I want to merge many a PDF file to a PDF file-but can not successlully

I want to merge many a PDF file to a PDF file,I have a program(user c#) which uses Aspose to concatenate pdf files:

PdfFileEditor pdfEditor = new PdfFileEditor();
FileStream outputStream = new FileStream("output.pdf", FileMode.Create);
FileStream[] inputStreams = new FileStream[2];
inputStreams[0] = new FileStream("input1.pdf", FileMode.Open);
inputStreams[1] = new FileStream("input2.pdf", FileMode.Open);
pdfEditor.Concatenate(inputStreams, outputStream);

but when running display an error: type "System. Web. HttpResponse" defined without the referenced assemblies. Must be added to the assembly "System. Web, Version = 2.0.0.0 , Culture = neutral, PublicKeyToken = b03f5f7f11d50a3a" reference

If I use the following code, run successfully, but concatenate speed is slow
PdfFileEditor pfe = new PdfFileEditor();
Boolean code = pfe.Concatenate("C:\\1.pdf","C:\\2.pdf","C:\\MergedPDF.pdf");

Hi there,


Thanks for your inquiry. I have tested the scenario with sample files using Aspose.Pdf for .NET 10.4.0 over Win 7 64 bit and unable to notice the reported issue. Please download and try latest version of Aspose.Pdf for .NET, it will resolve the issue. If issue persist then please share your sample files and environment details here, so we will look into it and will guide you accordingly.

We are sorry for the inconvenience caused.

Best Regard,