title: How to solve error operator '-' cannot be applied to operands of type 'float' and 'string'
body: <p>How to solve error</p>
  
  <blockquote>
    <p>Operator '-' cannot be applied to operands of type 'float' and 'string' </p>
  </blockquote>
  
  <pre><code>textBox5.Text = (float.Parse(textBox3.Text) - float.Parse(textBox4.Text).ToString());
  </code></pre>