Export ChartView without rendering.

[Grégory]

Is it possible to Export ChartView when the control is not presented in the Visual Tree. Without rendering. I know that the RadChart doesn't work.

[Grégory]

There is an example over here:
http://www.telerik.com/help/silverlight/radchart-features-export-to-pdf.html
in the chapter:
Exporting RadChart when the control is not presented in the Visual Tree.
It is working only for WPF, not for Silverlight.
What about the ChartView. Is it working for this control?

[Giuseppe]

Hello Grégory,

Unfortunately at the moment RadChartView does not support this scenario properly either but we will do our best to address this limitation for the Q1 2012 official release.


Greetings,
Giuseppe
the Telerik team

[Grégory]

That would be wonderful! Thank you.

[Grégory]

Has this feature been released?

[Nikituki]

Hello,

At http://www.telerik.com/help/silverlight/radchart-features-export-to-pdf.html has an example only for RadChart.
Is there a similar functionality for RadChartView?

[Giuseppe]

Hello there,

@Grégory -- unfortunately this functionality is not available in the Silverlight version of the control yet as we still are unable to workaround the platform limitations that prevent this scenario from working correctly there in the first place. Our developers are still looking for possible solutions but at this point we cannot commit a specific timeframe as most probably it would be misleading again.

@Nikituki -- you can use the same approach for RadChartView as well; you just need to replace this line of RadChart export-to-image code:

RadChart1.ExportToImage(ms, new PngBitmapEncoder());

with this line for RadChartView (RadChartView does not provide built-in export API like RadChart but internally RadChart uses the same extension methods):

Telerik.Windows.Media.Imaging.ExportExtensions.ExportToImage(RadChart1, ms, new PngBitmapEncoder());

Greetings,
Giuseppe
the Telerik team

[Grégory]

Is this feature in progress for Silverlight?
Is this working fine with WPF?

Thank you for your answers!

[Giuseppe]

Hello Gregory,

The same platform limitations that prevent this scenario to work correctly for RadChart for Silverlight still apply for RadChartView for Silverlight so we cannot provide any additional update on this.

As for WPF -- everything works as expected like this:

private void Button_Click(object sender, RoutedEventArgs e)
{
    this.SaveImage();
}

private void SaveImage()
{
    RadCartesianChart chart = new RadCartesianChart();

    chart.BeginInit();

    chart.Width = 600;
    chart.Height = 400;

    chart.HorizontalAxis = new CategoricalAxis();
    chart.VerticalAxis = new LinearAxis();

    BarSeries series = new BarSeries();
    series.DataPoints.Add(new CategoricalDataPoint() { Category = "C1", Value = 10 });
    series.DataPoints.Add(new CategoricalDataPoint() { Category = "C2", Value = 20 });
    series.DataPoints.Add(new CategoricalDataPoint() { Category = "C3", Value = 30 });
    series.DataPoints.Add(new CategoricalDataPoint() { Category = "C4", Value = 10 });
    series.DataPoints.Add(new CategoricalDataPoint() { Category = "C5", Value = 20 });

    chart.Series.Add(series);

    chart.EndInit();

    chart.Measure(new System.Windows.Size(chart.Width, chart.Height));
    chart.Arrange(new System.Windows.Rect(new Point(0, 0), chart.DesiredSize));

    Telerik.Windows.Media.Imaging.ExportExtensions.ExportToImage(chart, "C:\\image1.png", new PngBitmapEncoder());
}

Regards,
Giuseppe
the Telerik team

[Kevin]

What are the platform limitations?

"The same platform limitations that prevent this scenario to work correctly for RadChart for Silverlight still apply for RadChartView for Silverlight so we cannot provide any additional update on this. "

[Giuseppe]

Hello Kevin,

One of the major problems is that you cannot force the execution of ApplyTemplate(...) for custom control in Silverlight without adding it to the visual tree, hence the export-to-image functionality cannot operate correctly.


All the best,
Giuseppe
the Telerik team