Loading a client file into BLOB with RTC Client

For some time have been looking for a solution on how to upload a file into BLOB with RTC Client.  The built in functions, UPLOAD and UPLOADINTOSTREAM both force an Open Dialog unless you first copy the file to a temporary path.  I already had the file name and wanted to skip that part.

I always stopped on the fact that I was unable to move binary data with code from the client layer to the server layer.  Then today, I finally got an idea on how to solve this.  I convert the client file to a base64 string, transfer that string to the server layer and save as a file.  Then I create a binary server file based on the base64 server file.  That file is identical to the client file and ready to be imported into BLOB on the server side.
[code htmlscript=”false”]IF ISSERVICETIER THEN BEGIN
Document.ADDTEXT(
ClientConvert.ToBase64String(
ClientFile.ReadAllBytes(ImageFileName)));
ServerBase64FileName := ThreeTireMgt.ServerTempFileName(”,”);
ServerFileStream.WRITEMODE(TRUE);
ServerFileStream.CREATE(ServerBase64FileName);
ServerFileStream.CREATEOUTSTREAM(OutStr);
Document.WRITE(OutStr);
ServerFileStream.CLOSE;

ServerDocumentFileName := ThreeTireMgt.ServerTempFileName(”,”);
ServerDocumentFile.WriteAllBytes(
ServerDocumentFileName,
ServerConvert.FromBase64String(
ServerBase64File.ReadAllText(ServerBase64FileName)));

ServerFileStream.OPEN(ServerDocumentFileName);
ServerFileStream.CREATEINSTREAM(InStr);
Image.CREATEOUTSTREAM(OutStr);
COPYSTREAM(OutStr,InStr);
ServerFileStream.CLOSE;
ServerBase64File.Delete(ServerBase64FileName);
ServerDocumentFile.Delete(ServerDocumentFileName);
END ELSE BEGIN
Image.IMPORT(ImageFileName,FALSE);
END;[/code]
This should support files upto 1.5GB in size.

ImageTest

5 Replies to “Loading a client file into BLOB with RTC Client”

  1. Hi Gunnar,

    Many thanks for your post. It helped me add the functionality in a NAV2016 system. I only had to make a few changes to the code you posted.

    Thanks again.

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