title: function not working OnClientUploadStart="UploadStart"?
body: <p>Hi all i am working on ajax fileupload here everything is working right but the 
  function not working </p>
  
  <pre><code>OnClientUploadStart="UploadStart"
  </code></pre>
  
  <p>I don't know what I am doing wrong here, could you please check and please help
  to work on it? Thanks in advance.</p>
  
  <p>Here is my code, please check: </p>
  
  <pre><code>&lt;div&gt;
       &lt;asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"&gt;&lt;/asp:ToolkitScriptManager&gt;
  
    &lt;asp:AjaxFileUpload ID="AjaxFileUpload1"    AllowedFileTypes="pdf"   
     MaximumNumberOfFiles="10" OnClientUploadStart="UploadStart" runat="server"/&gt;
      &lt;/div&gt;
  </code></pre>
  
  <p>Here I am calling the function but it's not firing please check what i am doing wrong here:</p>
  
  <pre><code>&lt;script language="javascript"&gt;
          function UploadStart(sender, args) {
              alert("Started:" + args.get_fileName());
              return false;
          }
  
  
      &lt;/script&gt;
  </code></pre>
  
  <p>Thanks in advance.</p>