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嘿伙计们，我不确定当我从主代码启动控制台时，它会打印两次不确定的项目，因为我根本没有循环方法：

        FoodProducts FoodProd1 = new FoodProducts("FP001", "Meat", 15.99, 200, 100, "Australia");
        FoodProducts FoodProd2 = new FoodProducts("FP002", "Bread", 2.99, 150, 50, "Italy");

        FoodProd1.Print();
        FoodProd2.Print();

class FoodProducts : Products
{

    private string origin;

    public FoodProducts(string id, string name, double price, int soldCount, int stockCount, string origin)
        : base(id, name, price, soldCount, stockCount)
    {
        this.origin = origin;
        //Need to find out why this code prints both lines and not in single line and why it starts from Product 2 when it is printed on the console
        PrintOrigin();
    }

    private string Origin
    {
        get { return origin; }
        set { origin = value; }
    }

    public void PrintOrigin()
    {
        base.Print();
        Console.WriteLine("Origin: {0}", this.Origin);

    }

从评论更新

Print()基类中定义的方法：

public void Print() { 
   Console.WriteLine("Product ID: {0}", this.id); 
   Console.WriteLine("Product Name: {0}", this.name);
   Console.WriteLine("Prodcut Price: {0}", this.price); 
   Console.WriteLine("Sold Counter: {0}", this.soldCount); 
   Console.WriteLine("Stock Count: {0}", this.stockCount); 
   Console.WriteLine(); 
   Console.ReadKey(); 
}
4

1 回答 1

6

真的不清楚你希望你的输出是什么样子。我根据您之前的问题拼凑了一个产品类。它的输出看起来像这样。

在此处输入图像描述

如您所见，它会像您提到的那样打印两次信息。不清楚的是您是否希望每次调用时都打印原点，如果是，则调用PrintOrigin方法而不是打印方法。否则，如果您只想在构造时打印原点，请从Print方法中调用PrintOrigin方法。

第一个示例调用 PrintOrigin 而不是 Print 并从构造函数中删除 PrintOrigin 语句。

在此处输入图像描述

如果要将方法调用保留为 Print 而不是 PrintOrigin，请声明基本方法 Virtual 并覆盖它。IE

class Program
{
    static void Main(string[] args)
    {
        FoodProducts FoodProd1 = new FoodProducts("FP001", "Meat", 15.99, 200, 100, "Australia");
        FoodProducts FoodProd2 = new FoodProducts("FP002", "Bread", 2.99, 150, 50, "Italy");

        FoodProd1.Print();
        FoodProd2.Print();

        Console.ReadLine();
    }
}

public class Products 
{ 
    string id; 
    string name; 
    double price; 
    int soldCount; 
    int stockCount; 

    public Products(string id, string name, double price,  
                      int soldCount, int stockCount) 
    { 
        this.id = id; 
        this.name = name; 
        this.price = price; 
        this.soldCount = soldCount; 
        this.stockCount = stockCount; 
    }

    public virtual void Print()
    {
        Console.WriteLine("Product ID: {0}", this.id);
        Console.WriteLine("Product Name: {0}", this.name);
        Console.WriteLine("Prodcut Price: {0}", this.price);
        Console.WriteLine("Sold Counter: {0}", this.soldCount);
        Console.WriteLine("Stock Count: {0}", this.stockCount);
        Console.WriteLine();
    } 

}

class FoodProducts : Products
{

    private string origin;

    public FoodProducts(string id, string name, double price, int soldCount, int stockCount, string origin)
        : base(id, name, price, soldCount, stockCount)
    {
        this.origin = origin;
    }

    private string Origin
    {
        get { return origin; }
        set { origin = value; }
    }

    public override void Print()
    {
        base.Print();
        Console.WriteLine("Origin: {0}", this.Origin);
    }

}
于 2012-08-30T02:17:41.767 回答