TCP/IP通信或串口通信数据类型转换

/// <summary>
/// string转换为byte[]数组
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static byte[] GetBytes(string str)
{
byte[] bytes = new byte[str.Length * sizeof(char)];
System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
return bytes;
}

/// <summary>
/// byte[]数组转换为strng
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
public static string GetString(byte[] bytes)
{
char[] chars = new char[bytes.Length / sizeof(char)];
System.Buffer.BlockCopy(bytes, 0, chars, 0, bytes.Length);
return new string(chars);
}

/// <summary>
/// 字节数组转16进制字符串
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
public static string byteToHexStr(byte[] bytes)
{
string returnStr = "";
if (bytes != null)
{
for (int i = 0; i < bytes.Length; i++)
{
returnStr += bytes[i].ToString("X2");
}
}
return returnStr;
}

/// <summary>
/// byte转换为string
/// </summary>
/// <param name="bytes"></param>
/// <param name="len"></param>
/// <returns></returns>
public static string ToHexString(byte[] bytes, int len)
{
return ToHexString(bytes, 0, len);
}

public static string ToHexString(byte[] bytes, int start, int len)
{
string strReturn = "";
for (int i = start; i < (start + len); i++)
{
byte bt = bytes[i];
strReturn += bt.ToString("x2");
}
return strReturn;
}

/// <summary>
/// 16进制转ASCII
/// </summary>
/// <param name="Msg"></param>
/// <returns></returns>
public static string HexToASCII(string Msg)
{
byte[] buff = new byte[Msg.Length / 2];
string Message = "";
for (int i = 0; i < buff.Length; i++)
{
buff[i] = byte.Parse(Msg.Substring(i * 2, 2),
System.Globalization.NumberStyles.HexNumber);
}

System.Text.Encoding chs = System.Text.Encoding.ASCII;
Message = chs.GetString(buff);
return Message;
}

/// <summary>
/// 字符串转16进制字节数组
/// </summary>
/// <param name="hexString"></param>
/// <returns></returns>
private static byte[] strToToHexByte(string hexString)
{
hexString = hexString.Replace(" ", "");
if ((hexString.Length % 2) != 0)
hexString += " ";
byte[] returnBytes = new byte[hexString.Length / 2];
for (int i = 0; i < returnBytes.Length; i++)
returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
return returnBytes;
}

/// <summary>
/// 16进制转换为byte[]
/// </summary>
/// <param name="hexStr"></param>
/// <returns></returns>
public static byte[] ToByesByHex(string hexStr)
{
int len = hexStr.Length;

byte[] data = new byte[len / 2];

for (int k = 0; k < data.Length; k++)
{
data[k] = Convert.ToByte(hexStr.Substring(k * 2, 2), 16);
//k = k* 2;
}

return data;
}

/// <summary>
/// 从汉字转换到16进制
/// </summary>
/// <param name="s"></param>
/// <param name="charset">编码,如"utf-8","gb2312"</param>
/// <param name="fenge">是否每字符用逗号分隔</param>
/// <returns></returns>
public static string ToHex(string s, string charset, bool fenge)
{
if ((s.Length % 2) != 0)
{
s += " ";//空格
//throw new ArgumentException("s is not valid chinese string!");
}
System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
byte[] bytes = chs.GetBytes(s);
string str = "";
for (int i = 0; i < bytes.Length; i++)
{
str += string.Format("{0:X}", bytes[i]);
if (fenge && (i != bytes.Length - 1))
{
str += string.Format("{0}", ",");
}
}
return str.ToLower();
}

///<summary>
/// 从16进制转换成汉字
/// </summary>
/// <param name="hex"></param>
/// <param name="charset">编码,如"utf-8","gb2312"</param>
/// <returns></returns>
public static string UnHex(string hex, string charset)
{
if (hex == null)
throw new ArgumentNullException("hex");
hex = hex.Replace(",", "");
hex = hex.Replace("\n", "");
hex = hex.Replace("\\", "");
hex = hex.Replace(" ", "");
if (hex.Length % 2 != 0)
{
hex += "20";//空格
}
// 需要将 hex 转换成 byte 数组。
byte[] bytes = new byte[hex.Length / 2];

for (int i = 0; i < bytes.Length; i++)
{
try
{
// 每两个字符是一个 byte。
bytes[i] = byte.Parse(hex.Substring(i * 2, 2),
System.Globalization.NumberStyles.HexNumber);
}
catch
{
// Rethrow an exception with custom message.
throw new ArgumentException("hex is not a valid hex number!", "hex");
}
}
System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
return chs.GetString(bytes);
}

/// <summary>
/// Unicode转汉字
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public static string UnicodeToGB(string text)
{
System.Text.RegularExpressions.MatchCollection mc = System.Text.RegularExpressions.Regex.Matches(text, "\\\\u([\\w]{4})");
if (mc != null && mc.Count > 0)
{
foreach (System.Text.RegularExpressions.Match m2 in mc)
{
string v = m2.Value;
string word = v.Substring(2);
byte[] codes = new byte[2];
int code = Convert.ToInt32(word.Substring(0, 2), 16);
int code2 = Convert.ToInt32(word.Substring(2), 16);
codes[0] = (byte)code2;
codes[1] = (byte)code;
text = text.Replace(v, Encoding.Unicode.GetString(codes));
}
}
else
{

}
return text;
}

public static string unicodetogbx(string text)
{
System.Text.RegularExpressions.MatchCollection mc = System.Text.RegularExpressions.Regex.Matches(text, "\\\\u([\\w]{4})");
string a = text.Replace("\\u", "");
char[] arr = new char[mc.Count];
for (int i = 0; i < arr.Length; i++)
{
arr[i] = (char)Convert.ToInt32(a.Substring(i * 4, 4), 16);
}
string c = new string(arr);
return c;
}

/// <summary>
/// Unicode转汉字（测试通过）
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public static string UnicodeToCn(string text)
{
string cd = text;
string cd2 = cd.Replace(" ", "");
cd2 = cd2.Replace("\r", "");
cd2 = cd2.Replace("\n", "");
cd2 = cd2.Replace("\r\n", "");
cd2 = cd2.Replace("\t", "");
if (cd2.Length % 4 != 0)
{
//MessageBox.Show("Unicode编码为双字节，请删多或补少！确保是二的倍数。");
return "";
}
else
{
int len = cd2.Length / 2;
byte[] b = new byte[len];
for (int i = 0; i < cd2.Length; i += 2)
{
string bi = cd2.Substring(i, 2);
b[i / 2] = (byte)Convert.ToInt32(bi, 16);
}
string o = Encoding.Unicode.GetString(b);
//textBox2.Text = o;
return o;
}
}

/// <summary>
/// 字符串转为UniCode码字符串
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static string StringToUnicode(string s)
{
char[] charbuffers = s.ToCharArray();
byte[] buffer;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < charbuffers.Length; i++)
{
buffer = System.Text.Encoding.Unicode.GetBytes(charbuffers[i].ToString());
sb.Append(String.Format("//u{0:X2}{1:X2}", buffer[1], buffer[0]));
}
return sb.ToString();
}
/// <summary>
/// Unicode字符串转为正常字符串
/// </summary>
/// <param name="srcText"></param>
/// <returns></returns>
public static string UnicodeToString(string srcText)
{
string dst = "";
string src = srcText;
int len = srcText.Length / 6;
for (int i = 0; i <= len - 1; i++)
{
string str = "";
str = src.Substring(0, 6).Substring(2);
src = src.Substring(6);
byte[] bytes = new byte[2];
bytes[1] = byte.Parse(int.Parse(str.Substring(0, 2), NumberStyles.HexNumber).ToString());
bytes[0] = byte.Parse(int.Parse(str.Substring(2, 2), NumberStyles.HexNumber).ToString());
dst += Encoding.Unicode.GetString(bytes);
}
return dst;
}