C#数字键决定三个数组操作中的哪一个_C#_Arrays_Menu

C#数字键决定三个数组操作中的哪一个

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C#数字键决定三个数组操作中的哪一个,c#,arrays,menu,C#,Arrays,Menu,我正在Visual Studio中用C#构建一个控制台应用程序，旨在实现以下三个功能：假冒汽车经销商一周内售出的汽车总数显示员工姓名/假冒汽车经销商为本周最佳员工在一周内售出的汽车将所有销售数据写入文本文件本周售出的汽车/员工需要每周进行随机抽样，但销量将在50至200辆之间，有6名员工在册与其他员工相比，本周最佳员工是一周内售出汽车最多的员工。本是本周最佳员工，他卖出150辆汽车，而乔丹卖出50辆 CODE: using System; using System.Collectio

我正在Visual Studio中用C#构建一个控制台应用程序，旨在实现以下三个功能：

假冒汽车经销商一周内售出的汽车总数

显示员工姓名/假冒汽车经销商为本周最佳员工在一周内售出的汽车

将所有销售数据写入文本文件

本周售出的汽车/员工需要每周进行随机抽样，但销量将在50至200辆之间，有6名员工在册

与其他员工相比，本周最佳员工是一周内售出汽车最多的员工。本是本周最佳员工，他卖出150辆汽车，而乔丹卖出50辆

CODE:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] stringEmployeeArray = new string[6];
            stringEmployeeArray[0] = "Bob";
            stringEmployeeArray[1] = "Steven";
            stringEmployeeArray[2] = "Jordan";
            stringEmployeeArray[3] = "Lee";
            stringEmployeeArray[4] = "Max";
            stringEmployeeArray[5] = "Ben";

            int[] intCarsSoldArray = new int[4];
            intCarsSoldArray[0] = 50;
            intCarsSoldArray[1] = 100;
            intCarsSoldArray[2] = 150;
            intCarsSoldArray[3] = 200;

            Random rnd = new Random();

            Console.WriteLine("Welcome to the Car Dealership Sales Tracker");
            Console.WriteLine("Press 1 to output the name and number of cars sold for the employee with the highest sales (1) ");
            Console.WriteLine("Press 2 to calculate the total number of cars sold by the company (2) ");
            Console.WriteLine("Press 3 to output all dsales data to a text file (3) ");
            Console.WriteLine("-------------------------------------------");
            Console.WriteLine("Enter option number and hit ENTER");
            int val = 5;
            ConsoleKeyInfo input = Console.ReadKey();
            Console.WriteLine();
            switch (val)
            {
                if (input.Key == ConsoleKey.NumPad1)
                case 1:
                    string r = rnd.Next(stringEmployeeArray.Count()).ToString();
                    int x = rnd.Next(intCarsSoldArray.Count());
                    Console.WriteLine("This weeks employee of the week is(string)stringEmployeeArray[r] + (int)intCarsSoldArray[x]");
                    break;
            if (input.Key == ConsoleKey.NumPad2)
                case 2:
                    int sum = intCarsSoldArray.Sum();
                    Console.WriteLine("Total cars sold for this week is(intCarsSoldArray.Sum)");
                    break;
            if (input.Key == ConsoleKey.NumPad3)
                case 3:
                    break;
            }
        }
    }
}

它运行在一种菜单系统上，按下数字键决定一个选项。目前，您可以看到1是本周销售汽车的最佳员工，一周销售汽车总数为2，文本文件写入为3

然而，当我输入一个选项号并点击回车时，程序会自动关闭

我想知道的是

按此键检索每周员工数据时如何对编号1进行编码

如何对数字2进行编码以计算一周内的所有销售额

按此键将一周的所有数据写入要存储在计算机上的文本文件时，如何对数字3进行编码，以及如何对实际写入的数据进行编码我还想知道如何发送一条错误消息，如果用户输入0或4或更多的数字，他们会收到这个WriteLine消息：“输入一个介于1和3之间的有效数字”

