Comparing two lists "List" where Category is my class

Question

I have to find out the difference between two lists of class Category.

My Category class has these properties:

 public class Category
 {
    public int Id { get; set; }

    public string Title { get; set; }

    public bool IsQuantitative
    {
        get { return Products.Any(x => x.IsMultiPart); }
    }

    public List<Product> Products { get; set; }
    public string Image { get; set; }
    public string Description { get; set; }
}

"difference" is a broad term. What *specific* difference are you concerned with? The order of the items? The number of items? The values of certain properties in each object? Something else? — rory.ap, May 12 '16 at 12:03
How do you *define* the difference between the two lists? How do you define the difference between two instances of `Category` for that matter? You have to define what it is you *want* to do before you or anyone else can actually do it. — David, May 12 '16 at 12:04
if the value of any list item dis matches, it should point out me that specific item. Does that make sence — G.Sharma, May 12 '16 at 12:08
Great, so update your question to include that clarification. The comments is not the place for substantive clarifications. — rory.ap, May 12 '16 at 12:09

Mr.Sheep · Answer 1 · 2016-05-13T06:03:06.047

I would sort the two lists by Id first. Then run through it and compare the Objects. This is a good Object Comparer: https://www.nuget.org/packages/CompareNETObjects/

Here a little example:

            //Here you set the config like you want to have it compared
            ComparisonConfig comparisonConfig = new ComparisonConfig()
            {
                CompareChildren = true,
                CompareFields = true,
                CompareReadOnly = true,
                CompareProperties = true,
                MaxDifferences = 1,
                MaxByteArrayDifferences = 1
            };

            CompareLogic comparer = new CompareLogic() { Config = comparisonConfig };

            list1 = list1.OrderBy(x => x.Id).ToList();
            list2 = list2.OrderBy(x => x.Id).ToList();


            for (int i =0;i> list1.count;i++)
            {
                //Here you get a bool if the two Objects are Equal
                bool areEqual = comparer.Compare(list1[i], list2[i]).AreEqual;

                //Here you get a List of Differences Objects. It contains Values like "expected and "actual" etc.
                var differences = comparer.Compare(list1[i], list2[i]).Differences;

                //Here you handle Differences etc.
            }

You could improve this answer by showing a brief example – rory.ap May 12 '16 at 12:08 — rory.ap, May 12 '16 at 12:08

score 0 · Answer 2 · edited Jun 20 '20 at 09:12

0

Try this

var firstNotSecond = list1.Except(list2).ToList();

var secondNotFirst = list2.Except(list1).ToList();

link

edited Jun 20 '20 at 09:12

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answered May 12 '16 at 12:09

reza.cse08

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Comparing two lists "List" where Category is my class

2 Answers2