Question

Got a grid with some numeric columns and it’s need to implement for each column an aggregate (sum or count) and display it under the corresponding column.

I know that some suites (DevExpress or other) had already implemented “by default”. But there is a way to implement that using default controls or JVCL?

Answer 1

Since you have mentioned JEDI VCL, try to take a look at the TJvDBGridFooter component. It is the status bar for the TJvDBGrid control.

• you can modify the displayed text in the OnDisplayText event
• you can calculate the aggregate fields in the OnCalculate event
• you can follow the grid column scroll, resize or modify the appearence of the panels

Check the demo projects from JVCL’s ..\examples\JvUltimDBGrid folder to see it in action.