Not able to rendering charts in an application I have upgraded from ext 1.4 to ext 4.5 but chart stopped rendering

[ayyappa]

Hi Team

I have upgraged an ext.net 1.5 application with custom chart functionality. But the chart is not getting renedered after I we have upgraded the applicatoin. Here is the custom code of the application.

Here is the sample code for chart.

   <ext:Chart
            ID="PrdDisChart"
            runat="server"
            Shadow="true"
            ColumnWidth=".5"
            Flex="1"
            Region="Center"
            Theme="Base:gradients">

            <LegendConfig Position="Right" />
            <Store>
                <ext:Store ID="storePrdDis" runat="server">
                    <Model>
                        <ext:Model ID="modelPrdDis" runat="server">
                            <Fields>
                                <ext:ModelField Name="Name" Type="String" />
                                <ext:ModelField Name="Sales" Type="Float" />
                                <ext:ModelField Name="Number" Type="Float" />
                            </Fields>
                        </ext:Model>
                    </Model>
                </ext:Store>
            </Store>

            <Series>
                <ext:PieSeries
                    AngleField="Sales"
                    ShowInLegend="true"
                    Donut="10"
                    Highlight="true"
                    HighlightSegmentMargin="10">
                    <Label Field="Name" Display="Rotate" Contrast="true" Font="11px Arial" Hidden="true" />
                    <Tips runat="server" TrackMouse="true" Width="350" Height="30">
                        <Renderer Fn="tipRenderer" />
                    </Tips>
                </ext:PieSeries>
            </Series>
        </ext:Chart>

codebehind.cs

public  void CreateGraph()
        {
            var label = string.Empty;
            var data = GetData();          
            PrdDisChart.GetStore().DataSource = data;
            PrdDisChart.DataBind();
            grdProduct.ReadData<BestSellingProductRecord>(data);
        }

GetData() is a server side code for returning the data.