XLS is a native Excel file format. Otherwise, export the data as a CSV file format. Login to your Gmail account, and then click the "Contacts" option in the top menu to open your Gmail contacts.

BR><BR>I checked it out and it seems that depending on where your mouse cursor is, i.e. in what underlying html table you are over, the export to excel option ... producing any data that shouldn ...

Learn how to use the ClosedXML NuGet package to export data as a CSV or XLSX file for Excel from an ASP.NET Core application. When building web applications, you will often need to import or ...