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Format double with decimal points

using System; using System.Globalization; public class Example {    public static void Main()    {         double doubleNumber;         doubleNumber = 123456.1234;         Console.WriteLine(doubleNumber.ToString("F", CultureInfo.InvariantCulture));         Console.WriteLine(doubleNumber.ToString("F0", CultureInfo.InvariantCulture));                  doubleNumber = -12345678.1234;         Console.WriteLine(doubleNumber.ToString("F1", CultureInfo.InvariantCulture));           Console.WriteLine(doubleNumber.ToString("F3", CultureInfo.CreateSpecificCulture("es-ES")));       } } /* 123456.12 123456 -12345678.1 -12345678,123 */