VAGSuite.ctrlAirmassResult.readdatafromfile C# (CSharp) Method

        private byte[] readdatafromfile(string filename, int address, int length)
        {
            byte[] retval = new byte[length];
            try
            {
                FileStream fsi1 = File.OpenRead(filename);
                while (address > fsi1.Length) address -= (int)fsi1.Length;
                BinaryReader br1 = new BinaryReader(fsi1);
                fsi1.Position = address;
                string temp = string.Empty;
                for (int i = 0; i < length; i++)
                {
                    retval.SetValue(br1.ReadByte(), i);
                }
                retval = reverseEndian(retval);
                fsi1.Flush();
                br1.Close();
                fsi1.Close();
                fsi1.Dispose();
            }
            catch (Exception E)
            {
                Console.WriteLine(E.Message);
            }
            return retval;
        }