覆盖子类C＃中的基础抽象类的属性的一部分

Question

I have an abstract class A as my base class from which class B derives. How can I override the set of DrawingType property in the sub-class B .

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

Your classes should look like the following:

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
        }
    }
}

If the base class doesn't have an implementation you can use

abstract class A
{
    protected DrawingType m_type;

    protected abstract DrawingType Type { get; set; }
}