C# 无法将对象添加到字典中

我得到了一个带有列表的代码，我正试图把它改成字典。我的问题是，在“BankRates.cs”中，我无法将对象添加到字典中。我收到的消息“Converter.CurrencyDic”没有包含“Add”的定义…有人能解释一下原因吗

我有4个cs文件：

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

namespace Converter
{
    class Currency
    {
        //members

        //getters and setters
        public string Code { get; set; }
        public string Name { get; set; }
        public double Rate { get; set; }
        public double Unit { get; set; }
        public string Country { get; set; }

        //constractor
        public Currency(string code, string name, double rate, double unit, string country)
        {
            this.Code = code;
            this.Name = name;
            this.Rate = rate;
            this.Unit = unit;
            this.Country = country;
        }

        //override ToString method for visualization    
        public override string ToString()
        {
            return  (Name + "-" +Code);
        }
    }
}

货币词典：

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

namespace Converter
{
    class CurrencyDic
    {
        //setter and getter
        public Dictionary<string,Currency> currencyDic { get; set; }
        //constractor
        public CurrencyDic()
        {
            currencyDic = new Dictionary<string,Currency>();
        }
        public CurrencyDic(Dictionary<string,Currency> cur)
        {
            currencyDic = new Dictionary<string,Currency>(cur);
        }
        // implements foreach
        public IEnumerator<Currency> GetEnumerator()
        {
            foreach (Currency cur in currencyDic.Values) { yield return cur;}
        }
    }
}


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

namespace Converter
{
    interface IBankRates
    {
         void GetRates();
         double Convert(Currency from, Currency to, double amount);
    }
}

---

您的

CurrencyDict

类封装了一个

词典

，而不是继承一个

您需要在类中使用

字典

的

Add

方法：

foreach (var currency in allCurencies)
{
    currencyDic.currencyDic.Add(new Currency(currency.Code, currency.Name,
                                double.Parse(currency.Rate), 
                                double.Parse(currency.Unit), currency.Cuntry));
}

---

也许您应该尝试更改局部变量的名称，这样您就不会感到困惑。

因为您的

CurrencyDictionary

类没有add方法？你怎么会这么认为呢？我试了你的建议，但得到了这个错误：错误2方法“Add”没有重载需要1个参数

foreach (var currency in allCurencies)
{
    currencyDic.currencyDic.Add(new Currency(currency.Code, currency.Name,
                                double.Parse(currency.Rate), 
                                double.Parse(currency.Unit), currency.Cuntry));
}