作为C#的新手，非常感谢您的帮助

谢谢

NEW CODE FOR RUFUS

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    public class Employee
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public int WeeklySales { get; set; }

        public override string ToString()
        {
            return $"{FirstName} {LastName}";
        }
    }
    public class Program
    {
        private static readonly Random Rnd = new Random();

        private static List<Employee> Employees = new List<Employee>
    {
        new Employee {FirstName = "Bob"},
        new Employee {FirstName = "Steven"},
        new Employee {FirstName = "Jordan"},
        new Employee {FirstName = "Lee"},
        new Employee {FirstName = "Max"},
        new Employee {FirstName = "Ben"}
    };
        static void Main()
        {
            GenerateSalesData();
            MainMenu();
        }
        private static void ClearAndWriteHeading(string heading)
        {
            Console.Clear();
            Console.WriteLine(heading);
            Console.WriteLine(new string('-', heading.Length));
        }
        private static void GenerateSalesData()
        {
            ClearAndWriteHeading("Car Dealership Sales Tracker - Generate Sales Data");

            foreach (var employee in Employees)
            {
                employee.WeeklySales = Rnd.Next(50, 201);
            }

            Console.WriteLine("\nSales data has been generated!!");
        }
        private static void MainMenu()
        {
            ClearAndWriteHeading("Car Dealership Sales Tracker - Main Menu");

            Console.WriteLine("1: Display employee of the week information");
            Console.WriteLine("2: Display total number of cars sold by the company");
            Console.WriteLine("3: Write all sales data to a text file");
            Console.WriteLine("4: Generate new weekly sales info");
            Console.WriteLine("5: Exit program\n");
            Console.Write("Enter option number 1 - 5: ");

            // Get input from user (ensure they only enter 1 - 5)
            int input;
            while (!int.TryParse(Console.ReadKey().KeyChar.ToString(), out input) ||
                input < 1 || input > 5)
            {
                // Erase input and wait for valid response
                Console.SetCursorPosition(0, 8);
                Console.Write("Enter option number 1 - 5:  ");
                Console.SetCursorPosition(Console.CursorLeft - 1, 8);
            }

            ProcessMenuItem(input);
        }
        private static void ProcessMenuItem(int itemNumber)
        {
            switch (itemNumber)
            {
                case 1:
                    DisplayEmployeeOfTheWeekInfo();
                    break;
                case 2:
                    DisplayTotalSales();
                    break;
                case 3:
                    WriteSalesToFile();
                    break;
                case 4:
                    GenerateSalesData();
                    break;
                default:
                    Environment.Exit(0);
                    break;
            }

            Console.Write("\nPress any key to go back to main menu...");
            Console.ReadKey();
            MainMenu();
        }
        private static void DisplayEmployeeOfTheWeekInfo()
        {
            ClearAndWriteHeading("Car Dealership Sales Tracker - Employee of the Week");

            var employeeOfTheWeek = Employees.OrderByDescending(employee => employee.WeeklySales).First();

            Console.WriteLine($"{employeeOfTheWeek} is the employee of the week!");
            Console.WriteLine($"This person sold {employeeOfTheWeek.WeeklySales} cars this week.");
        }
        private static string GetSalesData()
        {
            var data = new StringBuilder();
            data.AppendLine("Employee".PadRight(25) + "Sales");
            data.AppendLine(new string('-', 30));

            foreach (var employee in Employees)
            {
                data.AppendLine(employee.FirstName.PadRight(25) + employee.WeeklySales);
            }

            data.AppendLine(new string('-', 30));
            data.AppendLine("Total".PadRight(25) +
                Employees.Sum(employee => employee.WeeklySales));

            return data.ToString();
        }
        private static void DisplayTotalSales()
        {
            ClearAndWriteHeading("Car Dealership Sales Tracker - Total Sales");

