Select series to plot - dynamic "ValueBinding"

[Marcin]

I have an object with some properties, such as:

public class Result
{
    public DateTime Date { get; set; }
    public Double Temperature { get; set; }
    public Double Humidity { get; set; }
}

 

I would like to have possibility to dynamically change series which I plot at the chart.

Eg. to have ComboBox with string items: "Temperature" and "Humidity" with binding SelectedItems={Binding SelectedSeriesName}
In ViewModel property "SelectedSeriesName"
In chart
<telerik:StepLineSeries ItemsSource="{Binding Results}" ValueBinding="{Binding SelectedSeriesName}" CategoryBinding="Date"/>

of course that is not possible due to ValueBinding must be string.

How can I make this scenario corect?

[Martin Ivanov]

Hello Marcin,

Actually, the ValueBinding property is of type DataPointBinding. You can define it in XAML as string because it supports string to DataPointBinding type conversion. To achieve your requirement you can use an IValueConverter that converts the SelectedSeriesName to DataPointBinding. See this approach shown in the attached project. I hope that helps.

Regards,
Martin Ivanov
Progress Telerik