❔ How can I make it so an array saves changes when I turn off the program

Basically I'm making an array of strings that can be removed or added to - how can I make it so if say I add the string "Dog" to it, when I come back to the code it will still have "Dog" in it without me having to re-add it. I'm in college so I have very little knowledge of C# but I am trying to learn. I use Visual Studio Community. Thanks