maftieu

        /// <summary>
        /// Changes the file extension by moving it.
        /// </summary>
        /// <param name="filePath">Full path to the file for which change the extension.</param>
        /// <param name="extension">The new file extension.</param>
        /// <returns>The path to the file, with the new extension.</returns>
        private string ChangeFileExtension(string filePath, string extension)
        {
            if (!extension.StartsWith("."))
                extension = "." + extension;

maftieu

        static string FormatFileSize(long value, string format = null)
        {
            var multipliers = new string[] { "o", "Kio", "Mio" };
            var midx = 0;

            while ((Math.Abs(value) >= 1024) && (midx < multipliers.Length))
            {
                value /= 1000;
                ++midx;
            }