Updating datatable underlying radgridview, nothing else changes.

[Mike Renwick]

Hi there,

I'm trying to update the dataset underneath a gridview by calling rgvRatings.Refresh()

I've noticed some strange behaviour: Firstly, the sort order within groups, as selected by the user doesn't always seem to persist after the refresh, and secondly, the "currentRow" can sometimes move to the next row?  Trying to solve the combination has been ... fiddly.

I've tried using LoadLayout/SaveLayout to a string, but this collapses expanded groups.  I would attempt to handle that programmatically by storing the "expanded" state, but there are "n" levels of grouping (it's basically up to the user) so this seems like a headache to achieve and test.

Is there someway I can force the grid to update the data in all of its cells without changing *anything* else about the state of the grid?

I'm using Q2 2009 SP1 btw.

Regards,

Mike

[Mike Renwick]

Uh, one additional complexity, the grid is bound to a DataView that has a filter "IsVisible='True'".  I am attempting to manually manipulate the underlying datatable, where there are basically two rows for every row in the grid, only one of which should be visible at a time.

The idea is I can find a row's "matching pair" and toggle it's "IsVisible" field value, and refresh the grid when a checkbox is checked, to show the other row.

This actually works (sometimes) when the ordering persists.

[Martin Vasilev]

Hi Mike Renwick,

Thank you for writing. I am afraid that I cannot understand your scenario very well. However, you can try to use Update method instead of Refresh to update RadGridView UI:

this.radGridView1.GridElement.Update(GridUINotifyAction.Reset);

If this does not help, please open a new support ticket and send me a small example application. This will help me better understand your scenario and provide accurate assistance.

Sincerely yours,
Martin Vasilev
the Telerik team

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