Question 3 Class

check_prop.cs

using System;
using System.Collections.Generic;

public delegate void FoundString(string found);

public class WhatDoIDo
{
    private ILogger _logger = new Logger();
    private readonly List<object> _objects = new List<object>();
    public event FoundString Found;
    public List<object> Do(List<object> source, string name)
    {

        foreach (var obj in source)
        {
            var type = obj.GetType();
            var sourceProperties = type.GetProperties();
            var found = false;
            foreach (var sourceProperty in sourceProperties)
            {
                if (sourceProperty.Name == name)
                {
                    found = true;
                    Found(name);
                }
            }
            if (found)
            {
                if (!Has(obj, name))
                {
                    _objects.Add(obj);
                }
            }
        }
        return _objects;
    }

    private bool Has(object sourceItem, string propertyName)
    {
        if (sourceItem == null)
        {
            throw new Exception();

            _logger.Log("source is null");

        }

        Boolean rv = false;
        foreach (var obj in _objects)
        {
            var objType = obj.GetType();
            var objPs = objType.GetProperties();
            foreach (var pi in objPs)
            {
                if (pi.Name == propertyName)
                {
                    var sourceItemType = sourceItem.GetType();
                    var sourceObjPs = sourceItemType.GetProperties();
                    foreach (var itemPs in sourceObjPs)
                    {
                        if (itemPs.Name == propertyName)
                        {
                            if (itemPs.GetValue(sourceItem, null).ToString() == pi.GetValue(obj,
                            null).ToString())
                            {
                                rv = true;
                            }
                        }
                    }
                }
            }
        }
        return rv;
    }
}