Thank you for contacting us.
Could you please send us your code declaration and the related code behind in order to observe the issue further? A possible solution is to change the page size on PreRender
event handler and then rebind the grids. For your convenience I prepared a small sample and attached it to this thread. By selecting an item in the DropDownList
control you will display one of the grid or both of them and also will change their page size.
Please give it a try and let me know if I could provide you any further assistance.
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