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本教程介绍了如何使用两个BarSeries创建简单的2D图表。 
BarSeries将数据值表示为矩形条，并且可以用于以非常清晰的方式可视化数据之间的差异和方差。
在本教程中，BarSeries用于表示两年期间的每月平均温度。
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。

您可以使用System.Windows.Media.Color或System.Drawing.Color定义颜色，具体取决于您使用的是WPF还是WinForms。

// Create a new BarSeries.
var barSeries1 = new BarSeries(chart.ViewXY, axisX, axisY);

 // Add styling to created series.
barSeries1.Fill.Color = Color.FromRgb(255, 165, 0); // Orange.
barSeries1.Fill.GradientFill = GradientFill.Solid;
barSeries1.Title.Text = "2017";
barSeries1.BarThickness = 10;

// Generate data as BarSeriesValues.
BarSeriesValue[] bars1 = new BarSeriesValue[]
{
    new BarSeriesValue(0, -5, null),
    new BarSeriesValue(1, -6, null),
    new BarSeriesValue(2, -2, null),
    new BarSeriesValue(3, 4, null),
    new BarSeriesValue(4, 10, null),
    new BarSeriesValue(5, 14, null),
    new BarSeriesValue(6, 17, null),
    new BarSeriesValue(7, 15, null),
    new BarSeriesValue(8, 10, null),
    new BarSeriesValue(9, 6, null),
    new BarSeriesValue(10, -2, null),
    new BarSeriesValue(11, -4, null)
};

// Add BarSeriesValues to BarSeries.
barSeries1.Values = bars1;

// Add BarSeries to chart.
chart.ViewXY.BarSeries.Add(barSeries1);

 // Create second BarSeries.
var barSeries2 = new BarSeries();

// Add styling to created series.
barSeries2.Fill.Color = Color.FromRgb(211, 211, 211); // LightGray.
barSeries2.Fill.GradientFill = GradientFill.Solid;
barSeries2.Title.Text = "2018";
barSeries2.BarThickness = 10;

BarSeriesValue[] bars2 = new BarSeriesValue[]
{
    new BarSeriesValue(0, -1, null),
    new BarSeriesValue(1, -1, null),
    new BarSeriesValue(2, 2, null),
    new BarSeriesValue(3, 8, null),
    new BarSeriesValue(4, 15, null),
    new BarSeriesValue(5, 19, null),
    new BarSeriesValue(6, 21, null),
    new BarSeriesValue(7, 19, null),
    new BarSeriesValue(8, 14, null),
    new BarSeriesValue(9, 8, null),
    new BarSeriesValue(10, 2, null),
    new BarSeriesValue(11, -7, null)
};

// Add BarSeriesValues to BarSeries.
barSeries2.Values = bars2;

// Add BarSeries to chart.
chart.ViewXY.BarSeries.Add(barSeries2);

7.配置BarSeries的条形视图布局。

// Configure bar view layout.
chart.ViewXY.BarViewOptions.Grouping = BarsGrouping.ByLocation;

// Create list of months.
string[] months = new string[]
{
    "January",
    "February",
    "March",
    "April",
    "May",
    "June",
    "July",
    "August",
    "September",
    "October",
    "November",
    "December"
};

// Create CustomAxisTicks to display months as X-axis values.
for (int i = 0; i < months.Length; i++)
{
    CustomAxisTick tick = new CustomAxisTick(axisX);
    tick.AxisValue = i;
    tick.LabelText = months[i];
    tick.Color = Color.FromArgb(35, 255, 255, 255);

    axisX.CustomTicks.Add(tick);
}

// Notify chart about set custom axis ticks.
axisX.InvalidateCustomTicks();

// Disable autoformating of labels.
axisX.AutoFormatLabels = false;

// Enable CustomAxisTicks.
axisX.CustomTicksEnabled = true;

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