I use the following code in a webuser control and register it in an aspx page. Every thing is fine when first time page is loaded and postback also. But when asynchronous postback using ajax the charts are not rendering. help needed it just displays word chart
Dim da As New SqlDataAdapter(cmd)
Dim dtbl As New DataTable
da.Fill(dtbl)
Dim output As String
Dim strChartNode = String.Format("caption='sales by month' showBorder='0' labelDisplay='ROTATE' slantLabels='1' formatNumberScale='0' NumberPrefix='$' bgColor='FFFFFF'")
output = utils.DisplayFusionChart(strChartNode, dtbl, "", strChart, "saleschart", strWidth, strHeight)
Panel2.Controls.Clear()
Panel2.Controls.Add(New LiteralControl(output))
conn.Close()
Function DisplayFusionChart(ByVal strChartNode As String, ByVal dtbl As DataTable, ByVal strLink As String, _
ByVal strChart As String, ByVal strChartName As String, ByVal strWidth As String, ByVal strHeight As String) As String
Dim strXML As String
strXML = ""
For Each dr As DataRow In dtbl.Rows
If strLink <> "" Then
strXML += ""
Else
strXML += ""
End If
Next
strXML += ""
Return InfoSoftGlobal.FusionCharts.RenderChart(strChart, "", strXML.ToString(), strChartName, strWidth, strHeight, False, False)
End Function
