/// <summary> /// 数字按Step的步进递增 /// 0==>9 9==>0 /// A==>Z Z==>A /// a==>Z z==>A /// 其他字符跳过 /// </summary> /// <param name="source">源字符串</param> /// <param name="step">步进</param> /// <returns>转化后的字符串</returns> public static string IncLetterOrDigit(this String source, int step) { return(StringHelper.IncLetterOrDigit(source, step)); }