Thank you for writing.
RadGridView is using UI Virtualization
. This means that the RowElements (the actual row visual part) are created only for the currently visible rows. When you are scrolling these elements are reused and only their value is changed (at this point the SetContentCore method is called and this allows you to updated the current cell value). This functionality cannot be disabled and you cannot add row elements manually. I would advise you to check your code carefully and make sure that the chart is properly updated in the SetContentCore method (clear all series and add new ones). In addition, make sure that the IsCompatible method is overridden as well. If you cannot determine what is causing this behavior consider opening a support thread where you can attach your project. This will allow us to examine your exact case and provide you with a solution.
I hope this will be useful.
Telerik by Progress
Check out the Windows Forms project converter, which aids the conversion process from standard Windows Forms applications written in C# or VB to Telerik UI for WinForms.For more information check out this blog post
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