How to use the simple version of C# commodity management system

This article mainly explains "how to use C#commodity management system simple version", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let Xiaobian take you to learn "how to use C#commodity management system simple version"!

Here, wrote a huge simple commodity management system, only one to add and view, just to give themselves hands-on!

Product id Name Quantity Price

Apple 100 1

1002 Lay's Potato Chips 20 2

Simple version of the commodity management system:

* Tip: Up to 5 items (fruit, cookware, cookies, etc.)

* Input 1 to add commodities;

* Input the information of each commodity through keyboard and store it.

* Enter 2 to enter the operation of querying commodities (displaying basic information of commodities);

This is the function of this project implementation, the following is the code implementation part.

The first part is to define a Goods class, give id, name, price and quantity, and construct

private int G_id; private string G_name; private int G_num; private float G_Price; //structure public Goods(int g_id, string g_name, int g_num, float g_Price) { G_id = g_id; G_name = g_name; G_num = g_num; G_Price = g_Price; } public int ID { get => G_id; set => G_id = value; } public string Name { get => G_name; set => G_name = value; } public int Num { get => G_num; set {//Determine whether the input value is greater than 0 and less than zero, and the parameter is directly defined as 0 if (value

< 0) { G_num = 0; } else G_num = value; } } public float Price { get =>

G_Price; set { if (value

< 0) { G_Price = 0; } else G_Price = value; } } public override string ToString() { return $"{ID}\t{Name}\t{Num}\t{Price}";//ToString方法的改写，从而得到4个参数 } 这一部分就是，代码的主要实现部分，因为一开始想用二维数组，然后试了一下，发现不可行，就改用了List的方法，发现这种非常简单，简易这样使用。 public static List GoodsList = new List(); public static void Login()//初始界面 { Console.WriteLine("输入1，进行添加商品的操作"); Console.WriteLine("输入2，进入查询商品的操作（显示商品的基本信息）"); P_Login();//调用P_login中的对1，2的判定 } public static void P_Login() { int n = Convert.ToInt32(Console.ReadLine()); switch (n) { case 1: AddLogin(); break; case 2: Show(); break; default: Console.WriteLine("你的输入错误"); Login(); break; } } public static void AddLogin() { //输入一定的商品后，调用查询中的Show //这里是用二维数组写入，和输出它，并不能存储，一定的数据 Console.WriteLine("总商品数："); int num = Convert.ToInt32(Console.ReadLine()); if (num == 0) { Console.WriteLine("你的输入为0，故返回初始界面"); Login(); } else if (num 0)//不能大于5 { //通过商品总数简历一个二维数组 //因为，定义的二维数组是string类型的所有会有BUG在 //储存不了 //string[,] good = new string[num, 4];//数组为四项分别为ID，名字，数量，价格 //for (int i = 0; i < num; i++)//建立一个表格 //{ // Console.Write("请输入ID：", i + 1); // good[i, 0] = Convert.ToString(Console.ReadLine()); // Console.Write("请输入名字："); // good[i, 1] = Convert.ToString(Console.ReadLine()); // Console.Write("请输入数量："); // good[i, 2] = Convert.ToString(Console.ReadLine()); // Console.Write("请输入价格："); // good[i, 3] = Convert.ToString(Console.ReadLine()); //} int a = 0,c=0; string b = ""; float d = 0; for (int i = 0; i < num; i++)//建立一个表格 { //对输入的数据不能判断，只会退出程序 Console.Write("请输入ID：", i + 1); a = Convert.ToInt32(Console.ReadLine()); Console.Write("请输入名字："); b = Convert.ToString(Console.ReadLine()); Console.Write("请输入数量："); c = Convert.ToInt32(Console.ReadLine()); Console.Write("请输入价格："); d = float.Parse(Console.ReadLine()); GoodsList.Add(new Goods(a, b, c, d)); } if (a >

= 0 && c >= 0 && d >= 0) { Console.WriteLine("按任意键查看商品列表"); Show();//调用展示的 } else { Console.WriteLine("输入有误，请重新输入"); AddLogin(); } //for (int i = 0; i < good.GetLength(0); i++) //{ // // for (int j = 0; j < good.GetLength(1); j++) // { // Console.Write(good[i, j] + "\t");//使其对齐，输出学生成绩 // } //} } else { Console.WriteLine("按任意键返回初始界面，按0退出程序,按1重新输入"); string e = Convert.ToString(Console.ReadLine()); if (e != "0" && e != "1") { Login(); } else if(e == "1") { P_Login();//重新开始 } else { Environment.Exit(0);//强制退出 } } } public static void Show() { Console.WriteLine(); Console.WriteLine(" 简易版商品管理系统"); Console.WriteLine("--------------------------"); Console.WriteLine("ID\t名字\t数量\t价格\t"); //这里用List储存了一个 GoodsList.Add(new Goods(12, "苹果", 123, 675)); foreach (var te in GoodsList) { Console.WriteLine(te+"\t"); } Console.WriteLine("按任意键返回初始界面，按0退出程序"); string e = Convert.ToString(Console.ReadLine()); if (e != "0") { Login();//返回初始界面 } else { Environment.Exit(0); }

只要在main函数中调用login()就可以对项目就行测试，下面是测试结果：

到此，相信大家对"怎么用C#商品管理系统简易版"有了更深的了解，不妨来实际操作一番吧!这里是网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习!