Need inputs for logic for Codebehind in Infopath Button

I have an infopath form,when i click on the button it should redirect to sharepoint list item's add item template.. in the code behined i gave

 try
 {
  string url = "Sharepoint List item's URL";
  HttpContext.Current.Response.Redirect("url");
  }
  catch
  {
  }

But i am getting Security error like this

System.Security.SecurityException Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. at Activity_Profile.FormCode.btnNewReportingUnit_Clicked(Object sender, ClickedEventArgs e) at Microsoft.Office.InfoPath.Internal.ButtonEventHost.OnButtonClick(DocActionEvent pEvent) at Microsoft.Office.Interop.InfoPath.SemiTrust._ButtonEventSink_SinkHelper.OnClick(DocActionEvent pEvent)

Please help me on this :)

Try the following:

• Try using HttpContext.Current.Response.Redirect("url", false);
• Make sure you reference System.Web and add an imports statement for it
• Check that your form security is set to Full trust

I'm thinking this has to do with the form not having full trust and hence not being allowed to redirect anywhere.