protected void Upload_Click(object sender, EventArgs e)
    {
        PageErrors errors = PageErrors.getErrors(db, Page.Master);

        errors.clear();

        if (ImportFile.HasFile)
        {
            string strTmpFolder = HROne.Common.Folder.GetOrCreateSessionTempFolder(Session.SessionID).FullName;;  //Environment.GetFolderPath(Environment.SpecialFolder.InternetCache);
            string strTmpFile   = System.IO.Path.Combine(strTmpFolder, AppUtils.ServerDateTime().ToString("~yyyyMMddHHmmss_") + ImportFile.FileName);
            ImportFile.SaveAs(strTmpFile);

            ImportHitRateBasedPaymentProcess m_import = new ImportHitRateBasedPaymentProcess(dbConn, Session.SessionID, WebUtils.GetCurUser(Session).UserID);

            try
            {
                DataTable m_table = m_import.UploadToTempDatabase(strTmpFile, WebUtils.GetCurUser(Session).UserID, string.Empty);
                ImportSection.Visible = true;
                txtRemark.Text        = string.Empty;
            }
            catch (HRImportException ex)
            {
                if (m_import.errors.List.Count > 0)
                {
                    foreach (string errorString in m_import.errors.List)
                    {
                        errors.addError(errorString);
                    }
                }
                else
                {
                    errors.addError(ex.Message);
                }
                m_import.ClearTempTable();
            }
            System.IO.File.Delete(strTmpFile);
        }
        else
        {
            errors.addError(HROne.Translation.PageErrorMessage.ERROR_INVALID_FILE);
        }
    }