覆盖 App.xaml.cs 中的方法值 [英] Overriding methods values in App.xaml.cs

问题描述

我正在开发 Windows 8 Phone 应用程序，这里有两件事，一个是库项目，另一个是普通应用程序，让我先解释一下我的代码:

I am working on Windows 8 Phone application,I have 2 things here one is Library project and other is normal app,Let me first explain my code:

图书馆项目

    class A
    {
      public static string empName ="ABC";
      public static int empID = 123;

      public virtual List<string> ListOfEmployees()
      {
           List<string> empList = new List<string>
           empList.Add("Adam");
           empList.Add("Eve");
           return empList;
      }

}

我在我的子项目中引用了图书馆项目，我的孩子和图书馆项目在两种不同的解决方案中.

I have referenced the library project in my child project, My child and Library project are in 2 different solution.

在子应用程序中

class Properties : A
{

 public void setValues(){
       empName ="ASDF"
       ListOfEmployees();
}
  public override List<string> ListOfEmployees()
          {
               List<string> empList = new List<string>
               empList.Add("Kyla");
               empList.Add("Sophia");
               return empList;
          }
      }

现在在每个子应用程序中，我们App.xaml.cs，这是每个项目的入口点.

Now in every Child Application we App.xaml.cs which is the entry point of each project.

在这个 App.xaml.cs 文件中，我正在创建这个 Properties 的对象并调用 setValues 方法.

In this App.xaml.cs file i am creating an object of this Properties and calling setValues method.

我在这里看到的只是静态变量值被覆盖，但方法没有被覆盖.为什么会这样?我在这里做错了什么吗?

What i see here is only static variables values are overridden but the methods are not overridden.Why so ? am i doing anything wrong here ?

我得到了 ASDF 并列出了亚当和夏娃作为输出

I get the ASDF and list with Adam and Eve as output

但我需要 ASDF 并列出 Kyla 和 Sophia 作为输出.

But i need ASDF and list with Kyla and Sophia as output.

如何实现?

编辑

我如何使用这些值:

在我的基地:

class XYZ : A

    {
      // now i can get empName as weel as the ListOfEmployees()
       string employeeName = null;

       public void bind()
       {
         employeeName = empName ; 
         ListOfEmployees(); // here is the bug where i always get Adam and Eve and not the Kyla and sophia
       }
    }

推荐答案

现在我明白了，你想从你的项目在你的库中调用覆盖值.

Now I understand, you want to call overriden values from your project in your library.

你不能用经典的 C# 机制来做到这一点，因为你需要依赖注入.一些类似的东西:

You cannot do that with classical C# mechanisms, for that you need dependency injection. Something along these lines:

// library
public interface IA
{
    List<string> ListOfEmployees();
}

public class ABase : IA
{
    public virtual List<string> ListOfEmployees() {}
}


public static class Repository
{
    private static IA _a;

    public static IA A
    {
        get { return _a = _a ?? new ABase(); }
        set { _a = value; }
    }
}

// in your app

class Properties : ABase
{
    public override List<string> ListOfEmployees() { /* ... */ }
}

Repository.A = new Properties();

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