‘s methods to obtain and change node values. To enable multiple node selection, set the MultiSelectMode property to TableViewSelectMode.Row.
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