One operation but two modification on the HorizentalLine

Created at 09 Feb 2022, 16:30

Joined 03.06.2020

One operation but two modification on the HorizentalLine
09 Feb 2022, 16:30

Hi Support Team,

I have the below code, which draws a horizontal line at the last tick bid price. And if I drag the line to a new position, the code will update the horizontal line's comment with the new price of it.

The issue I have is that the 'private void SLModified' would run twice, once when I DragEnd of it. And the 2nd run was comments updated. Though it doesn't affect my programme running, I still want to know is there any way to avoid the 2nd run when I drag the line?

Thanks,

using System;
using System.Linq;
using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class HorizentalLineTest : Robot
    {
        private ChartHorizontalLine hlStopLoss;             

        protected override void OnStart()   
        { 
            hlStopLoss = Chart.DrawHorizontalLine("StopLoss", Symbol.Bid,  Color.FromHex("#BBFF7777"), 1, LineStyle.LinesDots);
            hlStopLoss.IsInteractive   = true; hlStopLoss.IsLocked   = false; hlStopLoss.Comment = Symbol.Bid.ToString();
            Chart.ObjectsUpdated += SLModified; 
        }

        protected override void OnTick()    { }

        protected override void OnStop()    { Chart.RemoveObject(hlStopLoss.Name); }

        private void SLModified(ChartObjectsUpdatedEventArgs obj) //Modify HorizentialLine, to update Price in Comments
        {
            var horizentalLine = obj.ChartObjects.FirstOrDefault(iObject => iObject.ObjectType == ChartObjectType.HorizontalLine && iObject.Name.Equals(hlStopLoss.Name, StringComparison.OrdinalIgnoreCase));
            if (horizentalLine != null) 
            { 
                hlStopLoss.Comment = hlStopLoss.Y.ToString("0.00000"); 
                Print("HorizentalLine's Y: " + hlStopLoss.Y.ToString("0.00000"));
            }
        }

    }
}

@Capt.Z-Fort.Builder

Replies

amusleh
10 Feb 2022, 08:32

Hi,

You can use a bool flag to avoid the second call:

using System;
using System.Linq;
using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class HorizentalLineTest : Robot
    {
        private ChartHorizontalLine hlStopLoss;

        private bool _updatingComment;

        protected override void OnStart()
        {
            hlStopLoss = Chart.DrawHorizontalLine("StopLoss", Symbol.Bid, Color.FromHex("#BBFF7777"), 1, LineStyle.LinesDots);
            hlStopLoss.IsInteractive = true; hlStopLoss.IsLocked = false; hlStopLoss.Comment = Symbol.Bid.ToString();
            Chart.ObjectsUpdated += SLModified;
        }

        protected override void OnTick()
        { }

        protected override void OnStop()
        { Chart.RemoveObject(hlStopLoss.Name); }

        private void SLModified(ChartObjectsUpdatedEventArgs obj) //Modify HorizentialLine, to update Price in Comments
        {
            if (_updatingComment)
            {
                _updatingComment = false;

                return;
            }

            var horizentalLine = obj.ChartObjects.FirstOrDefault(iObject => iObject.ObjectType == ChartObjectType.HorizontalLine && iObject.Name.Equals(hlStopLoss.Name, StringComparison.OrdinalIgnoreCase));

            if (horizentalLine != null)
            {
                _updatingComment = true;

                hlStopLoss.Comment = hlStopLoss.Y.ToString("0.00000");
                Print("HorizentalLine's Y: " + hlStopLoss.Y.ToString("0.00000"));
            }
        }
    }
}

@amusleh

Capt.Z-Fort.Builder
10 Feb 2022, 15:59

RE:

Thank you Musleh as always, it works pretty well. :)

amusleh said:

Hi,

You can use a bool flag to avoid the second call:

using System;
using System.Linq;
using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class HorizentalLineTest : Robot
    {
        private ChartHorizontalLine hlStopLoss;

        private bool _updatingComment;

        protected override void OnStart()
        {
            hlStopLoss = Chart.DrawHorizontalLine("StopLoss", Symbol.Bid, Color.FromHex("#BBFF7777"), 1, LineStyle.LinesDots);
            hlStopLoss.IsInteractive = true; hlStopLoss.IsLocked = false; hlStopLoss.Comment = Symbol.Bid.ToString();
            Chart.ObjectsUpdated += SLModified;
        }

        protected override void OnTick()
        { }

        protected override void OnStop()
        { Chart.RemoveObject(hlStopLoss.Name); }

        private void SLModified(ChartObjectsUpdatedEventArgs obj) //Modify HorizentialLine, to update Price in Comments
        {
            if (_updatingComment)
            {
                _updatingComment = false;

                return;
            }

            var horizentalLine = obj.ChartObjects.FirstOrDefault(iObject => iObject.ObjectType == ChartObjectType.HorizontalLine && iObject.Name.Equals(hlStopLoss.Name, StringComparison.OrdinalIgnoreCase));

            if (horizentalLine != null)
            {
                _updatingComment = true;

                hlStopLoss.Comment = hlStopLoss.Y.ToString("0.00000");
                Print("HorizentalLine's Y: " + hlStopLoss.Y.ToString("0.00000"));
            }
        }
    }
}

@Capt.Z-Fort.Builder

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