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.

Answer 1

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" };