Question

我创建了一个播放器类，我正在尝试将我的播放器类与我的菜单驱动播放器程序一起使用，但我不断收到错误'Assignment_7.Program.ProcessCreate（int，string，string，int，int）的最佳重载方法，Assignment_7.Player，ref in，int）'我的方法有一些无效的参数我试图用我的菜单

任何帮助都将不胜感激。

// MAXPLAYERS常量是物理表大小 const Int32 MAXPLAYERS = 23;

    //Declare the player tables

    Player[] players = new Player[MAXPLAYERS];

    //Keep track of the actual number of players (i.e. logical table size)
    Int32 playerCount = 0;

    //Main Driver
    char menuItem;
    Console.WriteLine("Welcome to the player system...\n");
    menuItem = GetMenuItem();
    while (menuItem != 'X')
    {
        ProcessMenuItem(menuItem, number, firstName, lastName, goals, assists, players, ref playerCount);
        menuItem = GetMenuItem();
    }
    Console.WriteLine("\nThank you, goodbye");
    Console.ReadLine();
}
//new Player(number, firstName, lastName, goals, assists)
//Returns either a 'C', 'R', 'U', 'D', 'L', or 'X' to the caller
static char GetMenuItem()
{
    char menuItem;
    DisplayMenu();
    menuItem = char.ToUpper(char.Parse(Console.ReadLine()));
    while (menuItem != 'C'
        && menuItem != 'L' && menuItem != 'X' && menuItem != 'R' && menuItem != 'U' && menuItem != 'D')
    {
        Console.WriteLine("\nError - Invalid menu item");
        DisplayMenu();
        menuItem = char.ToUpper(char.Parse(Console.ReadLine()));
    }
    return menuItem;
}

static void DisplayMenu()
{
    Console.WriteLine("\nPlease pick an item:");
    Console.WriteLine("C - Create Player");
    Console.WriteLine("R - Retrive Player");
    Console.WriteLine("U - Update Player");
    Console.WriteLine("D - Delete Player");
    Console.WriteLine("L - List Players");
    Console.WriteLine("X - Exit");
}

//Routes to the appropriate process routine based on the user menu choice
static void ProcessMenuItem(Char menuItem, Int32 number, String firstName, String lastName, Int32 goals,
    Int32 assists, Player[] players, ref Int32 playerCount, Int32 MAXPLAYERS)
{
    switch (menuItem)
    {
        case 'C':
            ProcessCreate(number, firstName, lastName, goals, assists, ref playerCount, players, MAXPLAYERS);
            break;
        case 'L':
            ProcessList(number, firstName, lastName, goals, assists,players, ref playerCount);
            break;
        case 'R':
            ProcessRetrive(number, lastName, firstName, goals,  assists, ref playerCount MAXPLAYERS);
            break;

        case 'U':
            ProcessUpdate(number, firstName,lastName,goals ,assists, ref playerCount, MAXPLAYERS);
            break;
        case 'D':
            DeletePlayer(number, firstName,lastName,goals ,assists, ref playerCount, MAXPLAYERS);
               break;

    }
}

Answer 1

您在MAXPLAYERS

的调用中缺少最后一个参数（ProcessMenuItem）

ProcessMenuItem(menuItem, number, firstName, lastName, goals, assists, players, ref playerCount, MAXPLAYERS)

其他一些建议：

让ProcessMenuItem返回int，而不是使用ref参数
如果MAXPLAYERS是const成员，那么它不需要是ProcessMenuItem的参数（因为它现在正在隐藏const成员）。< / LI>
考虑创建一个Player类并将其传递给ProcessMenuItem而不是几个参数。

对于＆＃39; ...＆＃39;的最佳超载方法有一些无效的论点

1 个答案: