Question

如何获取在Main中的客户中分配的客户类的每个元素（名字，姓氏）。我无法在主要内容customers.firstname。

public static class CustomerProvider
{
    public static List<Customer> GetRandomCustomers()
    {
        var result = new List<Customer>();
        var customer1 = new Customer();
        customer1.FirstName = "Tony";
        customer1.LastName = "Romo";
        customer1.DateOfBirth = Convert.ToDateTime("03 / 10 / 88");
        result.Add(customer1);

        return result;
    }

    static void Main(string[] args)
    {
        var customers=  CustomerProvider.GetRandomCustomers();

        foreach (var c in customers)
        {
            Console.WriteLine(customers);
        }

        Console.ReadLine();
        Console.ReadLine(); 
    }

Answer 1

了解foreach正在做什么非常重要。

customers是Customer课程的集合，c每次循环都是Customer。{/ p>

所以你会这样写：

foreach (var c in customers)
{
    Console.WriteLine(c.FirstName);
    Console.WriteLine(c.LastName);
}

Answer 2

应该是这样的：

foreach (var c in customers)
  {
      Console.WriteLine(c.FirstName);
      Console.WriteLine(c.LastName);
  }

Answer 3

在你的foreach中，你写出了错误的变量：

    foreach (var c in customers)
    {
        Console.WriteLine(c.FirstName);
    }

Answer 4

简单

foreach (var c in customers)
{
    Console.WriteLine(c.FirstName );
    Console.WriteLine(c.LastName );
    Console.WriteLine(c.DateOfBirth );
}

Answer 5

您可以通过c foreach变量执行此操作。

foreach (var c in customers)
{
    Console.WriteLine(c.FirstName);
}

如何从静态类中检索返回的列表集合的内容

5 个答案: