Dim dsXML As New DataSet()
            Dim fs As New FileStream(Server.MapPath("myFile.xml"), FileMode.Open, FileAccess.Read)
            Dim reader As New StreamReader(fs)
            dsXML.ReadXml(reader)  'leggi file nel dataset
            fs.Close()
            'bind the dataset to a datagrid
            Dim source As New DataView(dsXML.Tables(0))
            DataGridXML.DataSource = source
            DataGridXML.DataBind()