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Convert Binary Data to PDF

Posted on 2016-07-19
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Last Modified: 2016-09-28
Good day all,

I have a field in a SQL table that contains binary data that I need to convert to a PDF. All recommendations are appreciated.
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Question by:EMCIT
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by:Guy Hengel [angelIII / a3]
ID: 41719533
and what is that binary data?
and do you plan to "display" the data/pdf?
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by:EMCIT
ID: 41719550
The binary is a converted PDF.  I need to convert it back to pdf to save as a .pdf.
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by:Bill Prew
ID: 41719565
What is the data type of the field that the binary data (PDF data) is stored in?

~bp
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LVL 11

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by:EMCIT
ID: 41719567
The field is varbinary(MAX)
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by:Bill Prew
ID: 41719597
Okay, what do you have so far?  Are you working in Access using VBA, or in VBScript?  Can you share the code you have that connects to the data base and does a query, etc?

~bp
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by:EMCIT
ID: 41719603
I'm building an Access front end (VB) that will connect to SQL via ODBC. A variable will be passed that will identify the record to be retrieved. The PDF (Binary) will be saved to a network location.
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Bill Prew earned 500 total points (awarded by participants)
ID: 41719628
Okay, here are a couple of examples of what you need to do I believe. The basic idea is to query the table as you would normally to get the column that has the binary data, then store that in a file using an ADO stream.  Hope these help.

See routines shared here:

https://usefulgyaan.wordpress.com/2014/09/30/store-and-fetch-files-sql-server-tables/

I also found this code snippet that is the same idea:

Dim cn  As ADODB.Connection
Dim rs  As ADODB.Recordset
Dim sql As String
Dim oStream As ADODB.Stream

Set cn = New ADODB.Connection

'Here I use default admin user 'sa' and password is blank
cn.Open "Provider = sqloledb;" & _
        "Data Source=ServerNameOrIP;" & _
        "Initial Catalog=DBName;" & _
        "User ID=sa;" & _
        "Password=;"""

'your sql statment including varbinary max field here it is FILEDATA
sql = " select EMAILID,EMAILFROM,EMAILTO,EMAILSUBJECT,FILEDATA from Tbl "


Set rs = New ADODB.Recordset

rs.Open sql, cn

Do Until rs.EOF
    Set oStream = New ADODB.Stream
    With oStream
         .Type = adTypeBinary
         .Open
         .Write rs.Fields(4).Value
         'Here I use 1st field value as file name i.e. rs.fiedls(0).value 
         'In addition you can join drive and/or folder path to save another location
         .SaveToFile rs.Fields(0).Value & ".pdf", adSaveCreateOverWrite
         .Close
    End With
    Set oStream = Nothing
    rs.MoveNext
Loop

Open in new window

~bp
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