Long press sample for Blazor

BlazorLongPressSample.razor

<div style="
    width: 150px;
    height: 150px;
    display: grid;
    align-content: center;
    justify-content: center;
    border: 2px solid dodgerblue;"
    @onpointerdown="PointerDown"
    @onpointerup="PointerUp">
    @Text
</div>

@code {

    private string Text;
    private DateTime PointerDownTime;

    public void PointerDown()
    {
        PointerDownTime = DateTime.UtcNow;
        Text = "Pointer down";
    }

    public void PointerUp()
    {
        var downTime = (DateTime.UtcNow.Ticks - PointerDownTime.Ticks) / TimeSpan.TicksPerMillisecond;

        if (downTime > 400)
        {
            Text = "Long press";
        }
        else
        {
            Text = "Short press";
        }
    }
    
}