CALCFIELDS and BLOB in newer NAV versions

Just wanted to put this out there.

In older NAV versions you needed CALCFIELDS on a BLOB field before HASVALUE.  Now you can ask for HASVALUE before CALCFIELDS.

Having unsaved data in a BLOB field and doing CALCFIELDS will try to get the saved data into the BLOB field.  Try a code like this:

[code]
TempBlob.INIT;
IF FileMgt.BLOBImport(TempBlob,’Image.png’) = ” THEN EXIT;
Storage.Blob := TempBlob.Blob;
MESSAGE(‘Blob has value: %1’,Storage.HASVALUE);
Storage.CALCFIELDS(Blob);
MESSAGE(‘Blob has value: %1’,Storage.HASVALUE);
[/code]

This CALCFIELDS will remove the data from the BLOB field.

Doing an INSERT or MODIFY before CALCFIELDS will fix the error, or simply remove the CALCFIELDS line.