Thanks a lot for your quick reply!

I will try the way you suggested and there is a secondary way I would like to try – I believe right now when user scrolls, the screen may change by percentage. I may need to step in some event and make this by certain value instead.

Still, I will try your suggestion first.

Again, thank you very much!

Sorry. I just updated this topic and uploaded a new screenshot. Please take a look. Thanks.

I'm sorry for not replying during thees months. Please see screenshot below:

In above screenshot, you can see that I have four grids and I have succeeded to keep them in sync for many events, such as when you expand a parent row, all rows in the same line will be expanded(as I said the parent level data structure is same).

You might notice that the four scroll bars(pointed by RED arrows) are NOT in same size, which means they have different sizes of scroll regions. It seems to that this is only controlled by the number of visible rows. So I still have the following questions after nearly a years straggling.

1.Does Infragistics allow user to override this?

2.If you DO allow above, please kindly show me the idea.

3.If NOT, is there any suggestion according to the version(V14.2) I'm currently using.

My case is that we have 4 different structures as the second band, at the same time they have same parent structure. That's why right now we have multiple ultragrids. Thank you for the reply and any suggestions on my situation?