Chart view image doesn't work correctly

Hi Mathieu,

Thank you for writing.

Your implementation of the custom LegendItemElement also needs an override of the CreateChildElements method where you would need to add the RadCheckBoxElement to the CheckBoxLegentItemElement.Children collection.

I further extended the sample code you provided. In my project, I am also using an in memory user control and the chart exports to image successfully whether all of the checkboxes are checked or not. Besides the project, I am also sending you a screenshot of the exported image.

I hope this helps. Should you have further questions please do not hesitate to write back.

Regards,
Hristo Merdjanov
Telerik