无法隐式转换类型'NinjaTrader.NinjaScript.Indicators.QuickTradeObject'的类型我该如何解决

Question

我已声明我的名单如下

 private List<QuickTradeObject> AllTrades = new List<QuickTradeObject>();

当我反序列化json时，出现强制转换错误。我该如何解决？

using(StreamReader reader = new StreamReader(filename))
{
     string jsonString = reader.ReadToEnd();
   AllTrades = JsonConvert.DeserializeObject<QuickTradeObject>(jsonString); 
}

NinjaScript文件错误代码行列 PlotTrades.cs无法将类型'NinjaTrader.NinjaScript.Indicators.QuickTradeObject'隐式转换为'System.Collections.Generic.List'CS0029 72 16

#region Using declarations
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion
using Newtonsoft.Json;
using System.IO;

//This namespace holds Indicators in this folder and is required. Do not change it. 
namespace NinjaTrader.NinjaScript.Indicators
{
	public class PlotTrades : Indicator
	{
		private Series<double> EntryPrice;
		private Series<double> ExitPrice;
		private Series<DateTime> EntryTime;
		private Series<DateTime> ExitTime;
		private Series<string> TradeDirection;
		 private List<QuickTradeObject> AllTrades = new List<QuickTradeObject>();
		private string filename=@"c:\temp\2019-10-12--08-58-41EURUSDVShapedBreakout.json.json";

		protected override void OnStateChange()
		{
			if (State == State.SetDefaults)
			{
				Description									= @"Enter the description for your new custom Indicator here.";
				Name										= "PlotTrades";
				Calculate									= Calculate.OnBarClose;
				IsOverlay									= true;
				DisplayInDataBox							= true;
				DrawOnPricePanel							= true;
				DrawHorizontalGridLines						= true;
				DrawVerticalGridLines						= true;
				PaintPriceMarkers							= true;
				ScaleJustification							= NinjaTrader.Gui.Chart.ScaleJustification.Right;
				//Disable this property if your indicator requires custom values that cumulate with each new market data event. 
				//See Help Guide for additional information.
				IsSuspendedWhileInactive					= true;
				AddLine(Brushes.Orange, 1, "Equity");
			}
			else if (State == State.Configure)
			{
			}
			else if (State == State.DataLoaded)
			{				
				EntryPrice = new Series<double>(this);
				ExitPrice = new Series<double>(this);
				EntryTime = new Series<DateTime>(this);
				ExitTime = new Series<DateTime>(this);
				TradeDirection = new Series<string>(this);
				
				using(StreamReader reader = new StreamReader(filename))
{
     string jsonString = reader.ReadToEnd();
   AllTrades = JsonConvert.DeserializeObject<QuickTradeObject>(jsonString); 
}
	Print(		 AllTrades.ToString());	
				
			}
		}

		protected override void OnBarUpdate()
		{
			//Add your custom indicator logic here.
		}

	}
	public  class QuickTradeObject
    {
		 public DateTime sessionDate;
		public int TradeNumber;	
        public DateTime entryTime;
        public DateTime exitTime;
        public DateTime halfExitTime;
        public double entryPrice;
        public double halfExitPrice;
        public double fullExitPrice;
        public string Direction;
		public double highestHigh;
		public double lowestLow;
		 public double gains;
		public double risk;
		public double mfe;
		public double mae;
		public double todayTarget;
		public double todayTargetRemainingatStart;
		public double todayTargetRemainingatEnd;
		public double cumulativeGainsToday;
		public double cumulativeMAEtoday;
		public double cumulativeMFEtoday;
		public bool MeetTargetToday;
		public double reEntryTimeinMinutes;
		public double timeInTrade;
		public bool reEnteredSameDirection;
		public bool CrossedWeekend;
		public bool trigger50Percenttail;
		public bool pulledBackin5;
		public bool movedBackin5;
		public bool movedStop45;
		public double MaxMoveBeforePullback;
		public double MaxMoveAgainstAfterPullback;
		public DateTime pulledBackin5Time;
		public DateTime movedBackinTime;
        public string url;
        

    }
}

Answer 1

使用以下内容修复了该问题  AllTrades = JsonConvert.DeserializeObject>（jsonString）;