---
layout: post
title: How to select items in Blazor ListBox | Syncfusion
description: Select or deselect items programmatically in Blazor ListBox using the SelectItemsAsync method today easily.
platform: Blazor
control: List Box
documentation: ug
---

# How to select items in Blazor ListBox

Use the [SelectItemsAsync](https://help.syncfusion.com/cr/blazor/Syncfusion.Blazor.DropDowns.SfListBox-2.html#Syncfusion_Blazor_DropDowns_SfListBox_2_SelectItemsAsync__1___0_System_Boolean_) method to programmatically select or deselect items in the Blazor ListBox. The first parameter accepts the value or values to act on, and the second parameter specifies the selection state: set it to `true` to select the items, or `false` to deselect them.

In the following example, selection is triggered from the `Created` event to ensure the component is fully initialized before the method is called. The `TValue` is `string[]`, which enables multiple selection. Values that do not match any item are silently ignored and no exception is thrown.

```cshtml
@using Syncfusion.Blazor.DropDowns

<SfListBox TValue="string[]" TItem="VehicleData" DataSource="@Vehicles" @ref="ListBoxObj">
    <ListBoxEvents TValue="string[]" Created="created" TItem="VehicleData"></ListBoxEvents>
    <ListBoxFieldSettings Text="Text" Value="Text" />
</SfListBox>

@code {
    SfListBox<string[],VehicleData> ListBoxObj;
    public List<VehicleData> Vehicles = new List<VehicleData> {
        new VehicleData { Text = "Hennessey Venom", Id = "Vehicle-01" },
        new VehicleData { Text = "Bugatti Chiron", Id = "Vehicle-02" },
        new VehicleData { Text = "Bugatti Veyron Super Sport", Id = "Vehicle-03" },
        new VehicleData { Text = "SSC Ultimate Aero", Id = "Vehicle-04" },
        new VehicleData { Text = "Koenigsegg CCR", Id = "Vehicle-05" },
        new VehicleData { Text = "McLaren F1", Id = "Vehicle-06" },
        new VehicleData { Text = "Aston Martin One-77", Id = "Vehicle-07" },
        new VehicleData { Text = "Jaguar XJ220", Id = "Vehicle-08" }
    };

    public class VehicleData {
      public string Text { get; set; }
      public string Id { get; set; }
    }
    public string[] Value = new string[] { "Bugatti Chiron" };
    private async Task created(object args)
    {
        await ListBoxObj.SelectItemsAsync(this.Value, true);
    }
}

```

![Selecting items in the Blazor ListBox](./../images/blazor-listbox-item-selection.webp)

## See also

* [Get Items in Blazor ListBox](./get-items.md)
* [Bind Change Events in Blazor ListBox](./bind-change-event.md)
* [Add or Remove Items in Blazor ListBox](./add-items.md)
* [Data Binding in Blazor ListBox](./../data-binding.md)