字节数组与字符串（字符数组）的转换操作

标签：编码   转换   

1、默认编码方式转换：

（1）string（char[]）转换为byte[]

byte[] byteArr = System.Text.Encoding.Default.GetBytes(char[]);
byte[] byteArr = System.Text.Encoding.Default.GetBytes(string);
byte[] byteArr = System.Text.Encoding.Default.GetBytes(char[], startindex, count);
int count = System.Text.Encoding.Default.GetBytes(char * , count, byte*, startindex);
int count = System.Text.Encoding.Default.GetBytes(char[] , startindex, count, byte[], startindex);
int count = System.Text.Encoding.Default.GetBytes(s , startindex, count, byte[], startindex);

（2）byte[]转换为string(char[])

string str = System.Text.Encoding.Default.GetString ( byteArray );
string str = System.Text.Encoding.Default.GetString ( byteArray, startindex, count );

2、其他编码方式转换

将上述Default更换为ASCII、Unicode、UTF8、UTF7、UTF32等编码方式，然后调用对应方法就可以转换。

string str = "01";
byte[] byteArr = System.Text.Encoding.ASCI.GetBytes(str);

byte[] byteArr = new byte[]{0x4e, 0x01};
string a = System.Text.Encoding.BigEndianUnicode.GetString(byteArr);

3、Byte[]中的十六进制转换为十六进制字符串

public static string ToHexString ( byte[] bytes ) 
{  
    string hexString = string.Empty;  
    if ( bytes != null )  
    {  
        StringBuilder strB = new StringBuilder ();  
 
        for ( int i = 0; i < bytes.Length; i++ )  
        {  
            strB.Append ( bytes[i].ToString ( "X2" ) );  
        }  
        hexString = strB.ToString ();  
    }  
    return hexString;  
}  

public static byte[] GetBytes(string hexString, out int discarded)  
{  
    discarded = 0;  
    string newString = "";  
    char c;  
    // remove all none A-F, 0-9, characters  
    for (int i=0; i<hexstring.length; i++) 
   {  
        c = hexString[i];  
        if (IsHexDigit(c))  
            newString += c;  
        else 
            discarded++;  
    }  
    // if odd number of characters, discard last character  
    if (newString.Length % 2 != 0)  
    {  
        discarded++;  
        newString = newString.Substring(0, newString.Length-1);  
    }  
 
    int byteLength = newString.Length / 2;  
    byte[] bytes = new byte[byteLength];  
    string hex;  
    int j = 0;  
    for (int i=0; i<bytes.length; i++) 
   {  
        hex = new String(new Char[] {newString[j], newString[j+1]});  
        bytes[i] = HexToByte(hex);  
        j = j+2;  
    }  
    return bytes;  
}  

字节数组与字符串（字符数组）的转换操作

标签：编码   转换   

原文地址：http://blog.csdn.net/u010487568/article/details/39327275