关于C#Generic Collection的问题

发布时间：2020-12-16 10:38:35 所属栏目：百科来源：网络整理

导读：在下面的代码中,我们的Dictionary的类型是 int,Customer,但我怎么知道Customer的类型是什么？看来客户是一个字符串,因为我们是客户cust1 =新客户(1,“客户1”); …. 我糊涂了… public class Customer { public Customer(int id,string name) { ID = id; Nam

在下面的代码中,我们的Dictionary的类型是< int,Customer>,但我怎么知道Customer的类型是什么？看来客户是一个字符串,因为我们是客户cust1 =新客户(1,“客户1”); …. 我糊涂了…

public class Customer
    {
        public Customer(int id,string name)
        {
            ID = id;
            Name = name;
        }

    private int m_id;

    public int ID
    {
        get { return m_id; }
        set { m_id = value; }
    }

    private string m_name;

    public string Name
    {
        get { return m_name; }
        set { m_name = value; }
    }
}

 Dictionary<int,Customer> customers = new Dictionary<int,Customer>();

Customer cust1 = new Customer(1,"Cust 1");
Customer cust2 = new Customer(2,"Cust 2");
Customer cust3 = new Customer(3,"Cust 3");

customers.Add(cust1.ID,cust1);
customers.Add(cust2.ID,cust2);
customers.Add(cust3.ID,cust3);

foreach (KeyValuePair<int,Customer> custKeyVal in customers)
{
    Console.WriteLine(
        "Customer ID: {0},Name: {1}",custKeyVal.Key,custKeyVal.Value.Name);
}

解决方法

Customer对象的类型为Customer,即使它包含int和字符串.当您致电客户cust1 =新客户(1,“客户1”)时;这真的是说“让我成为Customer类型的对象,它包含整数1和字符串Cust 1”

（编辑：李大同）

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