Error Node
The TreeList allows you to manually validate the edited node by enabling the MVCxTreeListSettingsEditing.ShowModelErrorsForEditors property. An error node is automatically displayed below the edited node.

The table below lists the main members that affect element appearance and functionality.
| Characteristics | Members |
|---|---|
| Content | TreeListExtension.SetEditErrorText |
| Style | TreeListStyles.Error (via TreeListSettings.Styles.Error) |