public void ClearProperties()
{
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_IS_FIRST_LAUNCH, this);
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_USER_ID, this);
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_USER_NAME, this);
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_ROLE_CODE, this);
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_POSITION_CODE, this);
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_IS_LOGIN_AS, this);
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_PRODUCT_CODE, this);
ExcelUtils.DeleteProperty(CUSTOM_PROPERTY_SU_CODE, this);
}