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Can you give me more direction because I have searched in the Delphi help but couldn't find a start for a solution. I have checked the code and found that I do not assign in the code a table.mastersource to a datasource.dataset with the concerning table as value.

I will provide some aditional information. I have created a datamodule with an Devart TIBCConnection and TIBCTransaction. On this datamodule there are some TIBCTable and TIBCDatasource components. I have checked all the TIBCTable components on the datamodule. None of the TIBCTable.Mastersource...

Can someone help me? I'm getting the error 'Circular Datalinks are not allowed' and I cannot find using de debug mode (F7) were to find the error. Is there an function in Delphi to figure out where I have make a mistake?

Dear DjangMan, I have put your codesample to the onClick event of DBNavigator and it worked. Now I have to find out where to put it so that the sum is calculated when the form is displayed and the DBNavigator bar isn't clicked. I still have to learn a lot. Thanx very much.

Thanx for your quick and clear reply. Can I use your code example in a calculated field or should I use it in another event?

Thanx for your reply. I am a newbie with Delphi so will you please explain what you mean with "sweep through the details to total the amounts". Also "run a forwardonly query"? I use for now paradox tables. But want to have the possibility to switch to MySQL database without changing a lot of...

Hi, I am new to this forum. I hope that you can help me with a problem. I have created order, orderitem, customer and product tables. The tables have appropriate indexes so that I can link the keyfields. On a Delphi form I want to show a bill with the orderitems in a dbgrid and in a seperate...