ByteArray的操作总结(复制、打印、位运算)

1. 字节数组的复制

Method A：Array.Clone()

Clone返回的是Object对象，需要强类型转换；Clone会创建一个新的对象，并将value赋给dec

byte[] src = new byte[];
byte[] dst= new byte[];
dst = (byte[])src.Clone();

Method B: Array.Coby

有多个重载版本

byte[] src = new byte[];    //原数组
byte[] dst = new byte[];    //目标数组
int srcOffset = ;    //原数组偏移量
int dstOffset = ;    //目标数组偏移量
Array.Copy(src, srcOffset, dec, dstOffset, dst.Length);

Method C: Buffer.BlockCopy

该方法最为常用

byte[] src = new byte[];    //原缓冲区
byte[] dst = new byte[];    //目标缓冲区
int srcOffset = ;    //src字节偏移量,从0开始
int dstOffset = ;    //dst字节偏移量,从0开始
Buffer.BlockCopy(src, srcOffset, dst, dstOffset, dst.Length);

2. 字节数组的转换

Method A: Print ByteArray

byte[] array = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04 };
string str = BitConverter.ToString(array);
//str = "00-01-02-03-04"

Method B: Encoding.Default.GetString(byteArray)

将数组中的所有字节解析为应字符串

byte[] array = new byte[] { 0xFE, 0xFE, 0xFE };
string str = Encoding.ASCII.GetString(array);
//str = "???"

Method C: 源类型未知

byte[] src = new byte[] { 0xFE, 0xFE, 0xFE };
StreamReader sr = new StreamReader(new MemoryStream(src));
string str = sr.ReadToEnd();
//str = "???"

3. 字符串转字节数组: Encoding.Default.GetBytes()

string str = "???";
byte[] bytes = Encoding.Default.GetBytes(str);
//bytes = [0xFE, 0xFE, 0xFE, 0xFE]