List Index Out of Bounds

VCL TMS VCL UI Pack
1

Hi,


I got this error in the current version of TAdvStringGrid (7.0.0.0) and the previous version.  This error happens when I do the following.

Load list from DB (605 records)
Filter the list using NarrowDown (value was a 6 character string) from OnSearchEditChange
Delete a row from the filtered list.
Close the form.

In on FormClose, I have Grid.RemoveAllFilters which then triggered the error.

I traced the offending source line to AdvGrid.pas line 18680 in the function UnHideRowList.
Somehow, the variable "j" has become -1 and the List Index Out of Bounds error occurs.

I am using Delphi 2009 Enterprise on Windows 8 Professional.

Regards
Jeff


2

Sorry, the version for TAdvStringGrid is 7.2.0.0 and the version for TMS Component Pack is 7.0.0.0


/jeffc
3

Thanks for reporting. We traced & solved this issue. Next update will address this.

4

Hi Bruno,


I installed TMS Component Pack 7.0.1.0 and tested the TAdvStringGrid (7.2.1.0) with my problem. The listindex error does not show up but I think the changes has mixed up the grid rows slightly. After the call to RemoveFilters, I have missing data in random rows.

This is what I did to reproduce the error.

Load records from DB (622 records)
NarrowDown to 5 rows.
Close form.
In FormClose, call RemoveFilters and dump the contents of Grid to text file

Load records from DB (622 records)
NarrowDown to 5 rows.
Delete last row.
Close Form.
In FormClose, call RemoveFilters and dump the contents of Grid to text file.

Now compare the dump contents.
I have missing data in rows 15, 22, 32, 55, 383, 425, 434,444,616.

Furthermore, the 4 rows that satisfied the NarrowDown after the RemoveRows are no longer in the same
place ( I had the sql query sort alphabetically prior to loading to the grid) and the same  4 rows are repeated
at the end of the grid.

I can send you a copy of my dump files if you need.

Regards
jeffc



5

It is not supported to remove rows from a filtered grid. It can indeed cause erratic behavior. If you want to remove rows, please first undo the filtering, remove the row and then reapply the filtering.

6

Hi Bruno,


Is there a function then that will give me the unfiltered row number of the currently selected row so that I can remove the filter and delete the row and reapply the filter? RealRowIndex doesn't seem to work in this case.

Thanks!
7

Hi Bruno,


Did more testing on RealRowIndex. The first call to RealRowIndex after a NarrowDown will not return the correct value. Since I am reapplying the filter after the Delete, the second time around, RealRowIndex will then return the correct value.