you can reference it like this (I'm assuming it's a datatable you are trying
to refer to)
int i = DataSetName.Tables[TableIndex].Rows.Count -1;
Now you know the index of the last record...so you can essentially use the
same logic to hit the row:
DataSetName.Tables[TableIndex].Rows;
If you are trying to do it visually, use the same logic but set the
BindingContext's position to i instead of the Table's Rows to i.