Question

I am trying to format a double to a string format which contains thousands separators and all trailing decimal numbers in german number format. But I can’t get it to work (am I really that foolish?).

What I want is the following:

Input: double doubleVal = 123456.789;
Output: 123.456,789

I already used NumberFormats and other stuff but I don’t get what I want. Can somebody please help?

Answer 1

I’d expect you should be able to do it with:

string text = value.ToString("N");

… specifying the German culture if it’s not the thread’s current culture.

Sample:

using System;
using System.Globalization;

class Test
{
    static void Main()
    {
        double d = 123456.789;
        CultureInfo culture = CultureInfo.CreateSpecificCulture("de-DE");

        Console.WriteLine(d.ToString("N3", culture)); // 123.456,789
    }                   
}

Note that the 3 specifies the number of digits after the decimal point.