# Compare two list row by row and return boolen value [Resolved]

Posted by Allemahesh under LINQ on 10/28/2015 | Points: 10 | Views : 408 | Status : [Member] [MVP] | Replies : 4
I have a two IList say

`List<Person> persons1 = new List<Person>{       new Person {Id = 1, Name = "Person 1"},       new Person {Id = 2, Name = "Person 2"},       new Person {Id = 3, Name = "Person 3"},       new Person {Id = 4, Name = "Person 4"}};List<Person> persons2 = new List<Person>{       new Person {Id = 1, Name = "Person 1"},       new Person {Id = 8, Name = "Person 8"},       new Person {Id = 3, Name = "Person 3"},       new Person {Id = 4, Name = "Person 5"},};`

If you see these two lists, 2 records are same and 2 are different. Now I want to loop these list and return true or false if bother are same.
For example:

new Person {Id = 1, Name = "Person 1"} == new Person {Id = 1, Name = "Person 1"} => true
new Person {Id = 2, Name = "Person 2"} == new Person {Id = 8, Name = "Person 8"} => false
new Person {Id = 3, Name = "Person 3"} == new Person {Id = 3, Name = "Person 3"} => true
new Person {Id = 4, Name = "Person 4"} == new Person {Id = 4, Name = "Person 5"} => false

Here I will 4 results with 2 are true and 2 are false.
Please help to do this using LINQ query.

#### Responses

Posted by: Sheonarayan on: 10/28/2015 [Administrator] HonoraryPlatinum | Points: 50
 0 Assuming both List are of same length. In this case, first take the length of the list.`var listLength = persons1.Count();for (int i = 0; i < listLength; i++){ if (persons1[i].PropertyName ==persons2[i].PropertyName) { // equals } else { // this item is not equal }}` This is little lengthy way but I think in your requirement where you need to get true/false for each item in the collection, this would fit best.ThanksRegards, Sheo Narayan http://www.dotnetfunda.comAllemahesh, if this helps please login to Mark As Answer. | Alert Moderator
Posted by: Allemahesh on: 10/28/2015 [Member] [MVP] Silver | Points: 25
 0 Thank you. But I want to do it with LINQ query. Can you help me.Allemahesh, if this helps please login to Mark As Answer. | Alert Moderator
Posted by: Rajnilari2015 on: 10/29/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 25
 0 Try this ```persons1.Select((x, i) => new { RowNum = i + 1, Id = x.Id, Name = x.Name }) .Join(persons2.Select((x, i) => new { RowNum = i + 1, Id = x.Id, Name = x.Name }), a => a.RowNum, b => b.RowNum, (a, b) => new { Person1 = a, Person2 = b}) .Select(p => p.Person1.Id == p.Person2.Id && p.Person1.Name == p.Person2.Name) .ToList() .ForEach(i => Console.WriteLine(i)); ``` -- Thanks & Regards, RNA TeamAllemahesh, if this helps please login to Mark As Answer. | Alert Moderator
Posted by: Rajnilari2015 on: 10/30/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 25
 0 B/T, what happen to your question http://www.dotnetfunda.com/forums/show/20736/show-some-content-of-textbox-as-using-jquery The solution that we provided didn't worked...right ? Have some courtesy , by responding to the forums thread so that when another user have a similar kind of doubt we can point the same to him/her. That will save the time of a new discussion for an already old similar kind of discussion. I hope my words will be granted in a constructive way.-- Thanks & Regards, RNA TeamAllemahesh, if this helps please login to Mark As Answer. | Alert Moderator
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