CODEWITHSUNDEEP
c#arrays
user951823
user951823

Reputation:

How I can convert string[] to list<int>?

How I can convert an array of strings to list of int? (without converting them one by one with my own method)

From searching in google I've seen methods named ToList() and ConvetAll() but I cant typed them, why is that?

What I've tried is:

new list<int>((int[])s.Split(','));

and I'm getting error that i cant convert string[] to int[] :(

Upvotes: 23

Views: 42931

Answers (10)

MB_18
MB_18

Reputation: 2321

You should use Array.ConvertAll method. Array.ConvertAll converts an array of one type to an array of another.

Here is the code:

string[] strArray = new string[] { "1", "2", "3" };
int[] intArray = Array.ConvertAll(strArray, int.Parse);

Upvotes: -1

lahiru madushan
lahiru madushan

Reputation: 49

use the following code:

var list = s.Select(Int32.Parse).ToList();

Upvotes: 2

ayush Kishore
ayush Kishore

Reputation: 11

public List<int > M1()
{
    string[] s =(file path));
    Array.Sort(s);
    var c = new List<int>();
    foreach(string x in s)
    {
        c.Add(Convert.ToInt32(x));
    }
    return c;
}

Upvotes: 1

Adam
Adam

Reputation: 411

For VB.NET, I had to do it in a loop

Dim myList As New List(Of Integer)
For Each item As String In s.Split(",")
    myList.Add(Val(item))
Next

May have been able to work it out with some inbuilt function but didn't want to spend too much time on it.

Upvotes: 1

Abdus Salam Azad
Abdus Salam Azad

Reputation: 5512

Try it:

 var selectedEditionIds = input.SelectedEditionIds.Split(",").ToArray()
                        .Where(i => !string.IsNullOrWhiteSpace(i) 
                         && int.TryParse(i,out int validNumber))
                        .Select(x=>int.Parse(x)).ToList();

Upvotes: 0

D Mishra
D Mishra

Reputation: 1578

Try Using

int x = 0; 

var intList= stringList.Where(str => int.TryParse(str, out x)).Select(str => x).ToList();

Upvotes: 1

unruledboy
unruledboy

Reputation: 2342

var s = "1,2,3,4,5,6,7,8,9";
var result = s.Split(',').Select(Convert.ToInt32).ToList();

Upvotes: 1

Jord&#227;o
Jord&#227;o

Reputation: 56537

Getting a hint from your code:

var listOfInts = s.Split(',').Select(Int32.Parse).ToList();

Upvotes: 19

kprobst
kprobst

Reputation: 16651

Assuming values is your list of strings:

int[] ints = new int[values.Count];

int counter = 0;
foreach (string s in values) {
    ints[counter++] = int.Parse(s);
}

Don't overcomplicate yourself :)

Upvotes: 0

Daniel T.
Daniel T.

Reputation: 38430

There's a two-step process involved here. The first is to convert the strings to an integer, then convert the array to a list. If you can use LINQ, the easiest way is to use:

stringArray.Select(x => Int32.Parse(x)).ToList();

Upvotes: 45

Related Questions