Devart Forums

In version 7.5.13 the long text field is interpreted as variant array of byte instead of text.
Long text in Firebird database are stored in field of type BLOB SUB_TYPE TEXT.
And if I write CUSTOMER['NOTES'], it was treated as string (if it is not null).
But in last update of UniDAC it was changed and now it is treated as variant array of byte.
All constructions like:

if CUSTOMER['NOTES'] <> NULL then
MyMessage = 'Customer notes: ' + CUSTOMER['NOTES'];

generate execution error.

Could you fix it?

Unfortunately, we haven't been able to reproduce the issue.
Please compose and send us via the contact form on our website: https://devart.com/company/contactform.html a small sample demonstrating the described behavior and the difference in behavior between UniDAC 7.5.13 and the previos version of UniDAC, along with scripts for creating and populating database objects.

I have a similar problem in version 7.5.13, if the BLOB field is NULL, then AsVariant returns an empty string value instead of null.

Please specify what value is set in the Options.CacheBlobs property.

I have a similar problem . When Blobfield is null the .Asstring does not return an empty string ('') but it returns null

As indicated earlier, unfortunately, we haven't been able to reproduce the issue.
To understand the cause of the issue and find a solution to fix it, we need a test sample in which the issue is stably reproduced. As soon as we get such an sample and if the cause of the issue is in the code of our product, we will try to fix it as soon as possible.
Therefore, the only way to solve it, compose and send us via the contact form on our website: https://devart.com/company/contactform.html a small sample demonstrating the described behavior and the difference in behavior between UniDAC 7.5.13 and the previos version of UniDAC, along with scripts for creating and populating database objects.