            Console.WriteLine("\nHere are the total sales for the week:\n");
            Console.WriteLine(GetSalesData());
        }
        private static void WriteSalesToFile(string errorMessage = null)
        {
            ClearAndWriteHeading("Car Dealership Sales Tracker - Write Sales Data To File");

            if (!string.IsNullOrEmpty(errorMessage)) Console.WriteLine($"\n{errorMessage}\n");
            Console.Write("\nEnter the path to the sales data file:");
            var filePath = Console.ReadLine();
            var salesData = GetSalesData();
            var error = false;

            if (ERROR HERE File.Exists(filePath))
            {
                Console.Write("File exists. (O)verwrite or (A)ppend: ");
                var input = Console.ReadKey().Key;

                while (input != ConsoleKey.A && input != ConsoleKey.O)
                {
                    Console.Write("Enter 'O' or 'A': ");
                    input = Console.ReadKey().Key;
                }

                if (input == ConsoleKey.A)
                {
                    ERROR HERE File.AppendAllText(filePath, salesData);
                }
                else
                {
                    ERROR HERE File.WriteAllText(filePath, salesData);
                }
            }
            else
            {
                try
                {
                    ERROR HERE File.WriteAllText(filePath, salesData);
                }
                catch
                {
                    error = true;
                }
            }

            if (error)
            {
                WriteSalesToFile($"Unable to write to file: {filePath}\nPlease try again.");
            }
            else
            {
                Console.WriteLine($"\nSuccessfully added sales data to file: {filePath}");
            }
        }
    }
}

鲁弗斯的新代码
使用制度；
使用System.Collections.Generic；
使用System.Linq；
使用系统文本；
使用System.Threading.Tasks；
名称空间控制台AP3
{
公营雇员
{
公共字符串名{get；set；}
公共字符串LastName{get；set；}
public int WeeklySales{get；set；}
公共重写字符串ToString（）
{
返回$“{FirstName}{LastName}”；
}
}
公共课程
{
私有静态只读随机Rnd=new Random（）；
私有静态列表员工=新列表
{
新员工{FirstName=“Bob”}，
新员工{FirstName=“Steven”}，
新员工{FirstName=“Jordan”}，
新员工{FirstName=“Lee”}，
新员工{FirstName=“Max”}，
新员工{FirstName=“Ben”}
};
静态void Main（）
{
GenerateSalesData（）；
主菜单（）；
}
私有静态无效ClearAndWriteHeading（字符串标题）
{
Console.Clear（）；
控制台写入线（标题）；
WriteLine（新字符串（'-'，heading.Length））；
}
私有静态void GenerateSalesData（）
{
ClearAndWriteHeading（“汽车经销商销售跟踪器-生成销售数据”）；
foreach（员工中的var员工）
{
employee.WeeklySales=Rnd.Next（50201）；
}
Console.WriteLine（“\n已生成销售数据！！”）；
}
私有静态void主菜单（）
{
清除并写入标题（“汽车经销商销售跟踪-主菜单”）；
Console.WriteLine（“1：显示本周员工信息”）；
Console.WriteLine（“2：显示公司销售的汽车总数”）；
Console.WriteLine（“3：将所有销售数据写入文本文件”）；
Console.WriteLine（“4：生成新的每周销售信息”）；
Console.WriteLine（“5:退出程序\n”）；
控制台。写入（“输入选项号1-5:”）；
//从用户处获取输入（确保他们只输入1-5）
int输入；
而（！int.TryParse（Console.ReadKey（）.KeyChar.ToString（），out-input）||
输入<1 | |输入>5）
{
//擦除输入并等待有效响应
控制台。设置光标位置（0,8）；
控制台。写入（“输入选项号1-5:”）；
Console.SetCursorPosition（Console.CursorLeft-1,8）；
}
ProcessMenuItem（输入）；
}
私有静态void ProcessMenuItem（int itemNumber）
{
开关（项目编号）
{
案例1：
DisplayEmployeeOfWeekinfo（）；
打破
案例2：
DisplayTotalSales（）；
打破
案例3：
WriteSalesToFile（）；
打破
案例4：
GenerateSalesData（）；
打破
违约：
环境。退出（0）；
打破
}
控制台。写入（“\n按任意键返回主菜单…”）；
Console.ReadKey（）；
主菜单（）；
}
私有静态void显示EmployeeOfWeekinfo（）
{
清晰和书面标题（“汽车经销商销售跟踪-本周最佳员工”）；
var employeeofweek=Employees.OrderByDescending（employee=>employee.WeeklySales.First（）；
Console.WriteLine（$“{employeeofweek}是本周最佳员工！”）；
Console.WriteLine（$“此人本周出售了{employeeofweek.WeeklySales}辆汽车。”）；
}
私有静态字符串GetSalesData（）
{
var data=新的StringBuilder（）；
数据.AppendLine（“Employee”.PadRight（25）+“Sales”）；
data.AppendLine（新字符串（'-'，30））；
foreach（员工中的var员工）
{
data.AppendLine（employee.FirstName.PadRight（25）+employee.WeeklySales）；
}
data.AppendLine（新字符串（'-'，30））；
数据.AppendLine（“总计”）.PadRight（25）+
雇员.总数
switch (input.Key)
{
    case ConsoleKey.NumPad1:
        string r = rnd.Next(stringEmployeeArray.Count()).ToString();
        int x = rnd.Next(intCarsSoldArray.Count());
        Console.WriteLine("This weeks employee of the week is(string)stringEmployeeArray[r] + (int)intCarsSoldArray[x]");
        break;
    case ConsoleKey.NumPad2:
        int sum = intCarsSoldArray.Sum();
        Console.WriteLine("Total cars sold for this week is(intCarsSoldArray.Sum)");
        break;
    case ConsoleKey.NumPad2:
        break;
}

