Question

我正在尝试在Windows控制台应用程序中创建一个简单的电话目录程序。我使用过SortedDictionary，其中Key是name，Value是number，List是地址，StringDictionary是email-ids。我将所有这些放在名为Directory的类中，然后通过Main中的实例调用它。我在枚举目录时面临问题。我想在同一行打印一个人的所有四个条目。任何人都可以告诉我应该怎么做。这就是我的尝试。我很确定我的逻辑中有很多错误。不便之处： -

public class Directry    
{      
    List <string> Email_id= new List <string>();

    SortedDictionary<string, int> Dict = new SortedDictionary<string, int>();
    StringCollection Adress=new StringCollection();
    public Directry(SortedDictionary<string, int> dict, StringCollection adress, List<string> email)
    {
       this.Dict = dict;
       this.Email_id = email;
       this.Adress = adress;
    }      
}

class Another
{
    static void Main(string[] args)
    {
        SortedDictionary<string, int> dict = new SortedDictionary<string, int>();
        List<string> email = new List<string>();
        StringCollection adres = new StringCollection();
        Directry dir = new Directry( dict, adres,email);
        string key, adress, Email;
        int numbr;
        start_again:
        for (int i = 0; i <2; i++)
        {
            Console.WriteLine("enter name to be added in the directory");
            key = Console.ReadLine();
            Console.WriteLine("enter number to be added in the directory");
            numbr = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("enter address to be added in the directory");
            adress = Console.ReadLine();
            Console.WriteLine("enter your email-id to be added in the directory");
            Email = Console.ReadLine();
            dict.Add(key, numbr);
            email.Add(Email);
            adres.Add(adress);
        }
        Console.WriteLine("do you wish to continue-y/n?");
        char c = Convert.ToChar(Console.ReadLine());
        if (c == 'y')
        {
            Console.WriteLine("you said yes");
            goto start_again;
        }
        else
        {
            Console.WriteLine("no more entries can be added");
            Console.WriteLine("Name         Number          adress            email");
            foreach (object ot in dir)
            {
                Console.WriteLine(ot);
            }               
        }
        Console.ReadLine();
    }
}

感谢。

Answer 1

这段代码远非完美，但它应该让你顺利。

 public class Directory
{
    public List<string> EmailAddresses = new List<string>();
    public List<string> Addresses = new List<string>();

    public void Add(string email, string address)
    {
        EmailAddresses.Add(email);
        Addresses.Add(address);
    }
}

class Another
{
    static void Main(string[] args)
    {

        SortedDictionary<string, Directory> _directory = new SortedDictionary<string, Directory>();
        string key, adress, Email;
        int numbr;
    start_again:
        for (int i = 0; i < 2; i++)
        {
            Console.WriteLine("enter name to be added in the directory");
            key = Console.ReadLine();
            Console.WriteLine("enter number to be added in the directory");
            numbr = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("enter address to be added in the directory");
            adress = Console.ReadLine();
            Console.WriteLine("enter your email-id to be added in the directory");
            Email = Console.ReadLine();

            Directory dir = new Directory();
            dir.Add(Email, adress);

            _directory.Add(key, dir);

        }
        Console.WriteLine("do you wish to continue-y/n?");
        char c = Convert.ToChar(Console.ReadLine());
        if (c == 'y')
        {
            Console.WriteLine("you said yes");
            goto start_again;
        }
        else
        {
            Console.WriteLine("no more entries can be added");
            Console.WriteLine("Name         Number          adress            email");
            foreach (KeyValuePair<string, Directory> d in _directory)
            {
                Console.WriteLine(string.Format("{0}, {1}, {2}", d.Key, d.Value.Addresses.First(), d.Value.EmailAddresses.First()));
            }
        }
        Console.ReadLine();
    }

Answer 2

你没有以特别好的OO方式对此进行编码。

我建议将代码结构更改为......

public class DirectoryEntry
{
    public string Name { get; set; }
    public string PhoneNumber { get; set; }
    public string Addresss { get; set; }
    public string Email { get; set; }
}

public class Directory
{
    List<DirectoryEntry> _entries;

    public Directory()
    {
        _entries = new List<DirectoryEntry>();
    }

    public List<DirectoryEntry> Entries { get { return _entries; } }
}

你可以充实所有这些以保持目录的顺序，不允许重复的名字，或任何你想要的。

现在你可以拥有像

这样的东西

Directory directory = new Directory();
directory.Entries.Add(new DirectoryEntry { Name = "Tom", Number = "01293485943" })

foreach (var entry in directory.Entries.OrderBy(de => de.Name))
{
     Console.WriteLine("Name: {0}, Number: {1}", entry.Name, entry.Number);
}

Answer 3

通过它的外观你宣布字典

Directry dir = new Directry( dict, adres,email);

但是你没有使用从控制台读取的值来更新它。您可以在Dictionary类中创建一个方法，将dict，adres和email对象传递给它。

编辑以从字典中获取值：

您的Directry对象有一个SortedDictonary，将其公开。

public SortedDictionary<string, int> Dict = new SortedDictionary<string, int>();

然后这样枚举：

 foreach (KeyValuePair<string, int> kvp in dir.Dict)
            {
                Console.WriteLine(kvp.Key, kvp.Value);
            }

电话目录示例

3 个答案: