Export product to new nocommerce

Good morning,
I move an archive of products from an e-commerce to nopCommerce.

What is the pattern to follow to store their products en masse?

I would recommend you looking at the following file \Libraries\Nop.Services\Installation\InstallationService.cs. It installs the sample data (products, categories, discounts, etc.) during npoCommerce installation. Find 'InstallData' method and the code inside "if (installSampleData) {...}" brackets. Get an idea how it works.

Then I would write a simple console application that loads data from your previous database and inserts it into your new nopCommerce database using your modified InstallationService code.

Hi,

I have installed 1.9 app for my website, now I want to upgrade to 2.4 but prior to that I want to test that on testing server. I have created setup successfully but when I am trying to export the products from 1.9 version into excel and import in 2.4 version from same excel file it is giving the following error.

Can not open the package. Package is an OLE compound document. If this is an encrypted package, please supply the password

Please let me know if it is compatible or suggest me some other way.