class Program
    {
        const int dataArraySize = 200;
        const int streamBufferSize = 2000;
        const int numberOfLoops = 10000;
        static int totalSize = 0;
        static void Main(string[] args)
        {
            StringBuilder sbFS = new StringBuilder();
            StringBuilder sbBS = new StringBuilder();
            FileStream fs = new FileStream(@"E:\1.txt", FileMode.Open, FileAccess.Read);
            BufferedStream bs = new BufferedStream(fs, streamBufferSize);
            byte[] by = new byte[dataArraySize];
            int temp = 0;
            try
            {
                //FileStream Read
                DateTime startFS = DateTime.Now;
                while ((temp = fs.Read(by, 0, by.Length)) > 0)
                {
                    totalSize += temp;
                    //sbFS.Append(Encoding.GetEncoding("gb2312").GetString(by));
                }
                double endFS = (DateTime.Now - startFS).TotalMilliseconds;
                Console.WriteLine("FileStream Read TotalBit ： {0}", totalSize);
                Console.WriteLine("FileStream Read Time ： {0}", endFS.ToString("F5"));

                //Reset
                temp = 0;
                totalSize = 0;
                Array.Clear(by, 0, by.Length);
                fs.Seek(0, SeekOrigin.Begin);

                //BufferedStream
                DateTime startBS = DateTime.Now;
                while ((temp = bs.Read(by, 0, by.Length)) > 0)
                {
                    totalSize += temp;
                    //sbBS.Append(Encoding.GetEncoding("gb2312").GetString(by));
                }
                double endBS = (DateTime.Now - startBS).TotalMilliseconds;
                Console.WriteLine("BufferedStream Read TotalBit ： {0}", totalSize);
                Console.WriteLine("BufferedStream Read Time ： {0}", endBS.ToString("F5"));
            }
            finally
            {
                bs.Close();
                bs.Dispose();
                fs.Close();
                fs.Dispose();
            }
            Console.ReadLine();
        }
    }