ArgusTV.Recorders.Common.Utility.GetFreeFileName C# (CSharp) Метод

        public static string GetFreeFileName(string baseFileName, string extension, int extraCharsRequired = 0)
        {
            int maxPath = _maxPath - extraCharsRequired;

            if (!String.IsNullOrEmpty(extension) && !extension.StartsWith("."))
            {
                extension = "." + extension;
            }

            if (baseFileName.Length > maxPath - extension.Length - 1)
            {
                baseFileName = baseFileName.Substring(0, maxPath - extension.Length - 1);
            }

            while (baseFileName.Length < 4)
            {
                baseFileName += '_';
            }

            string fileName = baseFileName + extension;

            int count = 1;
            while (File.Exists(fileName)
                && count < 256 * 8)
            {
                fileName = baseFileName.Substring(0, baseFileName.Length - 3) + count.ToString("X", CultureInfo.InvariantCulture).PadLeft(3, '_') + extension;
                count++;
            }

            return fileName;
        }