HorizontalLine

public LineSettings HorizontalLine { get; set; }

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using PTLRuntime.NETScript;
using PTLRuntime.NETScript.Charts;

namespace ChartPropertiesExamples
{
     public class ChartPropertiesExamples : NETStrategy
     { 
         LineSettings horizontalLine;
         public override void Init()
         {
             horizontalLine = CurrentChart.Settings.Grid.HorizontalLine;
         }
     }
}