C/Front, Visual Basic & BLOB-Fields

Kromozone · 2004-09-13

Community,

i'm working on a small Visual Basic Tool. The User can scan Sheets and Reports and my Tool should save them in then Navision Database via C/FRONT OCX.

On VB side, the Bitmap is saved into an Byte-Array. But how can i save this Array into an BLOB-Field on Navision side?

I can write Text and other datatypes, but i have no more idea's to save the Bitmap as BLOB.

Thank you for your Help!

Regards

Andreas Nebel
Kisling Consulting GmbH, Neckarsulm
www.kisling-consulting.de

Doomhammer · 2004-09-14

youľl need to export picture into bitmap file (BMP, single picture per record) and import it to BLOB.

here is sample code taken from Navision 3.70 - form Company info, menu button Picture

PictureExists=boolean
Picture=BLOB field in Company Information
text001=confirmation string

PictureExists := Picture.HASVALUE;
IF Picture.IMPORT('*.BMP',TRUE) = '' THEN
  EXIT;
IF PictureExists THEN
  IF NOT CONFIRM(Text001,FALSE) THEN
    EXIT;
CurrForm.SAVERECORD;

Kromozone · 2004-09-14

Thank you for your reply.

My problem was the byte-array on VB side. I only had to write the binary into an flat variable and then -> it works!

Andy

janpieter · 2004-09-15

I think the VB code should be something like this:

Dim intFF as integer
Dim intCount as integer

intFF = Freefile

Open "c:\image.bmp" for output as intFF

For intCount = 1 to UBound(ByteArray)
     Put intFF, ByteArray(intCount)
Next intCount

Close intFF

I assume the byte array has the exact content of the bmp file?

I have never worked with a byte aray though. I don't know why you chose that, think it is the same as a string isn't it?

How do you fill the byte array?

Regards Jan-Pieter

Kromozone · 2004-09-15

Here's my function. Works perfectly now.

Function MakeBinaryLargeObject(strFilename As String, varBinaryLargeObject As Variant) As Boolean
    'Erstellt BLOB-Feld aus übergebener Datei
    Dim bytBinaryLargeObject() As Byte
    
    Open App.Path & "\" & strFilename For Binary As 1
    ReDim bytBinaryLargeObject(LOF(1))
    Get 1, 1, bytBinaryLargeObject
    Close 1
    varBinaryLargeObject = bytBinaryLargeObject
    
    'Quelldatei wird gelöscht
    Kill App.Path & "\" & strFilename

End Function

As Yet I write the Content of the Bitmap-File into an Byte-Array. But if i want to put them to C/Side, it has to be a flat variant. That was all

Ravi_Thakkar · 2008-10-03

Hi,

I am also facing the same problem,

I believe you have solved your problem , if yes please help me in solving my problem also.

Thank in advance
Ravi,

garak · 2008-10-04

@Ravi_Thakkar

do you have read Kromozone's code snippes :?:

Ravi_Thakkar · 2008-10-10

Hi All,

Recentally I have got the solution for my query.
Thanks to you all. :P

C/Front, Visual Basic & BLOB-Fields

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C/Front, Visual Basic &amp; BLOB-Fields

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C/Front, Visual Basic & BLOB-Fields