Can I delete the dataset that I have created?

You can only delete datasets that still have a draft status. Choose the ‘Edit’ button and select ‘Delete dataset’. 
Once you have published your dataset, you can’t delete it. You can restrict access to all (or a selection of) your files in your dataset. If this is not a sufficient solution, please contact your local DataverseNL administrator for help. The contact information per institute can be found at https://dataverse.nl/ under tab 'contact'.