using System;

using System.Linq;

using System.Collections.Generic;

using System.Reflection;

​

​

namespace VendorNamespace1

{

    public class Error

    {

        public string Message { get; set; }

        public int ErrorNumber { get; set; } 

    }

}

​

namespace VendorNamespace2

{

    public class Error

    {

        public string Message { get; set; }

        public int ErrorNumber { get; set; } 

    }

}

​

​

​

namespace Example

{

    public class Error

    {

        public string Message { get; private set; }

        public int ErrorNumber { get; private set; } 

​

        public Error(object vendorError) 

        {

            var t = vendorError.GetType();

            foreach (var source in t.GetProperties(BindingFlags.Instance | BindingFlags.Public))

            {

                foreach (var dest in typeof(Error).GetProperties(BindingFlags.Instance | BindingFlags.Public))

                {

                    if (dest.Name != source.Name) continue;

                    if (dest.PropertyType != source.PropertyType) continue;

                    dest.SetValue(this, source.GetValue(vendorError, null));

                }

            }

        }

    }

    public class Program

    {

        public static void Main()

        {

            var e1 = new VendorNamespace1.Error

            {

                ErrorNumber = 1,

                Message = "One"

            };

            var e2 = new VendorNamespace2.Error

            {

                ErrorNumber = 2,

                Message = "Two"

            };

            var vendorErrorList = new List<object> { e1, e2 };

            var myErrorList = vendorErrorList.Select( e => new Error(e) );

            foreach (var e in myErrorList)

            {

                Console.WriteLine("Number {0}  Message {1}", e.ErrorNumber, e.Message);

            }

        }

    }

}