我在输入案例中会放置什么代码？

Question

我做了一个开关案例，我使用向上箭头键，向下箭头键并输入键。但是我无法想到如何将代码放入我可以选择选项的输入案例中。

public static void entries()
    {
        keyPressed = Console.ReadKey(true);
        switch (keyPressed.Key)
        {

            case ConsoleKey.DownArrow:
                if (keyPressed.Key.ToString() == "DownArrow")// selects the curitem when the down arrow key is pressed
                {
                    curItem++;
                    if (curItem > menuItems.Length - 1) curItem = 0;
                }
                break;
            case ConsoleKey.UpArrow:
                if (keyPressed.Key.ToString() == "UpArrow")// selects the curitem when the up arrow key is pressed
                {
                    curItem--;
                    if (curItem < 0) curItem = Convert.ToInt16(menuItems.Length - 1);

                }
                break;
            case ConsoleKey.Enter:
                if (keyPressed.Key.ToString() == "Enter")// when enter is pressed it will go to one of the choices 
                {

                }
                break;
            default:
                break;
        }
    }

Answer 1

关于嵌套if语句的想法是正确的，还是有另一个开关。我可能会将此重新考虑到另一个函数中：

case ConsoleKey.Enter:
   chooseOption(curItem);
   break;

...

void chooseOption(int item)
{
   switch(item)
   {
      case 1:
        //Do item 1
        break;
      case 2:
        //Do item 2
        break;
      case 3:
        //Do item 3
        break;
   }
}

Answer 2

根据您的评论。以下是如何在menuItems数组中显示当前项目。我假设menuItems包含一些字符串或整数或者可以轻松写入控制台的东西。

case ConsoleKey.Enter:
// when enter is pressed it will go to one of the choices 
   Console.Clear();
   Console.WriteLine(menuItems[curItem]);
   break;