title: Detect asp:FileUpload has a file using Jquery?
body: <p>I am using asp.net file upload </p>
  
  <pre><code>&lt;asp:FileUpload ID="ImageUploader" runat="server"/&gt;
  </code></pre>
  
  <p>how can i detect that asp:FileUpload has a file using Jquery?</p>
  
  <p>I am doing this </p>
  
  <pre><code>$("#ctl00_MainContentPlaceHolder_UCUpdOrgProfile1_ImageUploader").change(function (e) {
  alert("hello")
              });
  </code></pre>
  
  <p>But i dont know either file is selected or not.</p>