title: Asp button doesn't trigger function
body: <p>I have a signup page for my project, and here is the part that doesn't work for me:</p>
  <pre><code>&lt;input type=&quot;email&quot; id=&quot;email&quot; title=&quot;invalid email!&quot; runat=&quot;server&quot; placeholder=&quot;email&quot; /&gt;
  &lt;input type=&quot;text&quot; id=&quot;username&quot; runat=&quot;server&quot; placeholder=&quot;username &quot; /&gt;
  &lt;input type=&quot;password&quot; title=&quot;Password needs to contain at least one big letter and digits&quot; pattern=&quot;^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[a-zA-Z]).{8,}$&quot; id=&quot;password&quot; runat=&quot;server&quot; placeholder=&quot;password&quot; /&gt;
  &lt;input type=&quot;text&quot; id=&quot;phone&quot; title=&quot;invalid phone!&quot; pattern=&quot;^\s*(?:\+?(\d{1,3}))?([-. (]*(\d{3})[-. )]*)?((\d{3})[-. ]*(\d{2,4})(?:[-.x ]*(\d+))?)\s*$&quot; runat=&quot;server&quot; placeholder=&quot;phone number&quot; /&gt;
  &lt;asp:Button runat=&quot;server&quot; ID=&quot;signUpBotton&quot; OnClick=&quot;signUp&quot; Text=&quot;sign up&quot;/&gt; 
  </code></pre>
  <p>I have the sign up part in the code behind, but the <code>asp:button</code> doesn't even trigger the function and it doesn't work.</p>