switch (input.Key)
{
    ... //other cases
    case default:
        Console.WriteLine("You pressed a wrong key");
        break;
}

using(FileStream fs = new FileStream("OutputFile.txt"))
using(StreamWriter writer = new StreamWriter(fs))
{
    writer.WriteLine("This is the first line of the text file");
    writer.Write("No new line here");
}

Console.WriteLine("This weeks employee of the week is(string)stringEmployeeArray[r] + (int)intCarsSoldArray[x]");

Console.WriteLine("This weeks employee of the week is " + stringEmployeeArray[r] + " " + intCarsSoldArray[x]);

Console.WriteLine("Total cars sold for this week is(intCarsSoldArray.Sum)");

Console.WriteLine("Total cars sold for this week is" + sum);

public class Employee
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public int WeeklySales { get; set; }

    public override string ToString()
    {
        return $"{FirstName} {LastName}";
    }
}

public class Program
{
    private static readonly Random Rnd = new Random();

    private static List<Employee> Employees = new List<Employee>
    {
        new Employee {FirstName = "Bob"},
        new Employee {FirstName = "Steven"},
        new Employee {FirstName = "Jordan"},
        new Employee {FirstName = "Lee"},
        new Employee {FirstName = "Max"},
        new Employee {FirstName = "Ben"}
    };

    private static void Main()
    {
        GenerateSalesData();
        MainMenu();
    }

    private static void ClearAndWriteHeading(string heading)
    {
        Console.Clear();
        Console.WriteLine(heading);
        Console.WriteLine(new string('-', heading.Length));
    }

    private static void GenerateSalesData()
    {
        ClearAndWriteHeading("Car Dealership Sales Tracker - Generate Sales Data");

        foreach (var employee in Employees)
        {
            employee.WeeklySales = Rnd.Next(50, 201);
        }

        Console.WriteLine("\nSales data has been generated!!");
    }

    private static void MainMenu()
    {
        ClearAndWriteHeading("Car Dealership Sales Tracker - Main Menu");

