Radchart Empty Series

[GK]

Hi Telerik Team,

I am new to RadCharts, I want to set my radchart visible =false, when there are no records in it or when the radchart shows "

There is no or empty series

". 
 
waiting for your early reply.

Thanks
Gopi Krishna

[Peshito]

Hello Gk,

You could use an if statement like this:

if (radChart.Series.Count == 0)
{
    radChart.Visible = false;
}

As you are new to RadChart, you could find a lot of useful information in our help topics here or check out our demo examples here, as well.

Kind regards,
Peshito
the Telerik team

[GK]

Hi Peshito,

Thanks for your reply, But I am sorry to say, I have tried this earlier, in page_load, I am getting count=1 even if there are no records in it, I am having a couple of charts in my page, so i want to eliminate the charts if they won't have any records in it. 
Below is the aspx code which I am using for chart.

<telerik:RadChart ID="rct_XYZ" DataSourceID="sds_SummaryCard"

                DefaultType="Bar" Width="500px" AutoLayout="true" runat="server">

                <ChartTitle Appearance-FillStyle-MainColor="#220000" TextBlock-Text="....XYZ"

                    TextBlock-Appearance-TextProperties-Color="#FFBB22" />

                <Appearance FillStyle-MainColor="#220000" />

                <Legend Visible="false" />

                <Series>

                    <telerik:ChartSeries DataYColumn="Percentage" DefaultLabelValue="#Y%" Appearance-TextAppearance-TextProperties-Color="#FFBB22">

                    </telerik:ChartSeries>

                </Series>

                <PlotArea>

                    <YAxis Appearance-CustomFormat="0.00\%" Appearance-TextAppearance-TextProperties-Color="#FFBB22" />

                    <XAxis AxisLabel-Visible="true" AxisLabel-TextBlock-Text="XYZ" DataLabelsColumn="XYZ"

                        AxisLabel-TextBlock-Appearance-TextProperties-Color="#FFBB22" Appearance-TextAppearance-TextProperties-Color="#FFBB22" />

                </PlotArea>

            </telerik:RadChart>

waiting for your early reply,

Many Thanks
Gopi Krishna

[Peshito]

Hello Gk,

The reason why your count is equal to 1 is because your series is defined in the markup. This way you will always have a default series included in the RadChart1.Series.Count.

What you should do is to define the series in code behind and follow the same approach.

Kind regards,
Peshito
the Telerik team

[GK]

Hi Peshito,
 
Thanks for your reply,
I could made a workaround for this, but I was expecting something like Gridview.rows.count > 0 logic, same for RadCharts.

Rather changing my code. I am checking for data in the SQLDataSoure which i am binding to RadChart, and then making visible false if there exists no data. 

DataView dv4 = (DataView)sds_SummaryCard.Select(DataSourceSelectArguments.Empty);
           if (dv4.Table.Rows.Count == 0)
               rct_XYZ.Visible = false;

 

Thanks
Gopi Krishna