Can somehow a method from base class return child class?

Question

I\'ll give an example, so you can better understand what i mean:

public class Base
{
      public Base Common()
      {
          return this;
      }
}

pub         


        

Answer 1

You could make Base generic and use the Curiously Repeating Template Pattern:

public class Base<T> where T : Base<T>
{
      public T Common()
      {
          return (T)this;
      }
}

public class XBase : Base<XBase>
{
     public XBase XMethod()
     {
          return this;
     }
}

Then you can just use:

var a = new XBase().Common().XMethod();

Answer 2

Have Base be abstract and not implementing XMethod and have the classes overriding XMethod should do it I guess?

public abstract class Base<T>
{
      public Base Common()
      {
          return this;
      }

     public abstract T XMethod();
}

public class XBase : Base<XBase>
{

     public override XBase XMethod()
     {
          return this;
     }
}