C#中一些字符串操作的常用用法

//获得汉字的区位码   byte[] array = new byte[2];   array = System.Text.Encoding.Default.GetBytes("啊"); int i1 = (short)(array[0] - ''\0'');   int i2 = (short)(array[1] - ''\0''); //unicode解码方式下的汉字码   array = System.Text.Encoding.Unicode.GetBytes("啊");   i1 = (short)(array[0] - ''\0'');   i2 = (short)(array[1] - ''\0''); //unicode反解码为汉字   string str = "4a55";   string s1 = str.Substring(0,2);   string s2 = str.Substring(2,2); int t1 = Convert.ToInt32(s1,16);   int t2 = Convert.ToInt32(s2,16); array[0] = (byte)t1;   array[1] = (byte)t2; string s = System.Text.Encoding.Unicode.GetString(array); //default方式反解码为汉字   array[0] = (byte)196;   array[1] = (byte)207;   s = System.Text.Encoding.Default.GetString(array); //取字符串长度   s = "iam方枪枪";   int len = s.Length;//will output as 6   byte[] sarr = System.Text.Encoding.Default.GetBytes(s);   len = sarr.Length;//will output as 3+3*2=9 //字符串相加   System.Text.StringBuilder sb = new System.Text.StringBuilder("");   sb.Append("i ");   sb.Append("am ");   sb.Append("方枪枪"); ///////////////////////////////////////////////////////////////////// string --> byte array byte[] data=Syste.Text.Encoding.ASCII.GetBytes(string); string --> byte byte data = Convert.ToByte(string); byte[]-->string string string = Encoding.ASCII.GetString( bytes, 0, nBytesSize );

posted on 2008-03-06 10:37  Junda.chen  阅读(120)  评论(0编辑  收藏  举报

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