Rowfilter?

Hur skapar jag detta rowfilter så att det fungerar?

 Dim adpt As New MySqlDataAdapter(strSql, ConnectionString)
            ds = New DataSet()

            Dim myView As DataView
            myView = ds.Tables(0).DefaultView
            myView.RowFilter = "Db = 'mySql_Db1'"

            adpt.Fill(ds, "Processlist")
            dg3.DataSource = ds
            dg3.DataBind()