1. byte array -> char array
Byte[] b=new byte[5]{0x01,0x02,0x03,0x04,0x05};
Char[] c=Encoding.ASCII.GetChars(b);
2. char array -> byte array
Char[] c=new char[5]{a,b,c,d,e};
Byte[] b=Encoding.Default.GetBytes(c);
Char[] c=new char[5]{a,b,c,d,e};
Byte[] b=Encoding.Default.GetBytes(c);
3.string 转换成 Char[]
string ss="abcdefg"; 
char[] cc=s.ToCharArray(); 
string ss="abcdefg";
char[] cc=s.ToCharArray();
4.Char[] 转换成string
using System.Text;
StringBuilder sb=new StringBuilder();
foreach(char c in cc)
{
sb.Append(c);
}
string s=sb.ToString();
using System.Text;
StringBuilder sb=new StringBuilder();
foreach(char c in cc)
{
sb.Append(c);
}
string s=sb.ToString();
5.byte[] 与 string
byte[] bb=Encoding.UTF8.GetBytes(ss);
string s=Encoding.UTF8.GetString(bb);
byte[] bb=Encoding.UTF8.GetBytes(ss);
string s=Encoding.UTF8.GetString(bb);
C# byte[]与char[]、string与char[]、byte[] 与 string 互转
原文：http://www.cnblogs.com/longhao510/p/4781048.html