        Console.WriteLine("1: Display employee of the week information");
        Console.WriteLine("2: Display total number of cars sold by the company");
        Console.WriteLine("3: Write all sales data to a text file");
        Console.WriteLine("4: Generate new weekly sales info");
        Console.WriteLine("5: Exit program\n");
        Console.Write("Enter option number 1 - 5: ");

        // Get input from user (ensure they only enter 1 - 5)
        int input;
        while (!int.TryParse(Console.ReadKey().KeyChar.ToString(), out input) ||
            input < 1 || input > 5)
        {
            // Erase input and wait for valid response
            Console.SetCursorPosition(0, 8);
            Console.Write("Enter option number 1 - 5:  ");
            Console.SetCursorPosition(Console.CursorLeft - 1, 8);
        }

        ProcessMenuItem(input);
    }

    private static void ProcessMenuItem(int itemNumber)
    {
        switch (itemNumber)
        {
            case 1:
                DisplayEmployeeOfTheWeekInfo();
                break;
            case 2:
                DisplayTotalSales();
                break;
            case 3:
                WriteSalesToFile();
                break;
            case 4:
                GenerateSalesData();
                break;
            default:
                Environment.Exit(0);
                break;
        }

        Console.Write("\nPress any key to go back to main menu...");
        Console.ReadKey();
        MainMenu();
    }

    private static void DisplayEmployeeOfTheWeekInfo()
    {
        ClearAndWriteHeading("Car Dealership Sales Tracker - Employee of the Week");

        var employeeOfTheWeek = Employees
            .OrderByDescending(employee => employee.WeeklySales)
            .First();

        Console.WriteLine($"{employeeOfTheWeek} is the employee of the week!");
        Console.WriteLine(
            $"This person sold {employeeOfTheWeek.WeeklySales} cars this week.");
    }

    private static string GetSalesData()
    {
        var data = new StringBuilder();
        data.AppendLine("Employee".PadRight(25) + "Sales");
        data.AppendLine(new string('-', 30));

        foreach (var employee in Employees)
        {
            data.AppendLine(employee.FirstName.PadRight(25) + employee.WeeklySales);
        }

        data.AppendLine(new string('-', 30));
        data.AppendLine("Total".PadRight(25) + 
            Employees.Sum(employee => employee.WeeklySales));

        return data.ToString();
    }

    private static void DisplayTotalSales()
    {
        ClearAndWriteHeading("Car Dealership Sales Tracker - Total Sales");

        Console.WriteLine("\nHere are the total sales for the week:\n");
        Console.WriteLine(GetSalesData());
    }

    private static void WriteSalesToFile(string errorMessage = null)
    {
        ClearAndWriteHeading("Car Dealership Sales Tracker - Write Sales Data To File");

        if (!string.IsNullOrEmpty(errorMessage)) Console.WriteLine($"\n{errorMessage}\n");
        Console.Write("\nEnter the path to the sales data file: ");
        var filePath = Console.ReadLine();
        var salesData = GetSalesData();
        var error = false;

        if (File.Exists(filePath))
        {
            Console.Write("File exists. (O)verwrite or (A)ppend: ");
            var input = Console.ReadKey().Key;

            while (input != ConsoleKey.A && input != ConsoleKey.O)
            {
                Console.Write("Enter 'O' or 'A': ");
                input = Console.ReadKey().Key;
            }

            if (input == ConsoleKey.A)
            {
                File.AppendAllText(filePath, salesData);
            }
            else
            {
                File.WriteAllText(filePath, salesData);
            }
        }
        else
        {
            try
            {
                File.WriteAllText(filePath, salesData);
            }
            catch
            {
                error = true;
            }
        }

        if (error)
        {
            WriteSalesToFile($"Unable to write to file: {filePath}\nPlease try again.");
        }
        else
        {
            Console.WriteLine($"\nSuccessfully added sales data to file: {filePath}");
        }
    }