10.多柱状图（MuliBarChart）

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环境：.NET 7、MAUI

话接上回（9.单柱状图（SingleBarChart）），从单柱拓展到多柱状图。

1.数据设置

 private void InitValue(List<BasicSerieDto> dtos){Series = new ISeries[dtos.Count];for (int i = 0; i < dtos.Count; i++){Series[i] = dtos[i].ToMuliBar();}chart.SetBinding(CartesianChart.SeriesProperty, new Binding("Series"));}

2.使用

public partial class MuliBarChartDemo : ContentPage
{private class Fruit{public string name { get; set; }public string WeekDay { get; set; }public double Money { get; set; }}public MuliBarChartDemo(){InitializeComponent();#region 原始数据List<Fruit> apples = new List<Fruit>();for (int i = 0; i < 7; i++){apples.Add(new Fruit(){WeekDay = "周" + i,Money = (new Random()).NextDouble() * 10000,name = "苹果"});}List<Fruit> pears = new List<Fruit>();for (int i = 0; i < 7; i++){pears.Add(new Fruit(){WeekDay = "周" + i,Money = (new Random()).NextDouble() * 10000,name = "梨子"});}List<Fruit> bananas = new List<Fruit>();for (int i = 0; i < 7; i++){bananas.Add(new Fruit(){WeekDay = "周" + i,Money = (new Random()).NextDouble() * 10000,name = "香蕉"});}#endregionvar appleDto = new BasicSerieDto(apples[0].name, apples.Select(p => p.Money).ToList(), apples.Select(p => p.WeekDay + "\n" + Math.Round(p.Money, 2)).ToList());var pearDto = new BasicSerieDto(pears[0].name, pears.Select(p => p.Money).ToList(), pears.Select(p => p.WeekDay + "\n" + Math.Round(p.Money, 2)).ToList());var bananaDto = new BasicSerieDto(bananas[0].name, bananas.Select(p => p.Money).ToList(), bananas.Select(p => p.WeekDay + "\n" + Math.Round(p.Money, 2)).ToList());chart.BindData("一周营业额", apples.Select(p => p.WeekDay).ToList(), new List<BasicSerieDto>(){appleDto,pearDto,bananaDto});}
}