Fully access a control from another Form
<p>I have a main Windows Form (<code>From1</code>) which has a <code>TextBox</code> in it. I've also created another Windows Form (<code>FindReplaceForm</code>) which I'm going to use for implementing a form of find and replace dialog. I need to fully access all the properties and methods of my textbox in From1 from <code>FindReplaceForm</code> window.</p>

<p>Although I set the Modifiers property of my <code>TextBox</code> to <code>Public</code>, in <code>FindReplaceForm</code> window I can't access the text in it.
<a href="https://i.stack.imgur.com/6Rd0Z.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6Rd0Z.png" alt="enter image description here"></a></p>