SelectionChangeSource Enum

Lists values that specify the selection change source.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v25.2.dll

NuGet Package: DevExpress.Blazor

Declaration

public enum SelectionChangeSource

Members

Name	Description
UserAction	Selection changes when a user selects items using mouse/keyboard, or clicks the built-in Select All checkbox (only for ListBox with multiple selection).
ParameterChange	Selection changes when Blazor updates the component’s Value or Values parameter. This happens when you define parameters in component markup or update them using BeginUpdate() and EndUpdate() methods.
ApiCall	For ListBox with multiple selection only: Selection changes when the SelectAllAsync or DeselectAllAsync method is called.

Related API Members

The following properties accept/return SelectionChangeSource values:

• SelectionChangedEventArgs.ChangeSource

Remarks

Handle the DxComboBox.SelectedDataItemChanged, DxListBox.SelectedDataItemsChanged, or DxTagBox.SelectedDataItemsChanged event to respond to item selection changes. Use the ChangeSource argument property to identify the action that caused the selection change.

ComboBox/TagBox items can be selected/deselected in two ways: UserAction, ParameterChange. ListBox item selection can be changed in three ways: UserAction, ParameterChange, ApiCall.

Refer to DxComboBox.SelectedDataItemChanged, DxListBox.SelectedDataItemsChanged, and DxTagBox.SelectedDataItemsChanged event descriptions for examples.