29-12-2015 10:59:48 C# / IO 0 Bookmark(s) 226 View(s)

 

public static class FileSizeHelper
{
    public static string ToFileSize(this long size)
    {
        var units = new[] { "bytes", "KB", "MB", "GB", "TB" };
        var index = 0;
        double dSize = size;
        while (dSize > 1024)
        {
            dSize /= 1024;
            index++;
        }

        if (index < 2)
        {
            return string.Format("{0:0} {1}", dSize, units[index]);
        }

        return string.Format("{0:0.00} {1}", dSize, units[index]);
    }
}