使用ABCPDF在内存中生成文档，而不是保存在物理驱动器上

Question

I was looking into example of ABCPDF using: Examples of ABC PDF

The problem is: It always saves the document on the physical drive. Is there any way to generate PDF document in memory and use content disposition to render the document

Thank you

Answer 1

Looks like the Save() function is able to take a Stream . Make a new MemoryStream and save it to that.

http://www.websupergoo.com/helppdfnet/source/5-abcpdf/doc/1-methods/save.htm

Also, Attachment takes a Stream .

So:

Attachment data = new Attachment(yourMemoryStream, MediaTypesNames.Application.Pdf);
ContentDisposition disposition = data.ContentDisposition;

Answer 2

Use Doc.GetData to get the PDF as an array of bytes. If this type of raw data is what you want then this will be more efficient than using a MemoryStream.

Answer 3

You can pass your PDF to a stream using the GetData() function in ABCPDF. Then write the bytes out to the browser with the appropriate header information.

Dim pdfbytestream as Byte() = oPDF.GetData()
oPDF.Dispose() 'free up unused object

Dim myRandomID As String = Year(Now()).ToString + Month(Now()).ToString + Day(Now()).ToString + Hour(Now()).ToString + Minute(Now()).ToString + Second(Now()).ToString

'Write it out to the browser.  
Response.ClearHeaders()
Response.ClearContent()
Response.ContentType = "application/pdf"
If pdfbytestream Is Nothing Then Response.AddHeader("content-length", 0) Else Response.AddHeader("content-length", pdfbytestream.Length.ToString())
Response.AddHeader("content-disposition", "inline; filename=" & myRandomID & ".pdf?" & Now.Millisecond)
Response.BinaryWrite(pdfbytestream)