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This code produces no compilation errors

Aspose.Pdf.Facades.PdfFileEditor pdfEditor = new Aspose.Pdf.Facades.PdfFileEditor();
pdfEditor.Append("input.pdf", "port.pdf", 1, 1, "output.pdf");

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Error 1 The type 'System.Web.HttpResponse' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. C:\Program Files\Aspose\Aspose.Pdf for .NET\Examples\ProgrammersGuide\WorkingWithAsposePDF\WorkingWithPages\InsertEmptyPageInPDFFile\CSharp\Program.cs 33 InsertEmptyPageInPDFFile

VS2008 NET3.5
Aspose.Pdf 9.2.0.0

Hi Huang,


Thanks for contacting support and sorry for the delayed response.

As indicated in error message, please reference System.Web.dll in your solution/application (as shown in attached image) to avoid this problem.

In case of any further query, please feel free to contact. We are sorry for this inconvenience.