title: Referencing Windows Form elements in other classes
body: <p>I'm very new to Windows Form programming, and I'm coming across a problem.</p>
  
  <p>I have a windows form, <code>Form1</code>, with a textbox: <code>tbx_Log</code>.</p>
  
  <p>In another class in the same project, I want to write something to the log textbox, but I cannot reference tbx_Log in that class. How can I achieve this? </p>