连接两个路径字符串

        /// <summary>
        /// 一个字符串在另一个字符串中出现的次数
        /// </summary>
        /// <param name="str">字符串</param>
        /// <param name="substring">子字符串</param>
        /// <returns>出现的次数</returns>
        private int SubStringCount(string str, string substring)
        {
            if (str.Contains(substring))
            {
                string strReplaced = str.Replace(substring, "");
                return (str.Length - strReplaced.Length) / substring.Length;
            }
            return 0;
        }
        /// <summary>
        /// 连接两个路径字符串
        /// </summary>
        /// <param name="path1"></param>
        /// <param name="path2"></param>
        /// <returns></returns>
        private string ConncetPath(string path1, string path2)
        {
            path1 = path1.Replace("/", "\\");
            path2 = path2.Replace("/", "\\");
            string[] path1z = path1.Split('\\');
            int n = SubStringCount(path2, "..\\");
            string result = "";
            for (int i = 0; i < path1z.Length - n; i++)
            {
                result += path1z[i] + "\\";
            }
            result += path2.Replace("..\\", "");
            return result;
        }