C# - Convert String array to String List

Question

string[] val_1;

List<string> val_2;

I'm trying to convert string array to string list. I need an effective way.

Both should be in string list format to compare both.

_"Both should be in string List format to compare both"_ Why you can't compare a list with an array? For example: `val_1.SequenceEqual(val_2)`. — Tim Schmelter, Nov 26 '18 at 14:21
@PrasadTelkikar that specific question is about an Array object, but it still definitely is a duplicate. — Timmeh, Nov 26 '18 at 14:27

score 1 · Accepted Answer · answered Nov 26 '18 at 14:22

There are two options.

Using LINQ ToList() extension method - add using System.Linq; to the top of your source file and then do:

var list = array.ToList();

Second option is to directly initialize the list via the constructor:

var list = new List<string>(array);

There is no difference in performance between these two approaches, both will take linear time relative to the number of items in the array (O(N)).

score 0 · Answer 2 · answered Nov 26 '18 at 14:22

0

Use System.Linq's ToList method:

val_2 = val_1.ToList();

Make sure val_1 is initialized though!

answered Nov 26 '18 at 14:22

Timmeh

2 Answers2