using System;

using System.Linq;

using System.Reflection;

public class Program

{

    public static void Main()

    {

        var instanceA = new Foo

        {

        Sample1="SomethingA",

        Sample3=2,

        Sample4=5,

​

        };

​

        var instanceB = new Foo

        {

        Sample1="SomethingB",

        Sample2=4,

        Sample3=4,

        Sample4=7,

        Sample5 = DateTime.Now,

        };

​

        var instanceC = new Foo

        {

        Sample1="SomethingC",

        Sample3=4,

        Sample4=5,

        Sample5 = DateTime.Now,

        };

​

​

        var result = AssignProperties(instanceA,instanceB,instanceC);

        result.Dump();

    }

    public static T AssignProperties<T>(params T[] sources)

    {

        var filteredPropertyTypes = new []{typeof(int),typeof(string),typeof(short),typeof(byte),typeof(DateTime),typeof(double)};

        var newInstance = (T)Activator.CreateInstance(typeof(T));

        foreach(var property in typeof(T).GetProperties().Where(x=>filteredPropertyTypes.Contains(x.PropertyType)))

        {

            var defaultValue = property.PropertyType.IsValueType ? Convert.ChangeType(Activator.CreateInstance(property.PropertyType),property.PropertyType) : null;

            if(sources.Any(x=>!Convert.ChangeType(property.GetValue(x),property.PropertyType).Equals(defaultValue)))

            {

                var newValue = property.GetValue(sources.First(x=>!Convert.ChangeType(property.GetValue(x),property.PropertyType).Equals(defaultValue)));

                property.SetValue(newInstance,newValue);

            }

        }

        return newInstance;

    }

}

​

​

public class Foo

{

public string Sample1 { get; set; }

    public int Sample2 { get; set; }

    public short Sample3 { get; set; }

    public byte Sample4 { get; set; }

    public DateTime Sample5 { get; set; }

    public double Sample6 { get; set; }

}

​