saving a gridview as XML fails to prompt the user

I've got the followig:


        sName = Session("uid") & " " & Session("outType") & Date.Today.Date.ToString
        sName = Replace(sName, "/", "-")
        sName = Replace(sName, ":", "-")
        savePath = appPath + saveDir & sName & ".xml"
        Dim mFile As New FileInfo(savePath)
        If mFile.Exists Then
            mFile.Delete()
        End If

        Dim fso As New FileStream(savePath, FileMode.CreateNew)
        myDs.Tables.Add(Sessi ...