How to remove empty row from dataset

Hi,

In my dataset an empty row is creating

i want to delete that row from my dataset, here in add button i am creating an empty row

and i want to delete that row in datagrid cancel command event.

Protected Sub btnAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Me.DGCategoryMainTypes.EditItemIndex = 0
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