title: How to assign selected value to "Test" variable in <select> control
body: <p>I have code like</p>
  
  <pre><code>&lt;div&gt;
          &lt;%
              int Test;
  
              Test = 10;
          %&gt;
      &lt;/div&gt;
  &lt;select id="list"&gt;
      &lt;option value="30"&gt;1&lt;/option&gt;
      &lt;option value="20"&gt;2&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>i need assign value to "Test" variable while when i am changing value in <code>&lt;select&gt;</code> control.</p>