title: how can i call a method using button
body: <p>i have a simple question:i have for example </p>
  
  <pre><code>public int X(int a,int b)
  {
  }
  </code></pre>
  
  <p>now how can i call this when click button?i mean when i click the button,X() call and work,thanks for your helps</p>