Candlestick chart

info

Charts are available with Avalonia Pro.

Candlestick charts are used to describe price movements of a security, derivative, or currency over time. Each candle shows the open, high, low, and close prices for a specific period.

When to use

• Market analysis: Visualizing price volatility and market sentiment.
• Technical analysis: Identifying patterns like hammers, dojis, or engulfing candles.
• High-low tracking: Showing the full range of price action within a period.

Code example

XAML

<charts:FinancialChart Name="CandlestickChartSample" Title="Stock Price (ACME)" Height="300">
    <charts:FinancialChart.Series>
        <charts:CandlestickSeries ItemsSource="{Binding CandlestickData}"
                                    HighPath="High" LowPath="Low"
                                    OpenPath="Open" ClosePath="Close"
                                    DatePath="Date" />
    </charts:FinancialChart.Series>
</charts:FinancialChart>

Data model (C#)

using System;

public record FinancialPoint(DateTime Date, double Open, double High, double Low, double Close);

public ObservableCollection<FinancialPoint> CandlestickData { get; } = new(GenerateFinancialData(50));

private static IEnumerable<FinancialPoint> GenerateFinancialData(int count)
{
    var date = DateTime.Today.AddDays(-count);
    var price = 100.0;
    var random = new Random(42);

    for (var i = 0; i < count; i++)
    {
        var open = price;
        var close = open + (random.NextDouble() - 0.5) * 5;
        var high = Math.Max(open, close) + random.NextDouble() * 2;
        var low = Math.Min(open, close) - random.NextDouble() * 2;

        yield return new FinancialPoint(date.AddDays(i), open, high, low, close);
        price = close;
    }
}

Common properties

Property	Description	Default
ItemsSource	The collection of financial data points.	null
OpenPath	Path to the 'Open' price property.	null
HighPath	Path to the 'High' price property.	null
LowPath	Path to the 'Low' price property.	null
ClosePath	Path to the 'Close' price property.	null
DatePath	Path to the date or time value used along the horizontal axis. Values can be DateTime, DateTimeOffset, or parseable date strings.	null
UpFill	Fill brush for candles where Close >= Open.	#4CAF50
DownFill	Fill brush for candles where Close < Open.	#F44336
UpStroke	Outline brush for candles where Close >= Open.	#4CAF50
DownStroke	Outline brush for candles where Close < Open.	#F44336
CandleWidth	Width of each candle as a fraction of the available slot.	0.8

See also

• Financial chart
• OHLC chart