add commas using String.Format for number and

Question

Using String.Format how can i ensure all numbers have commas after every 3 digits eg 23000 = \"23,000\" and that 0 returns \"0\".

String.Format(\"{0:n}\", 0); //give

Answer 1

You can also play around a little with the CultureInfo object, if none of the other solutions work well for you:

        var x = CultureInfo.CurrentCulture;
        x.NumberFormat.NumberDecimalSeparator = ",";
        x.NumberFormat.NumberDecimalDigits = 0;
        x.NumberFormat.NumberGroupSizes = new int[] {3};