Convert derived class to base class

c# polymorphism
Levitikon picture Levitikon · Nov 30, 2011 · Viewed 72.5k times · Source

I'm trying to refresh my memory but can't find answers with Google.

public class BaseClass
{
    public virtual void DoSomething()
    {
        Trace.Write("base class");
    }
}

public class DerivedClass : BaseClass
{
    public override void DoSomething()
    {
        Trace.Write("derived class");
    }
}

If I create an instance of derived class, how do I convert it to it's base class so that when DoSomething() is called, it uses the base class's method only?

A dynamic cast still calls the derived class's overridden method:

DerivedClass dc = new DerivedClass();

dc.DoSomething();

(dc as BaseClass).DoSomething();

Output: "derived class"

Answer

shazia picture shazia · Dec 13, 2013

Although this sounds irrational but it works 

 DerivedClass B = new DerivedClass();

BaseClass bc = JsonConvert.DeserializeObject<BaseClass>(JsonConvert.SerializeObject(B));

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