title: Add textbox text to new string in list each time button is pressed
body: <p>This is the code:    </p>
  
  <pre><code>private void button1_Click(object sender, EventArgs e)
      {
          List&lt;string&gt; user = new List&lt;string&gt;();
  
          user.Add(usertextBox.Text);
  </code></pre>
  
  <p>I want it where each time I press the button, whatever is in usertextBox at that point gets added to the list 'user' as a new item, so I can recall the different ones later with [1], [2], [3], etc. I also want it so the user can close the app and all the users will still be saved. I I don't know if C# does this automatically</p>
  
  <p>Even if you can only answer one of my questions that's fine. Thanks!!</p>