覆盖在子类C＃

Question

设置属性的一部分从基抽象类我有一个抽象类甲作为我的基类从类乙导出。我怎么能覆盖set的DrawingType属性在子类乙。

public abstract class A 
{ 
    protected DrawingType m_type; 

    public DrawingType Type 
    { 
     get { return m_type; } 
     set { m_type = value} 
    } 
} 

public B : A 
{ 
    // I want to override the 'set' of DrawingType property here. 
} 

Answer 1

你的类应该如下所示：

abstract class A 
{ 
    protected DrawingType m_type; 

    protected virtual DrawingType Type 
    { 
     get { return m_type; } 
     set { m_type = value; } 
    } 
} 

class B : A 
{ 
    protected override DrawingType Type 
    { 
     get 
     { 
      return m_type; 
     } 
     set 
     { 
      m_type = //custom logic goes here 
     } 
    } 
} 

如果基类没有实现，你可以使用

abstract class A 
{ 
    protected DrawingType m_type; 

    protected abstract DrawingType Type { get; set; } 
}