Virtual GridListControl in a grid

[Administrator]

I have a GridListControl cell in a grid.
I'm binding the combo to a DataTable that contains 200K items (don't ask me way ;-))

The first appearance of the dropdown list is very slow, so I'm trying to handle it in virtual mode, via the the usual QueryCellInfo/QueryColCount/QueryRowCount events, getting at the embedded grid via grid.CurrentCell.Renderer, but so far I had only so much success.

I can't get the dropdown to appear unless I bind a dummy DataTable to the cell and I can't get the selected item into the cell unless I copy it by myself in the CurrentCellCloseDropDown event.

Also I don't have any idea of how I could make the AutoComplete feature to work.

Could you please help?
Thanks.
Raul

[Administrator]

Hi Raul,

Virtual Grid doesn't store any cell style properties. You have to provide such properties on demand through Model.QueryCellInfo. To update Cell Value for the cells to table, you can have a hashtable to maintain the CellValue for each cell. You can provide the CellValue in Model.QueryCellInfo and if edited/selected by users, you can store this in Model.SaveCellInfo.

Here is a sample.
http://www.syncfusion.com/Support/user/uploads/Modified_incidentDrop_9ca3ace0.zip

If this does not explain this issue, can you send us a sample for showing this issue. We will try to debug the issue here.

Best Regards,
Haneef

[Administrator]

Yes, but I don't want to handle the _grid_ in virtual data mode.
It is the _combo_ that should have the data handled virtually. I'm doing that because binding a datatable containing 200K lines to the combo takes too long.
I attached a project that shows what problems I am having with it:
1) I can't get the selected item from the combo into the grid cell
2) I can't make AutoComplete work for the cell that contains the combo.

VirtualCombo.zip