using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.IO;

namespace 流_字节_字符_字符串

{

    class Program

    {

        #region 简单介绍

        //流：二进制

        //字节：无符号整数

        //字符：Unicode编码字符

        //字符串：多个Unicode编码字符

        #endregion

        static void Main(string[] args)

        {

            //byte a = 99;

            //byte b = 199;

            //byte c =(byte) (a + b);//这边溢出等于42

            //Console.WriteLine(c);

            string str = "huage1234";

            using (MemoryStream m_stream = new MemoryStream())

            {

                Console.WriteLine(string.Format("初始字符串:{0}", str));

                if (m_stream.CanWrite)//如果可写入

                {

                    byte[] strBytes = Encoding.Default.GetBytes(str);//string->byte[]

                    //从数组中的第一个位置开始写入，长度为3，写完之后stream里面有数据

                    m_stream.Write(strBytes, , );//byte[]->stream

                    Console.WriteLine("现在Stream.Postion在第{0}位置", m_stream.Position + );

                }

                byte[] resBytes = new byte[m_stream.Length];

                m_stream.Position = ;//这边要设置一下stream的起始位置,不然读取的时候从不是起始位置读取到不全的数据

                var count = m_stream.Read(resBytes, , (int)resBytes.Length);//stream->byte[]

                var resStr = Encoding.Default.GetString(resBytes);//byte[]->字符串

                Console.WriteLine(resStr);

            }

            char[] charArr = str.ToCharArray();//string->char[]

            string res = new string(charArr);//char[]->string

            string charStr = "";

            foreach (var a in charArr)  //char[]->string

                charStr += a;

            byte[] charBytes = Encoding.Default.GetBytes(charArr);//char[]->byte[]

            char[] byteChar = Encoding.Default.GetChars(charBytes);//byte[]->char[]

            byte[] charBytes1 = new byte[charArr.Length];

            char[] byteChar1 = new char[charBytes1.Length];

            for (var i = ; i < charArr.Length; i++)

                charBytes1[i] = Convert.ToByte(charArr[i]);//char[]->byte[]

            for (var j = ; j < charBytes1.Length; j++)

                byteChar1[j] = Convert.ToChar(charBytes1[j]);//byte[]->char[]

            Console.ReadKey();

        }

    }

}