@using System.Globalization

<input @bind="DisplValue" type="number" class="@CssClass" />

@code {

    [Parameter]
    public string CssClass { get; set; } = "";

    [Parameter]
    public string DisplFormat { get; set; } = "0.000";

    [Parameter]
    public decimal Value
    {
        get => decimalVal;
        set => decimalVal = value;
    }

    // [Parameter]
    // public double ValueDouble
    // {
    //     get => (double)decimalVal;
    //     set => decimalVal = (decimal)value;
    // }

    protected string DisplValue
    {
        get => decimalVal.ToString(DisplFormat, culture);
        set
        {
            if (Decimal.TryParse(value, style, culture, out var number))
            {
                decimalVal = Math.Round(number, 3);
            }
        }
    }

    private decimal decimalVal { get; set; } = 0;
    private NumberStyles style = NumberStyles.AllowDecimalPoint | NumberStyles.AllowLeadingSign;
    private CultureInfo culture = CultureInfo.CreateSpecificCulture("en-US");

}