​

public enum ExportFormat { Xml, Json, Pdf }

​

public class ExportResults { 

    //...

}

​

public interface IExporter 

{

    ExportResults Export(object entity);

}

​

public class XmlExporter 

{

    public ExportResults Export(object entity) 

    {

        ExportResults result = null;

        // Exporting to XML

        return result;

    }

}

​

public class PdfExporter 

{

    public ExportResults Export(object entity) 

    {

        ExportResults result = null;

        // Exporting to PDF

        return result;

    }

}

​

//-------------------------------------------------------------

​

public class Customer 

{

    public ExportResults Export(ExportFormat format) 

    {

        IExporter exporter = null;

        // TODO: how to resolve the 'exporter' object using DI?

​

        return exporter.Export(this);

    }    

}