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ASP.net Error "That assembly does not allow partially trusted callers"

Posted on 2012-04-04
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Last Modified: 2012-06-27
The error i get is "System.Security.SecurityException: That assembly does not allow partially trusted callers"

The Code Is as follows

 Dim doc As Document = New Document
        Dim PDFMemoryStream As MemoryStream = New MemoryStream()
        'PdfWriter.GetInstance(doc, New FileStream(Request.PhysicalApplicationPath + "\1.pdf", FileMode.Create))
        Dim MyPdfWriter = PdfWriter.GetInstance(doc, PDFMemoryStream)
        MyPdfWriter.CloseStream = False

        doc.Open()
        doc.Add(New Paragraph("This Is A Test"))
        doc.Close()

        PDFMemoryStream.Position = 0

        Dim bytes As Byte() = PDFMemoryStream.ToArray

        'Use the following to create on the fly without saving
        Response.Clear()
        Response.ContentType = "application/pdf"
        Response.AddHeader("Content-Disposition", "attachment;filename=\Invoice.pdf")
        Response.BinaryWrite(bytes)
        Response.Flush()
        Response.End()
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Question by:taz8020
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5 Comments
 
LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 668 total points
ID: 37805623
It looks like you are using an assembly which is not signed (the one housing PDFMemoryStream). You may have to change the security policy for .NET on your web server, but you might try this first:  http://msdn.microsoft.com/en-us/library/8skskf63.aspx
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Assisted Solution

by:Vishal Kedar
Vishal Kedar earned 668 total points
ID: 37805881
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LVL 3

Author Comment

by:taz8020
ID: 37806097
I have checked the trust level in IIS7 and its set to full(internal) any ideas?
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LVL 83

Assisted Solution

by:CodeCruiser
CodeCruiser earned 664 total points
ID: 37807666
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LVL 3

Author Closing Comment

by:taz8020
ID: 37815327
Hi Thanks all, it was the trust isssue. Iw was set to full intenal but when set to just full then it worked.
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