title: multiply textbox value by label and dynamically populate the result in another textbox
body: <p>I have two textboxes and a hidden label.<br>
  Normally I do this with asp.net:</p>
  
  <p>After a user enters the number in the first <code>textboxt1</code>, then after clicking the button <code>getprice</code> the system multiply the <code>textbox1</code> value by the hidden label number and show the result in the <code>textbox2</code> and vice versa.</p>
  
  <p>But I want to achieve this same thing without using a button postback by using either jquery or angularjs.<br>
  As the user is typing the figures on the <code>textbox1</code>, the system should be multiplying that value at runtime and showing it in <code>textbox2</code> on keypress.</p>
  
  <p>I need a function to this please.</p>
  
  <p>I have tried using this jQuery... Its not working.<br>
  I want the function to have a name, so I can put on keypress on <code>textbox1</code>.</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
    $(function () {
      $("#&lt;%=Textbox.ClientID%&gt;").bind("input", function() {
        var value1 = $("#&lt;%=Textbox.ClientID%&gt;").val()
        var value2 = $("#&lt;%=HiddenTextbox2.ClientID%&gt;").val();
        $("#&lt;%=Textbox3.ClientID%&gt;").val(value1 * value2);
      });
    });
  &lt;/script&gt;
  </code></pre>