Convert derived class to base class

Question

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

public class BaseClass
{
    public virtual void DoSomething()
    {
        Trace.Writ         


        

Answer 1

Although this sounds irrational but it works

 DerivedClass B = new DerivedClass();

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