C#中string與byte[]的轉換幫助類

* @Date 2004/11/30 

* @Description: 

*/ 

using System; 

using System.Text; 

namespace SidleHelper 

{ 

/// <summary> 

/// Summary description for StrHelper. 

/// 命名縮寫： 

/// Str: unicode string 

/// Arr: unicode array 

/// Hex: 二進制資料 

/// Hexbin: 二進制資料用ASCII字元表示 例 字元'1'的hex是0x31表示為hexbin是 '3''1' 

/// Asc: ASCII 

/// Uni: UNICODE 

/// </summary> 

public sealed class StrHelper 

#region Hex與Hexbin的轉換 

public static void Hexbin2Hex(byte[] bHexbin, byte[] bHex, int nLen) 

for(int i=0; i<nLen/2; i++) 

if(bHexbin[2*i] <0x41) 

bHex[i] = Convert.ToByte(((bHexbin[2*i] - 0x30)<<4) & 0xf0); 

} 

else 

bHex[i] = Convert.ToByte(((bHexbin[2*i] - 0x37)<<4) & 0xf0); 

}

if(bHexbin[2*i+1] <0x41) 

bHex[i] |= Convert.ToByte((bHexbin[2*i+1] - 0x30) & 0x0f); 

bHex[i] |= Convert.ToByte((bHexbin[2*i+1] - 0x37) & 0x0f); 

public static byte[] Hexbin2Hex(byte[] bHexbin, int nLen) 

if(nLen%2 !=0) 

return null; 

byte[] bHex = new byte[nLen/2]; 

Hexbin2Hex(bHexbin, bHex, nLen); 

return bHex; 

public static void Hex2Hexbin(byte[] bHex, byte[] bHexbin, int nLen) 

byte c; 

for(int i=0;i<nLen;i++) 

c = Convert.ToByte((bHex[i]>>4) & 0x0f); 

if(c < 0x0a) 

bHexbin[2*i] = Convert.ToByte(c + 0x30); 

bHexbin[2*i] = Convert.ToByte(c + 0x37); 

c = Convert.ToByte(bHex[i]&0x0f); 

bHexbin[2*i+1] = Convert.ToByte(c + 0x30); 

bHexbin[2*i+1] = Convert.ToByte(c + 0x37); 

public static byte[] Hex2Hexbin(byte[] bHex, int nLen) 

byte[] bHexbin = new byte[nLen*2]; 

Hex2Hexbin(bHex, bHexbin, nLen); 

return bHexbin; 

#endregion

#region 數組和字元串之間的轉化 

public static byte[] Str2Arr(String s) 

return (new UnicodeEncoding()).GetBytes(s); 

public static string Arr2Str(byte[] buffer) 

return (new UnicodeEncoding()).GetString(buffer, 0, buffer.Length); 

public static byte[] Str2AscArr(String s) 

return System.Text.UnicodeEncoding.Convert(System.Text.Encoding.Unicode, 

System.Text.Encoding.ASCII, 

Str2Arr(s)); 

public static byte[] Str2HexAscArr(String s) 

byte[] hex = Str2AscArr(s); 

byte[] hexbin = Hex2Hexbin(hex, hex.Length); 

return hexbin; 

public static string AscArr2Str(byte[] b) 

return System.Text.UnicodeEncoding.Unicode.GetString( 

System.Text.ASCIIEncoding.Convert(System.Text.Encoding.ASCII, 

System.Text.Encoding.Unicode, 

b) 

); 

public static string HexAscArr2Str(byte[] buffer) 

byte[] b = Hex2Hexbin(buffer, buffer.Length); 

return AscArr2Str(b); 

#endregion 

本文轉自94cool部落格園部落格，原文連結：http://www.cnblogs.com/94cool/articles/1499350.html，如需轉載請自行聯系原作者