Split string, convert ToList() in one line

Question

I have a string that has numbers

string sNumbers = \"1,2,3,4,5\";

I can split it then convert it to List

Answer 1

var numbers = sNumbers.Split(',').Select(Int32.Parse).ToList();

Answer 2

You can also do it this way without the need of Linq:

List<int> numbers = new List<int>( Array.ConvertAll(sNumbers.Split(','), int.Parse) );

// Uses Linq
var numbers = Array.ConvertAll(sNumbers.Split(','), int.Parse).ToList();

Answer 3

Joze's way also need LINQ, ToList() is in System.Linq namespace.

You can convert Array to List without Linq by passing the array to List constructor:

List<int> numbers = new List<int>( Array.ConvertAll(sNumbers.Split(','), int.Parse) );

Answer 4

You can use this:

List<Int32> sNumberslst = sNumbers.Split(',').ConvertIntoIntList();

Answer 5

Better use int.TryParse to avoid exceptions;

var numbers = sNumbers
            .Split(',')
            .Where(x => int.TryParse(x, out _))
            .Select(int.Parse)
            .ToList();

Answer 6

You can use new C# 6.0 Language Features:

• replace delegate (s) => { return Convert.ToInt32(s); } with corresponding method group Convert.ToInt32
• replace redundant constructor call: new Converter<string, int>(Convert.ToInt32) with: Convert.ToInt32

The result will be:

var intList = new List<int>(Array.ConvertAll(sNumbers.Split(','), Convert.ToInt32));