Moving Columns bug

[Theo Danzfuss]

Hi, I am experiencing weird behaviour in my GridGroupingControl when adding related grids to a record. The problems are as follows: 1) If I have no related grids on my record then the Move column works correctly. BUT As soon as I add more than one Related Grid to a record The MoveColumn Pointers (the red arrows which shows where the column will be moved next) is offset by the exact amount of Related grids that I have in my GridGrouping Control.See my attached picture. 2) When I have more than one related grid on a record and I double click on the column to resize it, it also seems as though it uses the incorrect Column index - It resizes column one to the size that column (1+#of related Grids) should have been. Can you please verify this problem and if possible give me a possible cause/solution. Regards, Theo Danzfuss

Grid_Move_Bug.zip

[stanleyj]

Hi Theo, Can you reproduce such behavior in this sample, I tried in 4.1.0.50. Best regards, Stanley

[stanleyj]

Hi Theo,

I could see the behavior when more columns are present, thanks for your pointers.

Sorry for the inconvenience caused.

Regards,
Stanley

[Theo Danzfuss]

Is there a workaround? Maybe overriding some event and manually moving the arrows (YUK!)?

When only one related grid is present it seems to work fine, but unfortunatly I have scenarios where there are +20 related grids - you can imagine the confusion...

Regards
TD

>Hi Theo,
>
>I could see the behavior when more columns are present, thanks for your pointers.
>
>Sorry for the inconvenience caused.
>
>Regards,
>Stanley

[stanleyj]

Hi Theo,

Sorry for the inconvenience.

To be precise, this issue is seen in previous versions of Grid. But this has been fixed in version 4.1.

Best regards,
Stanley

[Theo Danzfuss]

Upgrading is not an option for us right now - The application has already passed user acceptance, and no major upgrades are allowed at this stage. Could you provide us with a workaround?

TD

>Hi Theo,
>
>Sorry for the inconvenience.
>
>To be precise, this issue is seen in previous versions of Grid. But this has been fixed in version 4.1.
>
>Best regards,
>Stanley

[Administrator]

Hi Theo,

There is unfortunately no workaround possible – but you can make changes to the source code and recompile the grid.grouping.windows assembly.

We made the following two changes in our grid.grouping.windows code base to fix the problem:

Replace this method in GridDragGroupHeader.cs:

                        public Point GetRedArrowIndicatorLocation(bool inGroupDropArea, GridColumnDescriptor cd)
                        {
                                    if (inGroupDropArea)
                                    {
                                                int num = 0;
                                                if (cd != null)
                                                            num = TableDescriptor.GroupedColumns.IndexOf(cd.MappingName);
                                                int colIndex = GridGroupDropArea.Model.FieldToColIndex(num);
                                                Rectangle r = GridGroupDropArea.RangeInfoToRectangle(GridRangeInfo.Cell(GroupDropAreaRowIndex, colIndex));
                                                Point pt = grid.IsRightToLeft() ? new Point(r.Right, r.Top) : r.Location;
                                                return GridGroupDropArea.GridPointToScreen(pt);
                                    }
                                    else
                                    {
                                                if (cd != null)
                                                {
                                                            GridRangeInfo range = grid.Table.GetRangeOfHeaderColumnDescriptor(cd);
                                                            if (!range.IsEmpty)
                                                            {
                                                                        int colIndex = range.Left;
                        Rectangle r = grid.RangeInfoToRectangle(GridRangeInfo.Cell(range.Top, colIndex));
                                                                        Point pt = grid.IsRightToLeft() ? new Point(r.Right, r.Top) : r.Location;
                                                                        return grid.GridPointToScreen(pt);
                                                            }
                                                }
                                                return Point.Empty;
                                    }
                        }

Replace this method in GridTable.cs:

            internal GridRangeInfo GetRangeOfHeaderColumnDescriptor(GridColumnDescriptor column)
                        {
                                    int firstHeaderRowIndex = GetRangeOfColumnHeaderSection().Top;
                                    int resultRow;
                                    int resultCol;
                                    if (TableDescriptor.ColumnToRowColIndex(column.MappingName, out resultRow, out resultCol))
                                    {
                                                int offset;
                int d = (ParentTableDescriptor.Relations.NestedCount > 0) ? 1 : 0;
                                                if (resultCol > 0)
                                                            offset = TableDescriptor.GroupedColumns.Count + d + 1;
                                                else
                                                            offset = 1;
                                                return GridRangeInfo.Cell(firstHeaderRowIndex+resultRow, offset+resultCol);
                                    }
                                    return GridRangeInfo.Empty;
                        }

Stefan