protected void btnImport_Click(object sender, EventArgs e)
    {
        String cAppDir  = Server.MapPath("~/");
        String cFileDir = cAppDir + "Upload\\";

        if (!Directory.Exists(cFileDir))
        {
            Directory.CreateDirectory(cFileDir);
        }
        cFileDir = cAppDir + "Upload\\temp\\";
        if (!Directory.Exists(cFileDir))
        {
            Directory.CreateDirectory(cFileDir);
        }
        String cFileName = cFileDir + "import.dat";

        if (File.Exists(cFileName))
        {
            File.Delete(cFileName);
        }
        String cFileText = null;
        int    iCode     = 0;

        try
        {
            this.Upload.PostedFile.SaveAs(cFileName);
            cFileText = FileLib.ReadTextFile(cFileName);
            List <ExportObject> rows = PackUtil.Explain(cFileText);
            iCode = PackUtil.UpdateDB(rows, cAppDir);
        }
        catch (Exception ex)
        {
        }
    }