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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / Downloading file from ...
Small and medium business | Business Central, N...
Suggested Answer

Downloading file from Blob Field

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Posted on by MG-04060224-0 8
I created custom table with blob field called 'certification' and card for this table. And actions for download/uploading. Both action works without any error but after downloading .pdf file, it does not open and shows error: /Failed to load PDF document./. But it worked fine with 3kb file. Is there size limit for blob field? Or should I use different approach for uploading file to my custom table?

Code for download/upload
procedure UploadFile(DocumentInStream: InStream; FileName: Text)
    var
        OStream: OutStream;
    begin
        Rec.certification.CreateOutStream(OStream);
        CopyStream(OStream, DocumentInStream);
        Modify(true);
    end;
 
    procedure DownloadFile()
    var
        IStream: InStream;
        ExportFileName: Text;
    begin
        ExportFileName := Rec.companyName + ' - ' + Format(Rec.SystemCreatedAt) + '.pdf';
        Rec.CalcFields(Rec.certification);
        If Rec.certification.HasValue then begin
            Rec.certification.CreateInStream(IStream);
            DownloadFromStream(IStream, 'Download', '', '', ExportFileName);
        end;
    end;
Categories:
Dynamics 365 Business Central
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