C# 错误'；程序编号'；是一个'；类型'；但是像'；变量

错误“Program.Number”是“类型”，但与“变量”一样使用

当我试着运行这个程序的时候，我不断地得到上面的错误，我做错了什么

using System;

class Program
{
    enum Number{ standard = 1, express = 2, same = 3};

    const int A = 1, B = 2;
    const int Y = 3, N = 4;

    static void Main()
     {

        double cost, LB;
        int numValues, Number_of_items ;

         Console.WriteLine("please enter the type of shiping you want");
        Console.WriteLine("Enter 1:standard shipping.");
        Console.WriteLine("Enter 2:express shipping.");
        Console.WriteLine("Enter 3:same day shipping.");


        switch ((Number))
        { 
            case Numbers.standard:
                Console.WriteLine("thankyou for chooseing standerd shipping");
                Console.WriteLine("please choose a catagory");
                Console.Write("Type A or B to make your selection");
                {      if (A==A)
                {
                    Console.Write("please enter the number of items");
                    Number_of_items = int.Parse(Console.ReadLine());
                    cost = 3 * Number_of_items;

                    Console.Write("is this shipment going to alaska or Hawaii? (y or n)");
                    if (Y==Y)
                    {
                        cost = cost + 2.50;

                        Console.WriteLine("Total cost is {0}." , cost);
                    }
                    else 
                        Console.WriteLine("total cost is {0}." , cost);


                }
                else 
                Console.Write("please enter the weiht in pounds");
               LB =  double.Parse(Console.ReadLine());
                cost = 1.45 * LB;
                Console.WriteLine("is this shipment going to alaska or Hawaii? (y or n)");
        }
                if (Y==Y)
                {
                    cost = cost + 2.50;

                        Console.WriteLine("Total cost is {0}." , cost);
                }
                else 
                        Console.WriteLine("total cost is {0}." , cost);

                break;


                case Numbers.express:
                Console.WriteLine("thankyou for chooseing Express Shipping");
                Console.WriteLine("please choose a catagory");
                Console.Write("Type A or B to make your selection");

                    {       if (A==A)
                        Console.Write("please enter the number of items");
                        Number_of_items = int.Parse(Console.ReadLine());
                        cost = 4 * Number_of_items;
                        {
                    Console.Write("is this shipment going to alaska or Hawaii? (y or n)");
                    if (Y==Y)
                    {
                        cost = cost + 5.00;

                        Console.WriteLine("Total cost is {0}." , cost);
                    }
                    else 
                        Console.WriteLine("total cost is {0}." , cost);


                    }
                     if(B==B) 

                Console.Write("please enter the weiht in pounds");
               LB =  double.Parse(Console.ReadLine());
                cost = 2.50 * LB;
                Console.WriteLine("is this shipment going to alaska or Hawaii? (y or n)");
                    }
                if (Y==Y)
                {
                    cost = cost + 5.00;

                        Console.WriteLine("Total cost is {0}." , cost);
                }
                else 
                        Console.WriteLine("total cost is {0}." , cost);
            break;





                case Numbers.same:
                Console.WriteLine("thankyou for chooseing Same Day Shipping");
                Console.WriteLine("please choose a catagory");
                Console.Write("Type A or B to make your selection");
                if (A == A)
                    Console.Write("please enter the number of items");
                    Number_of_items = int.Parse(Console.ReadLine());
                    cost = 5.50 * Number_of_items;

                    Console.Write("is this shipment going to alaska or Hawaii? (y or n)");
                    if (Y==Y)
                    {
                        cost = cost + 8.00;

                        Console.WriteLine("Total cost is {0}." , cost);
                    }
                    else 
                        Console.WriteLine("total cost is {0}." , cost);



                if (B==B)

                Console.Write("please enter the weiht in pounds");
               LB =  double.Parse(Console.ReadLine());
                cost = 3.00 * LB;
                Console.WriteLine("is this shipment going to alaska or Hawaii? (y or n)");

                if (Y==Y)
                {
                    cost = cost + 8.00;

                        Console.WriteLine("Total cost is {0}." , cost);
                }
                else 
                        Console.WriteLine("total cost is {0}." , cost);

                break;
        }


        numValues = 1; 

















   Console.ReadLine();

    }//End Main()
}//End class Program

错误在这里：

switch((Number))

我想你是想给编号下点什么，但忘了。我想你的意思是：

int input;

while(!int.TryParse(Console.ReadLine(), ref input) || input < 1 || input > 3) {
    Console.WriteLine("Please enter a valid option!");
}

switch((Number)input)

int输入；
而（！int.TryParse（Console.ReadLine（），ref-input）| | input<1 | | input>3）{
WriteLine（“请输入有效选项！”）；
}
开关（（数字）输入）

如果要打开类型

编号

，则必须使用编号的实例。 例如：

switch ((Number)myNumber)

---

嗯，编译器是正确的（通常情况下也是如此）。。。在

开关

中，您认为您从何处获得测试值？枚举数{standard=1，express=2，same=3}；这是我想得到它的地方，但这是我第一次使用开关，我有点不知所措，因为这行定义了一个

enum

——这只是一些方便的整数名称；它没有获得任何东西的值AllRight，那么我从这里到哪里去呢？我希望他们能够输入数字1-3并转到那个案例看看@minitech answer从控制台读取输入OK，但是我在代码中把我的数字放在哪里，比如常量或int？你必须给变量

myNumber

赋值。如果它的类型是

Number

你不必在开关中强制转换它。好吧，我给它分配了一个值，但现在我被困在案例1（我分配的值）中。我如何设置它，以便它可以通过开关

var myNumber=（Number）int.Parse（Console.ReadLine（））向用户请求该值

好的，我修复了这部分代码，感谢您的快速响应