DxListBox<TData, TValue>.SelectAllAsync() Method

Selects all available items in the List Box.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v25.1.dll

NuGet Package: DevExpress.Blazor

Declaration

public Task SelectAllAsync()

Returns

Type	Description
Task	The task that is completed when all available items are selected.

Remarks

Call the SelectAllAsync method to select all selectable List Box items. This method does not affect items hidden by a filter or disabled items.

To deselect all items, call the DeselectAllAsync() method.

To access selected items, implement two-way binding for the Values property or handle the SelectedDataItemsChanged event.

<DxButton Click="SelectAll">Select All Items</DxButton>
<DxButton Click="DeselectAll">Deselect All Items</DxButton>

<DxListBox Data="@Staff.DataSource"
           @ref=MyListBox
           TextFieldName="@nameof(Person.Text)"
           SelectionMode="ListBoxSelectionMode.Multiple"
           ShowCheckboxes="true"
           ShowSelectAllCheckbox="true"
           @bind-Values="@Values">
</DxListBox>

@code {
    IListBox<Person,Person> MyListBox { get; set; }
    IEnumerable<Person> Values { get; set; }

    async Task SelectAll(MouseEventArgs args) {
        await MyListBox.SelectAllAsync();
    }
    async Task DeselectAll(MouseEventArgs args) {
        await MyListBox.DeselectAllAsync();
    }
}

Implements

SelectAllAsync()