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Posted: **Fri 21 Aug 2015 07:14**

I am using UniDac 5.5.12 in Delphi XE7. I am connecting to a Firebird 2.5 database.

I rarely use readonly queries but this must have worked at one stage. I currently get an error when I run the following bit of code.

Code: Select all

  
   qryItems.disablecontrols;
   qryItems.close;
   with qryItems do
      begin
         sql.clear;
         sql.add('SELECT * FROM ITEMTBL');
         sql.add('WHERE ITEM_NUMBER=' + AddQuotes(stItem));
         readonly := true;
         open;
      end;
   qryItems.enablecontrols;

The error is - "cannot modify a readonly dataset". I am not trying to modify anything. If I make the readonly:=false, it all works ok.

Any suggestions?

Posted: **Fri 21 Aug 2015 08:38**

Unfortunately we can't reproduce the problem. To investigate this behavior of UniDAC, please compose a small sample demonstrating the problem and send it to viktorv*devart*com, including a script for creation and filling in the test database object.

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