C# 字符串和byte的互相转换

方法一:

//字符串转byte

string StringMessage = "How Are you?";

Console.WriteLine("{0}", StringMessage);

System.Text.ASCIIEncoding ASCII  = new System.Text.ASCIIEncoding();
Byte[] BytesMessage = ASCII.GetBytes(StringMessage);

//byte转字符串

Byte[] BytesMessage;

System.Text.ASCIIEncoding ASCII  = new System.Text.ASCIIEncoding();
String StringMessage = ASCII.GetString( BytesMessage );

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方法二:

//字符串转UTF-8 byte

string StringMessage = "Hello World How Are you? Pi /u03C0 Yen /uFFE5";

System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding();
Byte[] BytesMessage = UTF8.GetBytes(StringMessage);

//UTF-8 byte 转字符串

Byte[] BytesMessage;

System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding();
String StringMessage = UTF8.GetString( BytesMessage );

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//直接使用BinaryFormatter 和 MemoryStream

BinaryFormatter bf = new BinaryFormatter();
byte[] bytes;
MemoryStream ms = new MemoryStream();

string orig = "喂 Hello 谢谢 Thank You";
bf.Serialize(ms, orig);
ms.Seek(0, 0);
bytes = ms.ToArray();

MessageBox.Show("Original bytes Length: " + bytes.Length.ToString());

MessageBox.Show("Original string Length: " + orig.Length.ToString());

for (int i = 0; i < bytes.Length; ++i) bytes[i] ^= 168; // pseudo encrypt
for (int i = 0; i < bytes.Length; ++i) bytes[i] ^= 168; // pseudo decrypt

BinaryFormatter bfx = new BinaryFormatter();
MemoryStream msx = new MemoryStream();
msx.Write(bytes, 0, bytes.Length);
msx.Seek(0, 0);
string sx = (string)bfx.Deserialize(msx);

MessageBox.Show("Still intact :" + sx);

MessageBox.Show("Deserialize string Length(still intact): "
+ sx.Length.ToString());

BinaryFormatter bfy = new BinaryFormatter();
MemoryStream msy = new MemoryStream();
bfy.Serialize(msy, sx);
msy.Seek(0, 0);
byte[] bytesy = msy.ToArray();

MessageBox.Show("Deserialize bytes Length(still intact): "
+ bytesy.Length.ToString());