public async Task OnGetAsync()
        {
            var files = await client.GetAllFilesAsync();

            foreach (var file in files)
            {
                FileDTO fileDTO = new FileDTO();
                fileDTO.FileId       = file.FileId;
                fileDTO.Created_at   = file.Created_at;
                fileDTO.Location     = file.Location;
                fileDTO.Path         = file.Path;
                fileDTO.Type         = file.Type;
                fileDTO.Path_changed = file.Path_changed;
                ServiceReferenceClientWeb.Keyword[] keywordList = await client.GetKeywordsOfFileAsync(file.Path);

                foreach (var keyword in keywordList)
                {
                    FileKeywordDTO fkDTO      = new FileKeywordDTO();
                    KeywordDTO     keywordDTO = new KeywordDTO();
                    keywordDTO.Id       = keyword.Id;
                    keywordDTO.Kword    = keyword.Kword;
                    fkDTO.File          = fileDTO;
                    fkDTO.FileId        = fileDTO.FileId;
                    fkDTO.FIleKeywordId = keywordDTO.Id;
                    fkDTO.Keyword       = keywordDTO;
                    fileDTO.Keywords.Add(fkDTO);
                }
                if (FilterLocation == null && FilterKeyword == null)
                {
                    fileDTOList.Add(fileDTO);
                }
                else
                {
                    if (FilterLocation == null)
                    {
                        bool find = false;
                        foreach (var item in fileDTO.Keywords)
                        {
                            if (item.Keyword.Kword == FilterKeyword)
                            {
                                find = true;
                            }
                        }
                        if (find)
                        {
                            fileDTOList.Add(fileDTO);
                        }
                    }
                    else if (FilterKeyword == null)
                    {
                        if (fileDTO.Location == FilterLocation)
                        {
                            fileDTOList.Add(fileDTO);
                        }
                    }
                    else
                    {
                        bool find = false;
                        foreach (var item in fileDTO.Keywords)
                        {
                            if (item.Keyword.Kword == FilterKeyword && fileDTO.Location == FilterLocation)
                            {
                                find = true;
                            }
                        }
                        if (find)
                        {
                            fileDTOList.Add(fileDTO);
                        }
                    }
                }
                Number = fileDTOList.Count.ToString();
            }
        }