<div class="btn-group" role="group">
    @foreach (var item in ListValuesOrd)
    {
        <button type="button" class="btn btn-sm @btnSel(item.Selected)" @onclick="() => ToggleVal(item)" Title="@item.Tooltip">@item.Text</button>
    }
</div>

@code {

    #region Public Properties

    [Parameter]
    public string ClassDesel { get; set; } = "btn-secondary";

    [Parameter]
    public string ClassSel { get; set; } = "btn-primary";

    [Parameter]
    public EventCallback<ItemData> EC_ValueChanged { get; set; }

    [Parameter]
    public List<ItemData> ListValues { get; set; } = new List<ItemData>();

    /// <summary>
    /// Indica se sia possibile selezionare + valori
    /// </summary>
    [Parameter]
    public bool MultiSel { get; set; } = true;

    #endregion Public Properties

    #region Public Classes

    public class ItemData
    {
        #region Public Properties

        public string CodItem { get; set; } = "";
        public int Ordinal { get; set; } = 0;
        public bool Selected { get; set; } = false;
        public string Text { get; set; } = "";
        public string Tooltip { get; set; } = "";

        #endregion Public Properties
    }

    #endregion Public Classes

    #region Protected Properties

    protected List<ItemData> ListValuesOrd
    {
        get => ListValues.OrderBy(x => x.Ordinal).ToList() ?? new List<ItemData>();
    }

    #endregion Protected Properties

    #region Private Methods

    private string btnSel(bool selected)
    {
        return selected ? ClassSel : ClassDesel;
    }

    private async void ToggleVal(ItemData currItem)
    {
        currItem.Selected = MultiSel ? !currItem.Selected : true;
        // se non abilitata sel multipla
        if (!MultiSel)
        {
            // deseleziono gli altri...
            foreach (var item in ListValues)
            {
                if (!item.CodItem.Equals(currItem.CodItem))
                {
                    item.Selected = false;
                }
            }
        }
        await EC_ValueChanged.InvokeAsync(currItem);
    }

    #endregion Private Methods
}