text: public static string PathToString(string[] path, int length){if (length == 0){return "";}StringBuilder sb = new StringBuilder();for (int i = 0; i < length; i++){string s = path[i];if (s.Length == 0){throw new System.ArgumentException("each path component must have length > 0 (got: \"\")");}int numChars = s.Length;for (int j = 0; j < numChars; j++){char ch = s[j];if (ch == DELIM_CHAR || ch == ESCAPE_CHAR){sb.Append(ESCAPE_CHAR);}sb.Append(ch);}sb.Append(DELIM_CHAR);}sb.Length = sb.Length - 1;return sb.ToString();}