Question

我需要让我的第二个嵌套for循环将数组值发送给类朋友。我不知道怎么回事？除非我在课堂上遗漏了什么？

namespace List
{
    class Program
    {
        public const int ARRAYSIZE = 5;
        static void Main()
        {
            string[] relSend = { "Enter  name", "enter phone number", "enter 2 didigt month dob", "enter 2 digit day dob", "enter 2 digit dob year" };
            string[] In = new string[5];
            string[] answer = new string[10];
            for (int x = 0; x <= 8; x++)
            {
                for (int i = 0; i < relSend.Length; i++)
                {
                    WriteLine("{0}", relSend[i]);
                    In[i] = Console.ReadLine();
                }

                for (int i = 0; i < In.Length; i++)
                {

                }
            }
        }
    }
}

public class Friends
{
    public string Name { get; set; }
    public int Phone { get; set; }
    public int Month { get; set; }
    public int Day { get; set; }
}

Answer 1

我猜你的意思是你想要从所收集的信息中创建一个对象，这没问题：

List<Friend> friends = new List<Friend>();

for (int x = 0; x <= 8; x++)
{
    for (int i = 0; i < relSend.Length; i++)
    {
        WriteLine("{0}", relSend[i]);
        In[i] = Console.ReadLine();
    }

    friends.Add( new Friend() { Name = In[0]
                              , Phone = int.Parse(In[1])
                              , Month = int.Parse(In[2])
                              , Day = int.Parse(In[3])
                              , Year = int.Parse(In[4])
                              }
               );
}

确保在创建对象之前验证输入！此外，我建议您使用string作为电话号码，因为您将丢失通常前缀0。 Month，Day和Year可能合并为一个DateTime。

Answer 2

告诉我您是否需要任何解释：

namespace List
{
    class Program
    {
        //Create a dictionary to find out each question is realated to which property.
        private static Dictionary<string, string> questions = new Dictionary<string, string>();
        static void Main()
        {
            questions.Add("Enter  name", "Name");
            questions.Add("enter phone number", "Phone");
            questions.Add("enter 2 didigt month dob", "Month");
            questions.Add("enter 2 digit day dob", "Day");
            questions.Add("enter 2 digit dob year", "Year");
            //Create list of friends
            List<Friends> friendsList = new List<Friends>();
            for (int x = 0; x <= 8; x++)
            {
                Friends f = new Friends();
                foreach (string q in questions.Keys)
                {
                    Console.WriteLine("{0}", q);
                    //Find property using Sytem.Reflection
                    System.Reflection.PropertyInfo property = f.GetType().GetProperty(questions[q]);
                    //Set value of found property
                    property.SetValue(f, Convert.ChangeType(Console.ReadLine(), property.PropertyType), null);
                }
                //Add a friend to list
                friendsList.Add(f);
            }
        }
    }
}

public class Friends
{
    public string Name { get; set; }
    public int Phone { get; set; }
    public int Year { get; set; }
    public int Month { get; set; }
    public int Day { get; set; }
}

循环对象创建

2 个答案: