Itextsharp - New Pdf File Opens In Next Tab In Visual Studio, Same Pdf File Opens in IIS

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Hello,

I have an asp.net 3.5 web application using itextsharp (coded in C#) to create a pdf file in the browser. The form allows the user to select a document from a dropdown list which is then outptut as a pdf file in a tab. Another request for a different document opens another new pdf file in a new (different) tab. This works using Visual Studio 2010 but, on the server (IIS 7.0.6), the same document opens in the new tab, no matter which new document is selected.

A snippet of the code:

XML

_DeLetterDocument.Close();
Response.Clear();
Response.Write("<script>");
// The following line did not make a difference:
Response.Cache.SetCacheability(HttpCacheability.NoCache);
// opens PDF in next new tab:
Response.Write("window.open('Pdf/DELetterDoc.pdf');");
Response.Write("</script>");

What am I missing?
Any help is greatly appreciated.
Roman

Posted 6-Feb-13 4:39am

R CodeProject F

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Sergey Alexandrovich Kryukov 6-Feb-13 11:08am

Where is your content type?
—SA

1 solution

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R CodeProject F · Answer 1 · 2013-02-06T06:58:00

I found and succesfully tested the following code on IIS 7 (a different Pdf file is opened each time I choose a different document). However I am not sure how to generate the Pdf file into a new tab each time a new document is requested. I prefer a new tab instead of having the Pdf file open in the same window as the form. Any ideas? (Thank you in advance.)

To avoid the original problem on IIS, MemoryStream was used:

C#

_DocMemoryStream = new MemoryStream();
_Document = new Document(PageSize.A4, 1, 1, 10, 10);
 _PdfWriter = PdfWriter.GetInstance(_Document, _DocMemoryStream);
_Document.Open();

// Update _Document content here...

Response.Clear();
Response.ContentType = "application/pdf";
_DeLetterDocument.Close();
//Write the document to the response stream:
_PdfWriter.Flush();
Response.OutputStream.Write(_DocMemoryStream.GetBuffer(), 0, _DocMemoryStream.GetBuffer().Length);
Response.OutputStream.Flush();
Response.OutputStream.Close();
Response.End();