public string ItemName { get; }

<DxToolbar ItemClick="@OnItemCommonClick">
    <Items>
        <DxToolbarItem Name="Item1" Text="Item1" Tooltip="Item1" />
        <DxToolbarItem Name="Item2" Text="Item2" Tooltip="Item2" />
        <DxToolbarItem Name="Left" BeginGroup="true" IconCssClass="oi oi-align-left" Tooltip="Align Left" />
        <DxToolbarItem Name="Center" IconCssClass="oi oi-align-center" Tooltip="Align Center" />
        <DxToolbarItem Name="Right" IconCssClass="oi oi-align-right" Tooltip="Align Right" />

        <DxToolbarItem Text="Documentation" BeginGroup="true" IconCssClass="oi oi-info" Tooltip="Documentation (opens in a new window)"
                        Alignment="ToolbarItemAlignment.Right" target="_blank"
                        NavigateUrl="https://docs.devexpress.com/Blazor/" />
    </Items>
</DxToolbar>

@ClickedItem

@code {
    public string ClickedItem { get; set; } = "";

    void OnItemCommonClick(ToolbarItemClickEventArgs e) {
        ClickedItem = $"The '{e.ItemName}' button has been clicked";
    }
}