Did you mean you displayed it in a DataGridView?
According to MSDN, a dataview "Represents a databindable, customized view of a DataTable for sorting, filtering, searching, editing, and navigation."
So to display a subset from the DataTable (located in the DataSet), you can bind the DataGridView to a DataView and set the DataView's RowFilter property.
Remember that the DataSet contains the DataTable(s) and the DataTable contains the data.