1 string to byte []
string str = "abcd" ;
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(str);
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2 byte[] to string
byte[] bytes = new byte[255] ;
string str = System.Text.Encoding.ASCII.GetString(bytes,0,bytes.Length);
转载于:https://www.cnblogs.com/wangdetian168/archive/2011/08/03/2126188.html