public enum PolarChartLabelOverlap

@using System.Drawing

<DxPolarChart Data=@DataSource LabelOverlap="PolarChartLabelOverlap.Hide">
    <DxPolarChartBarSeries Name="Day" 
                           Color="Color.Sienna" 
                           ArgumentField="@((DiscretePoint i) => i.Arg)" 
                           ValueField="@((DiscretePoint i) => i.Day)">
        <DxChartSeriesLabel Visible="true" />
    </DxPolarChartBarSeries>
    <DxPolarChartBarSeries Name="Night" 
                           Color="Color.MidnightBlue" 
                           ArgumentField="@((DiscretePoint i) => i.Arg)" 
                           ValueField="@((DiscretePoint i) => i.Night)">
        <DxChartSeriesLabel Visible="true" />
    </DxPolarChartBarSeries>
</DxPolarChart>

namespace BlazorDemo.Data {
    public class DiscretePoint {
        public string Arg { get; set; }
        public int Day { get; set; }
        public int Night { get; set; }

        public DiscretePoint(string arg, int day, int night) {
            Arg = arg;
            Day = day;
            Night = night;
        }
    }
}

using System.Collections.Generic;
using BlazorDemo.Data;

// ...
    public class ChartDiscreteDataProvider : IChartDiscreteDataProvider {
        public List<DiscretePoint> GenerateData() {
            return new List<DiscretePoint>() {
                new DiscretePoint("January", 6, 2),
                new DiscretePoint("February", 7, 2),
                new DiscretePoint("March", 10, 3),
                new DiscretePoint("April", 14, 5),
                new DiscretePoint("May", 18, 8),
                new DiscretePoint("June", 21, 11),
                new DiscretePoint("July", 22, 13),
                new DiscretePoint("August", 22, 13),
                new DiscretePoint("September", 19, 11),
                new DiscretePoint("October", 15, 8),
                new DiscretePoint("November", 10, 5),
                new DiscretePoint("December", 7, 3),
            };
        }
    }