I have a problem, that I want to write a Client-Application, which uploads a CSV-File with about 700 lines to a SharePoint Online-List. I just found the function to upload a single line to a SharePoint list in Microsofts Graph & SharePoint API. This works but takes forever, as I have to wait for the respond of the server, before uploading the next line. Is there an API or some way to parse and upload the CSV-File as whole into a SharePoint-Online list in order to get my Application working faster? I just can't believe, that this is the only way to handle this problem.
Best regards Chrissi
try this It updates the SharePoint List from CSV Maybe you can use similar logic.
https://sshareasolutions.com/2020/04/25/update-sharepoint-list-with-csv-file-using-jquery/