如何正确过滤数据表（datatable.select）

Dim dt As New DataTable
Dim da As New SqlDataAdapter(s, c)

        c.Open()
        If Not IsNothing(da) Then
            da.Fill(dt)
            dt.Select("GroupingID = 0")
        End If

        GridView1.DataSource = dt
        GridView1.DataBind()
        c.Close()
Dim dt As New DataTable
Dim da As New SqlDataAd