Server Error in '/' Application.

The document has no pages.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.IOException: The document has no pages.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[IOException: The document has no pages.]
   iTextSharp.text.pdf.PdfPages.WritePageTree() +1759
   iTextSharp.text.pdf.PdfWriter.Close() +312
   iTextSharp.text.Document.Close() +119
   List_Subject_new.create_pdf(String section) +918
   List_Subject_new.Page_Load(Object sender, EventArgs e) +1046
   System.Web.UI.Control.OnLoad(EventArgs e) +104
   System.Web.UI.Control.LoadRecursive() +154
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4082


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0