在 visual studio 中的 c# 中从 extern/second 文件中获取方法

Get method from extern/second file in c# in visual studio

我正在尝试在另一个文件中获取 make 方法,然后将它们调用到主文件中,这是我第一次尝试这个,我不知道出了什么问题。

我在第二种方法SecondClass和方法Second中命名了class。然后在主文件中我写了 SecondClass.Second();.

这是我在主文件中的代码:

using System;

namespace uppdrag_2.cs
{
    class Program
    {
        static void Main(string[] args)
        {
            // Menu choices
            string[] menuOptions = new string[] {"New customer\t", "New staff\t", "Serivce\t", "Reparation", "Garantie", "End program"};
            int menuSelect = 0;

            while (true)
            {
                Console.Clear();
                Console.CursorVisible = false;
                Console.WriteLine("Hello and welcome! Please choose type of registration:");

                if (menuSelect == 0)
                {
                    Console.WriteLine("* " + menuOptions[0] + "<--");
                    Console.WriteLine(menuOptions[1]);
                    Console.WriteLine(menuOptions[2]);
                    Console.WriteLine(menuOptions[3]);
                    Console.WriteLine(menuOptions[4]);
                    Console.WriteLine(menuOptions[5]);
                }
                else if (menuSelect == 1)
                {
                    Console.WriteLine(menuOptions[0]);
                    Console.WriteLine("* " + menuOptions[1] + "<--");
                    Console.WriteLine(menuOptions[2]);
                    Console.WriteLine(menuOptions[3]);
                    Console.WriteLine(menuOptions[4]);
                    Console.WriteLine(menuOptions[5]);
                }
                else if (menuSelect == 2)
                {
                    Console.WriteLine(menuOptions[0]);
                    Console.WriteLine(menuOptions[1]);
                    Console.WriteLine("* " + menuOptions[2] + "<--");
                    Console.WriteLine(menuOptions[3]);
                    Console.WriteLine(menuOptions[4]);
                    Console.WriteLine(menuOptions[5]);
                }
                else if (menuSelect == 3)
                {
                    Console.WriteLine(menuOptions[0]);
                    Console.WriteLine(menuOptions[1]);
                    Console.WriteLine(menuOptions[2]);
                    Console.WriteLine("* " + menuOptions[3] + "<--");
                    Console.WriteLine(menuOptions[4]);
                    Console.WriteLine(menuOptions[5]);
                }
                else if (menuSelect == 4)
                {
                    Console.WriteLine(menuOptions[0]);
                    Console.WriteLine(menuOptions[1]);
                    Console.WriteLine(menuOptions[2]);
                    Console.WriteLine(menuOptions[3]);
                    Console.WriteLine("* " + menuOptions[4] + "<--");
                    Console.WriteLine(menuOptions[5]);
                }
                else if (menuSelect == 5)
                {
                    Console.WriteLine(menuOptions[0]);
                    Console.WriteLine(menuOptions[1]);
                    Console.WriteLine(menuOptions[2]);
                    Console.WriteLine(menuOptions[3]);
                    Console.WriteLine(menuOptions[4]);
                    Console.WriteLine("* " + menuOptions[5] + "<--");
                } 
                var keyPressed = Console.ReadKey();

                if (keyPressed.Key == ConsoleKey.DownArrow && menuSelect != menuOptions.Length - 1)
                {
                    menuSelect++;
                }
                else if (keyPressed.Key == ConsoleKey.UpArrow && menuSelect >= 1)
                {
                    menuSelect--;
                } 
                else if (keyPressed.Key == ConsoleKey.Enter)
                {
                    switch (menuSelect)
                    {
                        case 0:
                            Newcustomer();
                            break;
                        case 1:
                            NewStaff();
                                break;
                        case 2:
                            Service();
                            break;
                        case 3:
                            Reparation();
                                break;
                        case 4:
                            Garantie();
                            break;
                        case 5:
                            EndProgram();
                            break;
                    }
                }
            }
        }
        public static void Newcustomer(){
            Console.WriteLine("You have chosen to registrate a new customer!");
            Console.Clear();

            //Here I can`t reach the method from the other file
            SecondClass.Second();
            Console.Clear();

        }
        public static void NewStaff(){
            Console.Clear();
            Console.WriteLine("You have chosen to registrer a new staffmember!");
            Console.Clear();

        }
        public static void Service(){
            Console.WriteLine("You have chosen to register a service matter!");
            Console.Clear();

        }
        public static void Reparation(){
            Console.WriteLine("You have choosen to registrer a reparation matter!");
            Console.Clear();
            Console.ReadKey();
        }
        public static void Garantie(){
            Console.WriteLine("You have choosen to registrate a garantie matter!");
            Console.Clear();
            Console.ReadKey();
        }
        public static void EndProgram(){
            Console.Clear();
            Console.WriteLine("You have chosen to end the program! \nPress Enter to end...");
            Console.ReadKey();
            Environment.Exit(1);
        }
        
        }
    }

这是我在第二个文件中的代码:

using System;

namespace uppdrag_2.cs
{
    public static class SecondClass
    {
        public static void Second()
        {
            Console.WriteLine("utskrift från andra filen");
        }
    }
}

提前致谢!

好心的 regrads Johanna

针对“名称‘SecondClass’在当前上下文中不存在”的问题,您可以尝试以下步骤来解决。

首先,我们必须点击“显示潜在修复”,然后选择“在新文件中生成 class‘SecondClass’”。

其次,我们将得到一个名为“SecondClass.cs”的新文件。

最后,我们只需要将代码复制到新文件中即可。

综上所述,主文件中的代码不会再报错了