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本教程介紹了如何使用兩個BarSeries創建簡單的2D圖表。 
BarSeries將數據值表示為矩形條，并且可以用于以非常清晰的方式可視化數據之間的差異和方差。
在本教程中，BarSeries用于表示兩年期間的每月平均溫度。
本教程假定您已在WinForms或WPF應用程序上使用LightningChart創建了新圖表。如果沒有，請按照我們的簡單2D圖表創建應用程序。

您可以使用System.Windows.Media.Color或System.Drawing.Color定義顏色，具體取決于您使用的是WPF還是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的條形視圖布局。

// 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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