Question

I have an abstruct class with abstract method, the method param is generic.

this is the param type declaration:

public class StepHandlerWrapper<T> where T : BaseStepDataModel{...}

this is the parent abstract:
this is actually the problem, I want the StepHandlerWrapper generic type to be dynamic on each implementaion:

public abstract class BaseStepHandler{
  protected abstract HandlerResult Handle(StepHandlerWrapper<???????????????> );
}

these are 2 implementations Note the generic type on each one (different):

     public  class LoginHandler : BaseStepHandler {
          protected override HandlerResult Handle(StepHandlerWrapper<LoginStepOneDataModel> wrapper){...}
}



  public class RegularDemoAccountHandler : BaseStepHandler{
           protected override HandlerResult Handle(StepHandlerWrapper<RegularDemoAccountStepOneDataModel> wrapper){...}
  }   

how do I make each implementation of the abstract method to be different?

Answer 1

You need to make BaseStepHandler generic as well:

public abstract class BaseStepHandler<T> where T : BaseStepDataModel { 
    protected abstract HandlerResult Handle(StepHandlerWrapper<T> wrapper); 
} 

public class LoginHandler : BaseStepHandler<LoginStepOneDataModel> {
    protected override HandlerResult Handle(StepHandlerWrapper<LoginStepOneDataModel> wrapper) {...}
}