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Double value to exponential formal

using System; using System.Globalization; public class MainClass {    public static void Main()    {         double value = 86000;         Console.WriteLine(value.ToString("0.###E+0", CultureInfo.InvariantCulture));         Console.WriteLine(value.ToString("0.###E+000", CultureInfo.InvariantCulture));         Console.WriteLine(value.ToString("0.###E-000", CultureInfo.InvariantCulture));    } } /* 8.6E+4 8.6E+004 8.6E004 */