Will you clarify what do you mean by "I need to display the count of rows at the bottom of the grid"?
Do you want to embed this in the default template of your custom grid with a single element which will display the item count or maybe I am missing something? Generally you may get the number of items as shown below:
You may also define aggregates - in our online documentation you will find a detailed information on this topic, following this link.
the Telerik team
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