[MFC]如何将数据保存为CSV格式

BOOL WriteCsv(CString strText)
{
    CString strPath;
    strPath.Format(_T("D:\\CSV"));

    if (!CFileSystemHelper::IsDirectoryExist(strPath))//判断目录存不存在
    {
        CFileSystemHelper::CreateDirectory(strPath); //可创建递归目录
    }

    CString strFileNameTimeStamp= _T("%4d%2d%2d");//年月日
    SYSTEMTIME time;
    ::GetLocalTime(&time);

    CString strFileNameDateTime, strLogFilePath;
    strFileNameDateTime.Format(strFileNameTimeStamp, time.wYear, time.wMonth, time.wDay);
    strFileNameDateTime.Replace(' ', '0');
    strLogFilePath.Format(_T("%s\\%s.csv"), strPath, strFileNameDateTime);//文件名可定义，这里以时间作为文件名

    CString strData=_T("");
    CString strTitle = _T("");
    CFileFind find;
    if (!find.FindFile(strLogFilePath))//文件存在就不用再创建表头
    {
        strTitle+=_T("日期时间,");

        strTitle+=_T("Data,");

        strTitle+=_T("\n");
    }

    CTime tm = CTime::GetCurrentTime();
    CString strTime = _T("");
    strTime = tm.Format(_T("%Y-%m-%d %H:%M:%S"));
    strData += strTime;
    strData+=_T(",");//以逗号分隔数据

    strData+=strText;
    strData+=_T(",");

    strData+=_T("\n");

    CStdioFile file;
    char *oldLocale = NULL;
    if (file.Open(strLogFilePath, CFile::modeCreate|CFile::modeNoTruncate|CFile::modeReadWrite))
    {
        oldLocale = _strdup(setlocale(LC_CTYPE,NULL));
        setlocale(LC_CTYPE,"chs");

        file.SeekToEnd();    
        if (strTitle.GetLength() > 0)
        {
            file.WriteString(strTitle);
        }
        file.WriteString(strData);

        setlocale(LC_CTYPE,oldLocale);
        free(oldLocale);
        file.Close();
    }
    else
    {
        return FALSE;
    }

    return TRUE;
}