title: How to add two CSS Class to control in the code behind?
body: <p>I am setting 2 css class in the code behind in ASP.NET</p>
  
  <p>I could either do:</p>
  
  <pre><code>txtBox.Attributes.Add("class", "myClass1");
  txtBox.Attributes.Add("class", "myClass2");
  </code></pre>
  
  <p>it's always apply one Class .. How can i add thw two classes ?</p>