No matter what, 600 is a lot. How many columns are we talking about?
By making the DG wider and clipping it in a container you will be taking a much larger startup hit as you make all columns, even the ones that aren't visible. A lightweight renderer should be at least twice as fast as the one you have based on Image. Feel free to post a test case if you can make a small one. ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Kyle Neath Sent: Tuesday, September 11, 2007 11:49 AM To: [email protected] Subject: Re: [flexcoders] DataGrid: Horizontal Scrolling very slow Hey Alex, As mentioned -- I did try that (using the code from your blog), even using a labelFunction instead of dynamically detecting the on/off: it was still about the same speed. The performance hit is somewhere else deep inside DataGrid. I've spent many hours researching performance of my DataGrid as a whole, but at the end of the day I don't know enough of Flex internals to debug it. Just seems no one has really tried to stretch DataGrid as far as I wanted it to go :) I did have luck with my alternate method... I've just moved the scroll bar to the left, and now I'm scrolling the container itself. It might be a nice feature to think about for future versions of Flex to toggle scrolling to dynamically generating renderers vs scrolling a clipped area. -Kyle
