public void LoadRankInfo()
    {
        rankInfoList.Clear();

        if (Directory.Exists(FileSystemPath + "/RankInfo") == false)
        {
            Directory.CreateDirectory(FileSystemPath + "/RankInfo");
        }

        if (File.Exists(FileSystemPath + "/RankInfo/RankInfo.List") == false)
        {
            for (int i = 0; i < 5; ++i)
            {
                ListRankStruct rankInfo = new ListRankStruct();
                rankInfo.rank  = i + 1;
                rankInfo.score = 0;
                rankInfoList.Add(rankInfo);
            }


            Save_Root("RankList");
            Save_Child("Count");
            Save_Element("RankCount", rankInfoList.Count + "");
            for (int i = 0; i < rankInfoList.Count; ++i)
            {
                Save_Child("RankInfo_" + i);
                Save_Element("rank", rankInfoList[i].rank + "");
                Save_Element("score", rankInfoList[i].score + "");
            }
            Save_File(FileSystemPath + "/RankInfo/RankInfo.List");
        }
        else
        {
            Load_File(FileSystemPath + "/RankInfo/RankInfo.List");
            Load_Nodes("RankList/Count");
            int Count = int.Parse(Load_Data("RankCount"));
            for (int i = 0; i < Count; ++i)
            {
                ListRankStruct rankInfo = new ListRankStruct();
                Load_Nodes("RankList/RankInfo_" + i);
                rankInfo.rank  = int.Parse(Load_Data("rank"));
                rankInfo.score = int.Parse(Load_Data("score"));
                rankInfoList.Add(rankInfo);
            }
        }
    }
    public void SaveRankInfo(ListRankStruct Info)
    {
        if (Directory.Exists(FileSystemPath + "/RankInfo") == false)
        {
            Directory.CreateDirectory(FileSystemPath + "/RankInfo");
        }

        LoadRankInfo();
        bool isEqual = false;

        for (int i = 0; i < rankInfoList.Count; ++i)
        {
            if (rankInfoList[i].score == Info.score)
            {
                isEqual = true;
                break;
            }
        }

        if (isEqual == false)
        {
            rankInfoList.Add(Info);
            rankInfoList.Sort(new RankSort());
            if (rankInfoList.Count > 5)
            {
                rankInfoList.Remove(rankInfoList[rankInfoList.Count - 1]);
            }
        }


        Save_Root("RankList");
        Save_Child("Count");
        Save_Element("RankCount", rankInfoList.Count + "");
        for (int i = 0; i < rankInfoList.Count; ++i)
        {
            Save_Child("RankInfo_" + i);
            rankInfoList[i].rank = i + 1;
            Save_Element("rank", rankInfoList[i].rank + "");
            Save_Element("score", rankInfoList[i].score + "");
        }
        Save_File(FileSystemPath + "/RankInfo/RankInfo.List");
    }