File size

using System;//j a va 2  s. c  om
using System.IO;

class MainClass
{
    public static void Main(string[] args)
    {
        FileInfo file = new FileInfo("c:\\test.txt");

        Console.WriteLine("Checking file: " + file.Name);
        Console.WriteLine("File exists: " + file.Exists.ToString());

        if (file.Exists)
        {
            Console.Write("File size (bytes): ");
            Console.WriteLine(file.Length.ToString());
            Console.Write("File attribute list: ");
            Console.WriteLine(file.Attributes.ToString());
        }

    }
}

using System;//from java  2s .  co m
using System.Collections.Generic;
using System.Text;


static class Utils
{
    private static readonly double kilobyte = 1024;
    private static readonly double megabyte = 1024 * kilobyte;
    private static readonly double gigabyte = 1024 * megabyte;
    private static readonly double terabyte = 1024 * gigabyte;

    public static string FormatFileSize(double bytes)
    {
        if (bytes > terabyte) return (bytes / terabyte).ToString("0.00 TB");
        else if (bytes > gigabyte) return (bytes / gigabyte).ToString("0.00 GB");
        else if (bytes > megabyte) return (bytes / megabyte).ToString("0.00 MB");
        else if (bytes > kilobyte) return (bytes / kilobyte).ToString("0.00 KB");
        else return bytes + " bytes";
    }
}