title: How to stop an ASP.NET PostBack for a button click already managed by JavaScript?
body: <p>I have a form in an ASPX page with a Save button and a separate button that hides/shows some additional information. Everything works, except I don't want the separate button to issue a postback as its functionality is already handled on the client side in JavaScript.</p>
  
  <pre><code>&lt;asp:LinkButton id="btnHide" runat="server" CssClass="blah"  CommandName="Hide" data-toggle="collapse" data-target="#dvWP"&gt;
  </code></pre>
  
  <p>What must I do so that the button above won't cause a postback?</p>