C# 教程&x2013；Net中的BDD和依赖项注入（3）

请帮助我删除此错误。它在结果下的最后第二行显示蓝色线，并用粗体字母表示。错误包括： 1“RockPaperScissors.DecisionEngine”不包含“Result”的定义，并且找不到接受“RockPaperScissors.DecisionEngine”类型的第一个参数的扩展方法“Result”（是否缺少using指令或程序集引用？）C:\Users\MOB140003208\documents\visual studio 2012\Projects\RockPaperScissors\RockPaperScissors\Game.cs 42 37 RockPaperScissors 2找不到元数据文件“C:\Users\MOB140003208\documents\visual studio 2012\Projects\RockPaperScissors\RockPaperScissors\bin\Debug\RockPaperScissors.dll”C:\Users\MOB140003208\documents\visual studio 2012\Projects\RockPaperScissors\RockPaperScissors\CSC RockPaperScissistest

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace RockPaperScissors
{
public class Game
{


    private string _playerMove;
    private DecisionEngine _decisionEngine;

    public string PlayerMove
    {
        private get
        {
            if (String.IsNullOrEmpty(_playerMove))
                throw new ArgumentNullException("PlayerMove");
            return _playerMove;
        }
        set
        {
            _playerMove = value;
        }
    }
    public Game()
    {
        _decisionEngine = new DecisionEngine();
    }

    public Game(DecisionEngine decisionEngine)
    {
        _decisionEngine = decisionEngine;
    }

    public string Result()
    {
        var engine = _decisionEngine;
        var gameResult = engine.Result(Move.Rock, (Move)Enum.Parse(typeof(Move), PlayerMove));
        return gameResult == GameResult.PlayerWins ? "Player Wins!" : "Computer Wins!";
    }
}

---

}

似乎

RockPaperScissors.DecisionEngine

受到

保护

或未应用访问修饰符。将其公开将解决这个问题

RockPaperScissors.Game.Game

可能是

公共的

。将

RockPaperScissors.DecisionEngine

公开

或将其设置为与

RockPaperScissors.Game.Game
相同的可访问性修饰符，猜测一下，将
DecisionEngine
公开