Ian, >I have a problem with a project I am working on. I have a database >table containing financial transactions: > >id account date description amount_in amount_out > >I filter the table based on things like account, date ranges etc and >then show the results in a DBGrid. The user can click on a column to >change the sort. I need to show the current balance on each row so: > >balance = previous_balance + (amount_in - amount_out) > >This isn't a big problem until the user scrolls the grid or changes >the sort field, then the balance column changes as the balance on the >previous row is wrong.
If all you want to do is display the output in the grid without the need to change the data, I would just use a TQuery and TStringGrid to display the data. Your loop that adds rows to the grid could calculate the balance any way you want. If users need to change sort order, you can write your own code to handle clicks on the top row and either sort the loaded grid or just change the ORDER BY in the SQL and reload. Glenn Lawler www.incodesystems.com
