按名字和姓氏排序列表，然后显示给用户

Question

我试图在控制台应用程序中使用列表存储和显示数据来构建联系人管理器程序。 我需要查看一个报告，该报告显示可用联系人的摘要，然后有一个菜单，允许用户与程序进行交互。 我有一种用数据和联系人对象创建列表的方法。 我做了一个按名字排序的方法和一个按姓氏排序的方法，但是我不确定如何显示返回给用户的联系人。

任何指导将不胜感激

static void Main(string[] args)
    {         
        //Declare the list

        List<Contact> contactList = new List<Contact>();

        //Main Driver
        char menuItem;
         Console.WriteLine("Contact List\n");
        menuItem = GetMenuItem();
        while (menuItem != 'Q')
        {

            ProcessMenuItem(menuItem, contactList);
            menuItem = GetMenuItem();

        }
        Console.WriteLine("\nThank you, goodbye");
        Console.ReadLine();
    }
    //Returns either a 'C', 'R', 'U', 'D', 'L', or 'X' to the caller
    static char GetMenuItem()
    {
        char menuItem;
        DisplayMenu();
        menuItem = char.ToUpper(IOConsole.GetChar("\nPlease pick an item: "));
        while (menuItem != 'C'
            && menuItem != 'R' && menuItem != 'Q' && menuItem != 'U' && menuItem != 'D' && menuItem != 'S' && menuItem != 'L' && menuItem != 'F' && menuItem != 'P' && menuItem != 'T')
        {
            Console.WriteLine("\nError - Invalid menu item");
            DisplayMenu();
            menuItem = char.ToUpper(IOConsole.GetChar("\nEnter option or M for menu:"));
        }
        return menuItem;
    }

    static void DisplayMenu()
    {
       Console.WriteLine("C-> Create Contacts");
       Console.WriteLine("R-> Remove Contacts");
       Console.WriteLine("U-> Update Contacts");
       Console.WriteLine("D -> Load data from file");
       Console.WriteLine("S-> Save data to file");
       Console.WriteLine("L-> View sorted by last name");
       Console.WriteLine("F-> View sorted by first name");
       Console.WriteLine("P-> View by partial name search");
       Console.WriteLine("T-> View by contact type");
       Console.WriteLine("Q-> Quit");
    }

    //Routes to the appropriate process routine based on the user menu choice
    static void ProcessMenuItem(Char menuItem, List<Contact> contactList)
    {
        switch (menuItem)
        {
            case 'C':
                createContact();
                break;
            case 'R':
                removeContact(contactList);
                break;
            case 'U':
                updateContact(contactList);
                break;
            case 'D':
                LoadToFile();
                break;
            case 'S':
                saveToFile();
                break;

            case 'L':
                sortByLastName(contactList);
                break;
            case 'F':
                sortByFirstName(contactList);
                   break;
            case 'P':
                   DisplayList(contactList);
                   break;
            case 'T':
                   sortByContactType();
                   break;
            case 'Q':

                   break;

        }                   
    }


//Sorts the list by last name
         public static void sortByLastName(List<Contact> contactList )
        {

          contactList.OrderBy(c => c.GetLastName);




        }
        //Sorts the list by first name
         public static void sortByFirstName(List<Contact> contactList)
        {
           contactList.OrderBy(c => c.GetFirstName);

        }

Answer 1

您为什么不尝试这种方法：

contactList.Sort((x, y) => string.Compare(x.GetLastName, y.GetLastName));