c# byte数组转换为字符串

最新推荐文章于 2024-07-30 17:42:39 发布

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本文介绍如何使用C#进行不同数据类型的转换，包括整数到字节数组、字节数组到十六进制字符串等操作，并提供了实用的代码示例。

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Int16 ival = 20;
byte[] btvals = BitConverter.GetBytes(ival);

foreach(byte i in btvals)
//Console.WriteLine( i.ToString()); //10进制显示

Console.WriteLine("0x" + i.ToString("X2")); //16进制显示

byte[] vals = { 0x01, 0xAA, 0xB1, 0xDC, 0x10, 0xDD };

string str = BitConverter.ToString(vals);
Console.WriteLine(str);

str = BitConverter.ToString(vals).Replace("-", "");
Console.WriteLine(str);

/*Output:

0x14

0x00
01-AA-B1-DC-10-DD
01AAB1DC10DD
*/

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

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

///<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>
publicstaticstring 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>
publicstaticstring UnHex(string hex, string charset)
{ 
if (hex==null)
thrownew 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 =newbyte[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.
thrownew ArgumentException("hex is not a valid hex number!","hex");
} 
} 
System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
return chs.GetString(bytes);
}