Question

I am trying to check the int values in an array and based on that do some calculation but the code is not working below is the code:

string EventIds = getVoucher.EventIDs;

int[] array = EventIds.Split(',')
                      .Select(x => int.Parse(x, CultureInfo.InvariantCulture))
                      .ToArray();

if(array.ToString().Any(s => booking.EventID.ToString().Contains(s)))
{do something; } else { do something;}

Answer 1

array.ToString returns the string "System.Int32[]". Using Any with a string checks the predicate for each character in the string.

Assuming that booking.EventID is an int such as 1234, booking.EventID.ToString() returns the string "1234".

So your code checks if "1234" contains any character in "System.Int32[]" (here: true, because "1234" contains the '3' of "System.Int32[]").

---

You don’t say what the desired result is, but I guess you’re looking for something like this:

if (array.Any(s => booking.EventID == s))
{
    // ...
}

or

if (Array.IndexOf(array, booking.EventID) != -1)
{
    // ...
}