using System;

using System.Linq.Expressions;

​

public class Program

{

    public static void Main()

    {

        Model m = new Model {Value = 47};

        var iRequest = Mapper.CreateRequest<RequestInt>().From(m);

        Console.WriteLine(iRequest.Data);

    }

}

​

​

public class Model

{

    public int Value {get;set;}

}

​

// For Syntax safety.

public interface IRequest

{

}

public interface IRequest<T> : IRequest

{

    T Data { get; set;}

}

​

public static class Mapper 

{ 

    public static TOut CreateRequest<TOut>() where TOut : IRequest, new() 

    {

        return new TOut();

    }

    public static IRequest<TDto> From<TDto,TModel>(this IRequest<TDto> request, TModel data)

    {

        request.Data=Map<TModel,TDto>(data);

        return request;

    }

    public static TOut Map<TIn,TOut>(TIn input)

    {

        // Only for this example, you need to provide your own implemenation.

        return (TOut)(object)((Model)(object)input).Value;

    }

​

}

​

public class RequestInt : IRequest<int>

{

    public int Data { get; set; }

}