Bars
Summary
Represents the Bars interface - the collection of Bar objects.
Signature
| public abstract interface Bars
|
Namespace
cAlgo.API
Methods
| Name | Description |
| Last | Gets the last bar in the chart. |
| LoadMoreHistory | Loads more historical bars. Method returns the number of loaded bars that were added to the beginning of the collection. |
| LoadMoreHistoryAsync | Loads more historical bars asynchronously. |
Properties
Events
| Name | Description |
| HistoryLoaded | Occurs when more history is loaded due to chart scroll on the left or due to API call. |
| Reloaded | Occurs when bars are refreshed due to reconnect. |
| Tick | Occurs when a new Tick arrives. |
| BarOpened | Occurs when the last bar is closed and a new bar is opened. |
Examples
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73 | using cAlgo.API;
using System;
namespace cAlgo
{
// A sample indicator that shows how to use Bars
[Indicator(IsOverlay = false, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
public class BarsSample : Indicator
{
private TextBlock _barTicksNumberTextBlock, _barsStateTextBlock;
[Output("Range", LineColor = "RoyalBlue")]
public IndicatorDataSeries Range { get; set; }
[Output("Body", LineColor = "Yellow")]
public IndicatorDataSeries Body { get; set; }
protected override void Initialize()
{
// Bars events
Bars.BarOpened += Bars_BarOpened;
Bars.Tick += Bars_Tick;
Bars.HistoryLoaded += Bars_HistoryLoaded;
Bars.Reloaded += Bars_Reloaded;
var grid = new Grid(2, 2)
{
BackgroundColor = Color.DarkGoldenrod,
HorizontalAlignment = HorizontalAlignment.Right,
VerticalAlignment = VerticalAlignment.Top,
Opacity = 0.5
};
grid.AddChild(new TextBlock
{
Text = "Bar Ticks #",
Margin = 5
}, 0, 0);
_barTicksNumberTextBlock = new TextBlock
{
Text = "0",
Margin = 5
};
grid.AddChild(_barTicksNumberTextBlock, 0, 1);
grid.AddChild(new TextBlock
{
Text = "Bars State",
Margin = 5
}, 1, 0);
_barsStateTextBlock = new TextBlock
{
Margin = 5
};
grid.AddChild(_barsStateTextBlock, 1, 1);
IndicatorArea.AddControl(grid);
}
private void Bars_Reloaded(BarsHistoryLoadedEventArgs obj)
{
_barsStateTextBlock.Text = "Reloaded";
}
private void Bars_HistoryLoaded(BarsHistoryLoadedEventArgs obj)
{
_barsStateTextBlock.Text = "History Loaded";
}
private void Bars_Tick(BarsTickEventArgs obj)
{
_barTicksNumberTextBlock.Text = Bars.TickVolumes.LastValue.ToString();
}
private void Bars_BarOpened(BarOpenedEventArgs obj)
{
_barsStateTextBlock.Text = "New Bar Opened";
}
public override void Calculate(int index)
{
Range[index] = Bars.HighPrices[index] - Bars.LowPrices[index];
Body[index] = Math.Abs(Bars.ClosePrices[index] - Bars.OpenPrices[index]);
}
}
}
|
Last update: March 30, 2023