Submitted for your approval an UltraWebGrid with CellClickActionDefault=”RowSelect” and SelectTypeRowDefault=”Single” – an ordinary down-to-earth grid. It also posses event handler AfterSelectChangeHandler, also nothing out of the ordinary. But in a minute the aforementioned grid will exhibit properties most unusual. As the alert message ahead reads: Infragistics Bug.
Traveling through another dimension looking at Infragistics JS library that handles mouse events I found that in igtbl_cellMouseMove function selection occurs if grid’s attribute mouseDown is set to 1. Wild guess – it is used for drag-selection, but this ain’t the case and the attribute shouldn’t be set. So the solution: unset it. At the end of your AfterSelectChangeHandler handler insert:
and enjoy the happy end.
This issue was found in Infragistics NetAdvantage for ASP.NET 2011.1.2097, it probably exists in other versions.