Visual Studio 2019 with a database

Hi group,

I've just installed Visual Studio 2019 and have started my first app using this. Within the program I created a database using the tools provided in Visual Studio. I now want to begin writing to the tables I've created. But I'm stumped on how to do this. Hopefully you can help.

This database is installed on my laptop and is called DATAWHOUSE. Will I need some kind of connection string to write to the data table (and to read from it and/or make changes to it in the future)?