As I mentioned in the previous post, this is a specific custom scenario and you should add a custom logic.
For example you can add different CSS classes on every alternate merged rows. You can achieve this on client side in case there are only one merged cell on a row:
mergedRows = parseInt(
Additionally, the other way to achieve this is on server side be merging not only the cell, but the whole rows and adding a <br /> between the different items.
Please give a try and let me know how it goes.
All the best,
the Telerik team
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