Implement a Legend Control in Unbound Mode

The RadLegendControl allows a complete customization of the legend items. If you don’t want the content of the legend to be bound to a chart, then you can specify the items explicitly by adding LegendItem items to the LegendItems collection.

Example

Examples 1 and 2 show to implement a RadLegendControl for a BarSeries, where each legend item is defined independently of the chart.

Example 1: Defining the model and viewmodel

public class CustomPoint 
{ 
    public double Value { get; set; } 
 
    public string Category { get; set; } 
} 
 
public class ViewModel 
{ 
    public ViewModel() 
    { 
        this.SeriesData = new List<CustomPoint>() 
        { 
            new CustomPoint { Category = "Dogs", Value = 10 }, 
            new CustomPoint { Category = "Cats", Value = 14 }, 
            new CustomPoint { Category = "Birds", Value = 5 }, 
        }; 
    } 
 
    public List<CustomPoint> SeriesData { get; set; } 
} 

Example 2: Defining the RadCartesianChart and RadLegendControl

 <Grid xmlns:telerikChart="using:Telerik.UI.Xaml.Controls.Chart" 
      xmlns:telerikPrimitives="using:Telerik.UI.Xaml.Controls.Primitives"> 
    <telerikChart:RadCartesianChart PaletteName="DefaultLight" Width="300" Height="200"> 
        <telerikChart:RadCartesianChart.DataContext> 
            <local:ViewModel/> 
        </telerikChart:RadCartesianChart.DataContext> 
        <telerikChart:BarSeries ItemsSource="{Binding SeriesData}" PaletteMode="DataPoint"> 
            <telerikChart:BarSeries.HorizontalAxis> 
                <telerikChart:CategoricalAxis/> 
            </telerikChart:BarSeries.HorizontalAxis> 
            <telerikChart:BarSeries.VerticalAxis> 
                <telerikChart:LinearAxis/> 
            </telerikChart:BarSeries.VerticalAxis> 
            <telerikChart:BarSeries.CategoryBinding> 
                <telerikChart:PropertyNameDataPointBinding PropertyName="Category"/> 
            </telerikChart:BarSeries.CategoryBinding> 
            <telerikChart:BarSeries.ValueBinding> 
                <telerikChart:PropertyNameDataPointBinding PropertyName="Value"/> 
            </telerikChart:BarSeries.ValueBinding> 
        </telerikChart:BarSeries> 
    </telerikChart:RadCartesianChart> 
 
    <telerikPrimitives:RadLegendControl> 
        <telerikPrimitives:RadLegendControl.LegendItems> 
            <telerikPrimitives:LegendItem Fill="#1E98E4" Stroke="#1E98E4" Title="Dogs"/> 
            <telerikPrimitives:LegendItem Fill="#FFC500" Stroke="#FFC500" Title="Cats"/> 
            <telerikPrimitives:LegendItem Fill="#FF2A00" Stroke="#FF2A00" Title="Birds"/> 
        </telerikPrimitives:RadLegendControl.LegendItems> 
    </telerikPrimitives:RadLegendControl> 
</Grid> 

Figure 1: Unbound RadLegendControl