Cartesian PlotBand Annotation with MVVM

[Gerhard]

Hello, I would like to add a “Cartesian PlotBand Annotation” to a “CartesianChart” at runtime.
This should be done in the MVVM environment. For this I would add a list “List<CartesianPlotBandAnnotation>” as a property to my “MainViewModel”. I then fill the individual elements of this list with the corresponding data. The property “Axis” of type “CartesianAxis” must also be specified. Unfortunately, this object is not known to the “MainViewModel”. What is the solution here?

 

 

[Stenly]

Hello Gerhard,

For an MVVM approach when defining annotations for the RadCartesianChart control, you can utilize its AnnotationsProvider property:

WPF ChartView - AnnotationsProvider - Telerik UI for WPF

This way, when defining a descriptor, you can specify the Axis.

With this being said, could you give this suggestion a try?

Regards,
Stenly
Progress Telerik

[Gerhard]

Thanks for the tip, I must have overlooked something.
I would like to implement a 'PlotBand annotation' for the horizontal axis. This axis is a 'DateTimeContinuousAxis' and I use the same implementation as in the documentation. Unfortunately, the annotation is not displayed.

[Stenly]

Hello Gerhard,

I prepared a sample project to showcase how to display plot band annotations via the AnnotationsProvider property of RadCartesianChart control, where one of the axes is a DateTimeContinuousAxis. The example follows the MVVM pattern.

The application produces the following result:

With this being said would it be possible to give it a try?

[Gerhard]

The example helped me a lot.
Thank you very much.