using System; using System.Collections.Generic; using System.Text; namespace BLL { /// <summary> /// 系统转换类 /// 王彬 2011-09-13 /// </summary> public class SysConvert { #region 三个字符(0-9,A-Z,a-z) /// <summary> /// 三个字符自动加一,从0-9,A-Z,a-z /// 例如: Aab==SysConvert.getAdd(Aaa); /// </summary> /// <param name="word">三个字符(0-9,A-Z,a-z)</param> /// <returns>三个字符加一后的结果</returns> public static string getAdd(string word) { char[] charArray = word.ToCharArray(); string str_asciicode0 = charArray[0].ToString(); string str_asciicode1 = charArray[1].ToString(); string str_asciicode2 = charArray[2].ToString(); str_asciicode2 = SysConvert.getAddOne(str_asciicode2); //个位加一 if (str_asciicode2 == "0") { //如果个位等于z(ascii:122),则十位加一 str_asciicode1 = SysConvert.getAddOne(str_asciicode1); } if (str_asciicode1 == "0") { //如果十位等于z(ascii:122),则百位加一 str_asciicode0 = SysConvert.getAddOne(str_asciicode0); } return str_asciicode0 + str_asciicode1 + str_asciicode2; } /// <summary> /// 取得ASCII码 /// </summary> /// <param name="word">正常的数字或字母</param> /// <returns>ASCII码</returns> public static int getAscii(string word) { byte[] array = new byte[1]; array = System.Text.Encoding.ASCII.GetBytes(word); return (short)(array[0]); // int asciicode0 = (short)(array[0]); // return Convert.ToString(asciicode0); } /// <summary> /// ASCII码变换成字母或数字 /// </summary> /// <param name="asciicode">ASCII码</param> /// <returns>正常的数字或字母</returns> public static string getWord(int asciicode) { byte[] array = new byte[1]; array[0] = (byte)(asciicode); //ASCII码强制转换二进制 return Convert.ToString(System.Text.Encoding.ASCII.GetString(array)); } /// <summary> /// 自动加一,从0-9,A-Z,a-z /// </summary> /// <param name="ascii"></param> /// <returns></returns> public static string getAddOne(string word) { int ascii = SysConvert.getAscii(word); //取出ASCII码 int result = 0; //返回结果 if (ascii == 57) { //9 result = 65; } else if (ascii == 90) { //Z result = 97; } else if (ascii == 122) { //z result = 48; } else { //除了上面的任意字母或数字 result = ++ascii; } return SysConvert.getWord(result); //return Convert.ToString(result); } #endregion } }
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