如何在C＃中实现属性和方法？ [英] How to implement properties and method in C#?

问题描述

我已经注释掉了属性及其方法。我如何在接口中实现这些，我也在每个类中注释掉了各个属性。这是来自Begining visual c＃2012的UML图。

I have commented out the properties and its method. How do I implement those in the interfaces and I also have commented out individual properties in each class. This is from UML diagram from Begining visual c#2012.

namespace Interfaces
{
    interface IHotDrink
    {
        void Description();

       // string Instance { get; set; }
      //  /int Sugar { get; set; }
        //int AddSugar { get; set; }
        //string Milk { get; set; }
    }
  public class CupOfCoffee: IHotDrink
    { // string BeanType;
        public void Description()
      {
          Console.WriteLine("Hello, what kind of coffee would you like to have?");
      }


    class CupOfTea: IHotDrink
    { // string LeafType;
       public void Description()
        {
            Console.WriteLine("What kind of tea would you like to have?");
        }

    }
    class Program
    {
       static void Main()
        {
            CupOfCoffee C = new CupOfCoffee();
            CupOfTea T = new CupOfTea();

            C.Description();
            T.Description();
        }
    }
}}

推荐答案

无法在接口中实现属性。在界面上定义它。

can't implement properties in interface. define it on interface.

public interface IMyInterface
{
   string Instance 
      {
          get;
          set;
      }
}

然后在实施课程中，你需要实现它

Then in the implementing class, you need to implement it

class MyClass: IMyInterface{
    private string instance ;

    public string Instance {
        get {
            return this.instance;
        }
        set {
            this.instance= value;
        }
    }
}

如果子类的所有属性接口都相同，那么你可以试试 abstract 类如下

if all the property interfaces are same for the sub classes then you can try with abstract class like below

public abstract class MyAbstractClass
{
    public string Instance { get; set; }
    public int Sugar { get; set; }
    public int AddSugar { get; set; }
    public string Milk { get; set; }

    public abstract void Description();
}

public class MyClass : MyAbstractClass
{
    public override void Description()
    {
        Console.WriteLine("Hello, what kind of coffee would you like to have?");
    }
}

您无法在界面内实现任何内容。

界面仅包含方法签名需要在别处实现的属性。



如果要使用需要继承的部分实现的代码，请使用抽象类。

You cannot implement anything inside an interface.
An interface contains only method signatures and properties that need to be implemented elsewhere.

If you want to use a partially implemented code that needs to be inherited, use an abstract class.

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