How to Include Custom Column in Export To CSV in Magento 2

Magento 2 store owners might be familiar with the backend grids and how they can be exported to CSV files. The store admins are frequently required to export the data into CSV format for multiple purposes.

There can be custom columns in the backend grid that the admin may also want to include in the exported CSV file. However, sometimes you may face problem to include the custom column in export to the CSV file in Magento 2, which may put the store admin in a troubling situation.