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本教程说明了如何使用多个AreaSeries创建简单的2D图表。
AreaSeries可以看作是连接分配给它的所有数据点并为该线和轴之间的区域着色的线。

从不同数据的可视化比较到随时间变化的趋势/模式的可视化，可以通过多种方式使用AreaSeries。

本教程假定您已在WinForms或WPF应用程序上使用LightningChart创建了新图表。如果没有，请按照我们的简单2D图表创建应用程序。

1.创建一个新的AreaSeries并为创建的系列添加样式。

// Create a new AreaSeries.
var areaSeries1 = new AreaSeries(chart.ViewXY, axisX, axisY);

// Add styling for created series.
areaSeries1.Fill.Color = Color.FromRgb(176, 196, 222); // LightSteelBlue.
areaSeries1.LineStyle.Color = Color.FromRgb(0, 0, 0); // Black.
areaSeries1.Fill.GradientFill = GradientFill.Solid;

// Define AreaSeriesPoints.
AreaSeriesPoint[] points1 = new AreaSeriesPoint[]{
    new AreaSeriesPoint(0, 10),
    new AreaSeriesPoint(1, 8),
    new AreaSeriesPoint(2, 9),
    new AreaSeriesPoint(3, 8),
    new AreaSeriesPoint(4, 7),
    new AreaSeriesPoint(5, 8),
    new AreaSeriesPoint(6, 7),
    new AreaSeriesPoint(7, 9),
    new AreaSeriesPoint(9, 8),
    new AreaSeriesPoint(10, 9)
};

// Add points to series.
areaSeries1.AddValues(points1);

// Add AreaSeries to chart.
chart.ViewXY.AreaSeries.Add(areaSeries1);

// Create 2 new AreaSeries.
var areaSeries2 = new AreaSeries(chart.ViewXY, axisX, axisY);
var areaSeries3 = new AreaSeries(chart.ViewXY, axisX, axisY);

// Add styling for created series.
areaSeries2.Fill.Color = Color.FromRgb(250, 250, 210); // LightGoldenrodYellow.
areaSeries2.LineStyle.Color = Color.FromRgb(0, 0, 0); // Black.
areaSeries2.Fill.GradientFill = GradientFill.Solid;

areaSeries3.Fill.Color = Color.FromRgb(255, 140, 0); // DarkOrange.
areaSeries3.LineStyle.Color = Color.FromRgb(0, 0, 0); // Black. 
areaSeries3.Fill.GradientFill = GradientFill.Solid;

// Define AreaSeriesPoints for both new AreaSeries.
AreaSeriesPoint[] points2 = new AreaSeriesPoint[]{
    new AreaSeriesPoint(0, 5),
    new AreaSeriesPoint(1, 7),
    new AreaSeriesPoint(3, 5),
    new AreaSeriesPoint(4, 6),
    new AreaSeriesPoint(5, 3),
    new AreaSeriesPoint(6, 5),
    new AreaSeriesPoint(7, 6),
    new AreaSeriesPoint(8, 7),
    new AreaSeriesPoint(9, 5),
    new AreaSeriesPoint(10, 4)
};

AreaSeriesPoint[] points3 = new AreaSeriesPoint[]{
    new AreaSeriesPoint(0, 1),
    new AreaSeriesPoint(1, 3),
    new AreaSeriesPoint(3, 1),
    new AreaSeriesPoint(4, 3),
    new AreaSeriesPoint(5, 2),
    new AreaSeriesPoint(6, 3),
    new AreaSeriesPoint(7, 2),
    new AreaSeriesPoint(8, 4),
    new AreaSeriesPoint(9, 1),
    new AreaSeriesPoint(10, 2)
};

// Add points to series.
areaSeries2.AddValues(points2);
areaSeries3.AddValues(points3);

 // Add AreaSeries to chart.
view.AreaSeries.Add(areaSeries2);
view.AreaSeries.Add(areaSeries3);

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