title: RichTextBox font style button for Bold and/or Italic (how to code so more than one can be chosen instead of replacing
body: <p>Right now I am using some buttons with the following code:</p>
  
  <pre><code>richTextBox1.SelectionFont = new Font("Tahoma", 12, FontStyle.Bold);
  richTextBox1.SelectionColor = System.Drawing.Color.Red;
  </code></pre>
  
  <p>I also want to add some buttons for Bold, Italic, etc using:</p>
  
  <pre><code>richTextBox1.SelectionFont = new Font("Tahoma", 12, FontStyle.Italic);
  </code></pre>
  
  <p>But if I have a Bold option, this code will remove the Bold and add Italic. How can I retain the Bold and Italic?</p>
  
  <p>Thanks!</p>