using System.Text;

​

public class BaseClass

{

     public new string ToString()

    {

         StringBuilder sb = new StringBuilder();

​

         foreach (var field in typeof(RequestStructure).GetFields())

         {

             //.....

             //.....

         }

         return sb.ToString() ;

    }

}

​

​

public class ChildClass:BaseClass

{

    class RequestStructure

    {

        //int,string....

    }

    RequestStructure instance = new RequestStructure();

}