Overriding methods values in App.xaml.cs

问题

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:

In Library project

    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;
      }

}

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

In Child application

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;
          }
      }

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

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

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 ?

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

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

How to achieve this ?

EDIT

How i am using these values:

In my Base :

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
       }
    }

回答1:

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

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();

回答2:

Change the override keyword to new and you'll get the behaviour you're after. Check out this link for more information on when to use which.

来源：https://stackoverflow.com/questions/22060464/overriding-methods-values-in-app-xaml-cs

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wpf

windows-phone-8

windows-phone

class-library