using System;

    public interface IImportModel

    {

    }

​

    public class MaterialImportModel : IImportModel

    {

        public string MaterialName { get; set; }

    }

​

    public class CompanyImportModel : IImportModel

    {

        public string CompanyName { get; set; }

    }

​

​

    public interface IImportProcessor<in TModel> where TModel : IImportModel

    {

        void Process(TModel model);

    }

    public class MaterialImportProccessor : IImportProcessor<MaterialImportModel>

    { 

        public void Process(MaterialImportModel model)

        {

            Console.WriteLine("Material Processed Successfully!Material Name: " + model.MaterialName);

        }

    }

​

    public class CompaniesImportProccessor : IImportProcessor<CompanyImportModel>

    {

        public void Process(CompanyImportModel model)

        {

            Console.WriteLine("Company Processed Successfully!Company Name: " + model.CompanyName);

        }

    }

​

    public enum Parameter

    {

        Materials,

        Companies

    }

​

    public interface IImportProcessorFactory 

    {

        dynamic Get(Parameter parameter);

    }

​

    public class ImportProcessorFactory : IImportProcessorFactory

    {

        public dynamic Get(Parameter parameter)

        { 

            switch (parameter)

            {

                case Parameter.Materials:

                    return new MaterialImportProccessor() ; 

​

                case Parameter.Companies:

                    return new CompaniesImportProccessor();

                default:

                    return null;

            }

        }

    }

​

​

​

    public class Program

    {

        public Program()

        {

            var factory = new ImportProcessorFactory();

            var material = factory.Get(Parameter.Materials);

            var company = factory.Get(Parameter.Companies);

​

            var model = new MaterialImportModel();

            model.MaterialName = "My Material";

            material.Process(model);

            var cModel = new CompanyImportModel();

            cModel.CompanyName = "My Company";

            company.Process(cModel);

        }

​

​

​

        public static void Main()

        {

            var program = new Program();

​

            Console.WriteLine("Hello World");

            Console.ReadLine();

        }

    }