[CLOSED] Charts created in code behind

[cwolcott]

I have a panel defined that will hold a chart that I will create and recreate based on user options in code behind.

<ext:Panel ID="ChartPanel" runat="server" layout="BorderLayout" >
   <Items>
   </Items>
</ext:Panel>

When creating the chart in the code behind I added it to the panel using

private void BuildChart()
   {
   ...
   Ext.Net.Chart byMonthChart = new Chart()
   { ... }
   
   ChartPanel.Items.Add(byMonthChart);
   }

But when I went to recreate the chart via BuildChart it would not update on the panel. After looking through a couple of threads I changed it to the following. Is this the correct way? I only want one chart showing in the panel? Do I need the clear or clean anything up before trying to add the chart?

private void BuildChart()
   {
   ...
   Ext.Net.Chart byMonthChart = new Chart()
   { ... }
   byMonthChart.AddTo(ChartPanel);
   //ChartPanel.Items.Add(byMonthChart);
   }

[Daniil]

Hi Chris,

Is this the correct way?

Generally, yes, you should render a Chart. An AddTo method does that.

And again yes, you should clean.

You can call

ChartPanel.RemoveAll();

or use a Replace method instead of an AddTo one.

[cwolcott]

Perfect. Please close thread.