<div class="rz-p-12 rz-text-align-center">
    <RadzenNumeric @bind-Value=@value ConvertValue=@MyCustomValueConvert InputAttributes="@(new Dictionary<string,object>(){ { "aria-label", "enter value" }})" />
</div>

@code{
    decimal value;

    decimal MyCustomValueConvert(string value)
    {
        // Accept both comma and dot as decimal separator.
        var decimalSeparator = System.Globalization.CultureInfo.CurrentUICulture.NumberFormat.NumberDecimalSeparator;
        return decimal.Parse(value.Replace(".", decimalSeparator).Replace(",", decimalSeparator));
    }
}