Thanks for the quick reply Am I missing something, I have stripped the previous dynamic column generation out of the source and just concentrated on the test xml file which is delivered by our ERP system.
The purpose of this code is to test the performance of the datagrid Here is the new demo with the changes you suggested by using an ArrayCollection. Demo 2 http://www.smithkjaer.dk/flex/tst2/TestArrayCollection3.html Source 2 http://www.smithkjaer.dk/flex/tst2/srcview/index.html -- View this message in context: http://www.nabble.com/Dynamic-DataGrid-%2B-slow-horizontal-scrolling-tp14731055p14802381.html Sent from the FlexCoders mailing list archive at Nabble.com.