AccountingNext/Schaad.Accounting.Common/Formatting.cs

using System.Globalization;

namespace Schaad.Accounting
{
    public static class Formatting
    {
        private static readonly CultureInfo SwissCulture = CreateSwissCulture();

        public static string ToFormattedString(this decimal value)
            => value.ToString("#,0.00", SwissCulture);

        private static CultureInfo CreateSwissCulture()
        {
            var culture = new CultureInfo("de-CH");
            culture.NumberFormat.NumberGroupSeparator = "'";
            return culture;
        }
    }
}