title: How to access Winform textbox control from another class?
body: <p>I have a <code>winform</code> called <strong><em>Form1</em></strong> and a <code>textbox</code> called <strong><em>textBox1</em></strong></p>
  
  <p>In the <strong><em>Form1</em></strong> I can set the text by typing:</p>
  
  <pre><code>textBox1.text = "change text";
  </code></pre>
  
  <p>Now I have created another class. How do I call <strong><em>textBox1</em></strong> in this class?
  so I want to change the text for <strong><em>textBox1</em></strong> in this class.</p>
  
  <p>How can I access the <strong><em>Form1</em></strong> from this new class?</p>