best way to do connection and GetData

 Public Shared Function GetData(Query As String) As DataTable
        Try

            Dim connString As String = WebConfigurationManager.ConnectionStrings("myConnectionString").ToString


            Using con As New SqlConnection(connString)
                Using cmd As New SqlCommand()
                    cmd.CommandText = Query
                    Using sda As New SqlDataAdapter()
                        cmd.Connection = con
                        sda.SelectCommand = cmd
                        Using ds As New DataSet()
                            Dim dt As New DataTable()
                            sda.Fill(dt)
                            Return dt
                        End Using
                    End Using
                End Using
            End Using



        Catch ex As Exception
            Return Nothing
        End Try
    End Function