merging two list in c# .net

Question

i am trying to merge two list as below

Let list 1 contains id,name,age and list two contains int,varchar,varchar

My final out put must be id int,name varchar,age varchar

I am tried with out using linq or lamda expression

but i need this execution through it.

What is the relationship between the two lists (i.e. what do the two lists join on)? Do they both have an `id` column or similar? — RB., Feb 14 '13 at 10:53
What type of List? List of string that contains those values? List of some custom entities? This question is very vague. — Leri, Feb 14 '13 at 10:54
Why the linq is not an option ? Because it is ideal sulotion for your problem — VidasV, Feb 14 '13 at 10:56
In fact, reading your question again, it sounds like you're trying to Union the two lists, not merge them. Please be *very* precise when editing your question to explain your requirements. — RB., Feb 14 '13 at 10:56
If you're very clear about your requirements, you can avoid the downvotes (and get better answers). Please improve your questions by using the ["edit"](http://stackoverflow.com/posts/14873129/edit) feature. — nawfal, Feb 14 '13 at 18:05

Daniel Hilgarth · Accepted Answer · 2013-02-14T11:03:29.533

My answer assumes that both lists contain strings, that the number of items is the same in both lists and that they are already correctly ordered.

var result = list1.Select((x, i) => x + " " + list2[i]).ToList();

Alternatively, you can use Enumerable.Zip:

var result = list1.Zip(list2, (x, y) => x + " " + y).ToList();

Sample input:

var list1 = new List<string> { "id", "name", "age" };
var list2 = new List<string> { "int", "varchar", "varchar" };

Output:

var result = new List<string> { "id int", "name varchar", "age varchar" };

score 3 · Answer 2 · answered Feb 14 '13 at 10:54

3

Use Zip, e.g. (to get matches as Tuples)

listOne.Zip(listTwo, Tuple.Create);

answered Feb 14 '13 at 10:54

skolima

2 Answers2