① string类型转成byte[]：
byte[] byteArray = ( str );
② byte[]转成string：
string str = ( byteArray );
③ string类型转成ASCII byte[]：
（"01" 转成 byte[] = new byte[]{ 0x30,0x31}）
byte[] byteArray = ( str );
④ ASCIIbyte[]转成string：
（byte[] = new byte[]{ 0x30, 0x31} 转成"01"）
string str = ( byteArray );
⑤ byte[]转16进制格式string：
new byte[]{ 0x30, 0x31}转成"3031":
public static string ToHexString ( byte[] bytes ) // 0xae00cf => "AE00CF "
{
string hexString = ;
if ( bytes != null )
{
StringBuilder strB = new StringBuilder ();
for ( int i = 0; i < ; i++ )
{
( bytes[i].ToString ( "X2" ) );
}
hexString = ();
}
return hexString;
}
⑥ 16进制格式string 转byte[]：
public static byte[] GetBytes(string hexString, outint discarded)
{
discarded = 0;
string newString = "";
char c;// remove all none A-F, 0-9, charactersfor (int i=0; i
{
c = hexString[i];if (IsHexDigit(c))
newString += c;
else
discarded++;
}// if odd number of characters, discard last characterif ( % 2 != 0) { discarded++;
newString = (0, -1); }
int byteLength = / 2;byte[] bytes = newbyte[byteLength];string hex;int j = 0;for (int i=0; i
hex = new String(new Char[] {newString[j], newString[j+1]});
bytes[i] = HexToByte(hex); j = j+2;
}
return bytes;
}