Hello,

i am using a xamDoughnutChart with HierarchicalRingSeries. I've got 4 'parent' items (1,1,2 and 5 childs)

I managed to change the Brushes of the four parent items but I cannot change the brushes of the child items. They always keep the same colour as their parent.

XAML:

<ig:XamDoughnutChart x:Name="doughnutChart" CenterData="{Binding DoughnutTitle}" InnerExtent="35" SliceClick="DoughnutChart_SliceClick" HorizontalAlignment="Left" Margin="200,30,0,0" VerticalAlignment="Top" Height="550" Width="550" AllowSliceExplosion="True">
            <ig:XamDoughnutChart.Series>
                <ig:HierarchicalRingSeries x:Name="ringSeries"
                    ItemsSource="{Binding doughnutData, UpdateSourceTrigger=PropertyChanged, IsAsync=true}"
                    LabelMemberPath="Name"
                    ValueMemberPath="Anteil"
                    ChildrenMemberPath="Children"
                    Legend="{Binding ElementName=legende}"
                    LabelsPosition="BestFit"
                    ToolTip="{}{Name}"
                    LabelExtent="20"
                    OthersCategoryThreshold="1" Loaded="ringSeries_Loaded"
                    />
            </ig:XamDoughnutChart.Series>
        </ig:XamDoughnutChart>

Code behind

public class Category
    {
         public string Name { get; set; }
         public double Anteil { get; set; }
    }

    public class HierarchicalCategory : Category
    {
        public HierarchicalCategory()
        {
            this.Children = new Collection<HierarchicalCategory>();
        }

        public Collection<HierarchicalCategory> Children { get; private set; }
    }

doughnutData = new BindingList<HierarchicalCategory>()
            {
                new HierarchicalCategory { Name = "Item1" , Anteil = 10},
                new HierarchicalCategory { Name = "Item2", Anteil = 0 },
                new HierarchicalCategory { Name = "Item3", Anteil = 10 },
                new HierarchicalCategory { Name = "Item4", Anteil = 80 },
            };
            doughnutData[0].Children.Add(new HierarchicalCategory { Name = "Stopped", Anteil = 100 });

            doughnutData[1].Children.Add(new HierarchicalCategory { Name = "Stopped", Anteil = 100 });

            doughnutData[2].Children.Add(new HierarchicalCategory { Name = "Stopped", Anteil = 50 });
            doughnutData[2].Children.Add(new HierarchicalCategory { Name = "Error", Anteil = 50 });

            doughnutData[3].Children.Add(new HierarchicalCategory { Name = "Test1", Anteil = 10 });
            doughnutData[3].Children.Add(new HierarchicalCategory { Name = "Test2", Anteil = 70 });
            doughnutData[3].Children.Add(new HierarchicalCategory { Name = "Test3", Anteil = 10 });
            doughnutData[3].Children.Add(new HierarchicalCategory { Name = "Test4", Anteil = 10 });
            doughnutData[3].Children.Add(new HierarchicalCategory { Name = "Test5", Anteil = 5 });

         private void UpdateColors()
        {
            var items = doughnutData;

            if (items == null) return;

            var brushes = new BrushCollection();
            
            foreach (var item in items)
            {
                    brush = ...
                //Do some stuff to determine colour and ignore items with value < threshold
                    brush = ...
                    
                brushes.Add(brush);                
            }
             ringSeries.Brushes = brushes;
             OnPropertyChanged("doughnutData");
        }

The first 4 Brushes added match to the 4 parent items. Brushes 5-13 don't have any effect.

Thanks for your support