Data scrolling problem

I have an application that displays a thumbnail image inside a cell in a DataGrid control.  Not every line must include a thumbnail but can.  If you have a few enough items in the datagrid so that scrolling is not necessary that you add 2 thumbnails at the top of the DataGrid that imposes the use of the scroll bar in the DataGrid then if you try to scroll it pops up.  As far as I know what is happening is when these two first lines are no longer visible in the datagrid control, the image is rendered more which allows line to return to normal, which in turn makes the still visible lines which, in turn, requires the use of the scroll bar height. Video of the occurrence of the problem can be seen below.  When the images are red and the mouse cursor is positioned on the DataGrid I am usign the scroll wheel.

You can find the project here: day2daydevelopment.com/code/ImageInDataGrid.fxp

Any ideas on what is happening and how to fix it?

Hello

Thank you provide video and the sample project, he made it clear the problem much easier.  I think the problem you are having has to do with recycling point converters.  I checked this problem using your application in a web browser which lead me to the flex forums.  I found this post that looks like:

DataGrid with variableRowHeight does not scroll properly

From there on, I also found Alex Harui blog post: MX DataGrid, list, and VariableRowHeight

Hope this helps,

Chris

Tags: Adobe AIR

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