"Specified cast is not valid" when casting array of string to array of int

Question

I'm trying to use LINQ's cast method to cast an array of strings to an array of integers but getting the error: Specified cast is not valid, what am I doing wrong? Thanks!

string numbers = "1,2,3,4,5";
string[] nums = numbers.Split(',');

try
{
     var ff = nums.Cast<int>().ToArray();
}
catch (Exception ex)
{

}

See difference between Cast and Convert.

Gert Arnold
– Gert Arnold

2014-11-30 18:30:05 +00:00
Commented Nov 30, 2014 at 18:30 — Gert Arnold
– Gert Arnold, Commented Nov 30, 2014 at 18:30

Flat Eric · Accepted Answer · 2014-11-30 17:15:49Z

7

You cannot cast it, you must convert the values:

var ff = nums.Select(x => Convert.ToInt32(x)).ToArray();

answered Nov 30, 2014 at 17:15

Flat Eric

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Comments

Hagai Shahar · Accepted Answer · 2014-11-30 18:14:09Z

2

A bit shorter:

var ff = nums.Select(int.Parse).ToArray();

edited Nov 30, 2014 at 18:14

Hagai Shahar

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answered Nov 30, 2014 at 17:47

MUG4N

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