ASP.net et Google Vizualisation

Bonjour a tous !
J'utilise ce code-ci qui fonctionne parfaitement http://code.google.com/p/bortosky-go...on/wiki/ReadMe comme ci dessous(avec un piechart)

Code:

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           Dim gdt As New Bortosky.Google.Visualization.GoogleDataTable(Me.GetData)
            Using mem As New System.IO.MemoryStream()
                gdt.WriteJson(mem)
                mem.Position = 0
                Dim sr As New System.IO.StreamReader(mem)
                Page.ClientScript.RegisterStartupScript(Me.[GetType](), "vis", String.Format("var fundata = {0}", sr.ReadToEnd()), True)
                sr.Close()
            End Using
 
            Dim Ams_header As Web.UI.HtmlControls.HtmlHead
            Ams_header = TryCast(Me.Page.Header, Web.UI.HtmlControls.HtmlHead)
            Ams_header.InnerHtml = "<title>MarketContext Report</title> " & _
            "<script type='text/javascript' src='http://www.google.com/jsapi'></script> " & _
            "<script type='text/javascript'> " & _
            "google.load('visualization', '1', { 'packages': ['piechart'] }); " & _
            " google.setOnLoadCallback(drawChart); " & _
            "function drawChart() { " & _
            "    var data = new google.visualization.DataTable(fundata, 0.5); " & _
            "     var chart = new google.visualization.PieChart(document.getElementById('chart_div')); " & _
            "     chart.draw(data, { width: 400, height: 240, is3D: true, title: 'Test' }); " & _
            " }</script>"

pour charger depuis la table renvoye par cette fonction :

Code:

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 Private Function GetData() as DataTable
        Dim idPtypeCondition As String = ""
        Dim idCountryCondition As String = ""
        Dim StrCmd As String = ""
 
        'Country Condition
        If ddCountry.SelectedValue <> 0 Then
            idCountryCondition = " AND idCountry = " & ddCountry.SelectedValue & " "
            ddType.Enabled = True
        End If
 
 
        'PropertyType Condition
        If ddType.SelectedValue = 0 Then
            idPtypeCondition = " AND (P.idPType = 1 OR P.idPType = 2 OR P.idPType = 3 OR P.idPType = 4 OR P.idPType = 36 OR P.idPType = 38 )"
        Else
            idPtypeCondition = " AND P.idPType = " & ddType.SelectedValue & " "
        End If
 
 
        Dim Request As String = "SELECT COUNT(P.idList) as BedRoom, PT.PTypeName as Type, BL.TotalRooms as TotalRoom " & _
        "From Property as P, PropertyType as PT, BedroomList as BL " & _
        "WHERE PT.idPType = P.idPType " & _
        "AND P.idList = BL.idList " & _
        "AND idPropMarket = 2 " & _
        "AND idCRule = 1 " & _
        "AND BL.TotalRooms > 0 " & idCountryCondition & idPtypeCondition & _
        "GROUP BY PT.PTypeName, BL.TotalRooms "
 
        Dim objConn As SqlConnection = openDBConnection()
        Dim objCmd As SqlCommand = New SqlCommand(Request, objConn)
        'Force the connection to be closed
        objConn.Close()
        objConn.Open()
        Dim reader As SqlDataReader = objCmd.ExecuteReader(CommandBehavior.CloseConnection)
        Dim DataT As New DataTable
        DataT.Load(reader)
Return DataT

Le probleme c'est que je n'arrive pas avoir la legende...Pourriez vous m'aider ?
Merci a tous