CODEWITHSUNDEEP
c#performancelinq
user3587180
user3587180

Reputation: 1397

If a method is inside a linq query would it be called multiple times?

If a method is inside a linq query would it be called multiple times? I can't test this because I don't have an IDE. I am learning linq and I use online c# compiler to run the program.

var List<Customer> CustomerList = (From c in GetCustomerList()
                                  Where c.Id > 1
                                  Select c).ToList()

Would this above code cause performance bottle necks since GetCustomerList method is inside the linq statement?

Upvotes: 2

Views: 290

Answers (1)

jdphenix
jdphenix

Reputation: 15435

That's a decent concern, but you're fine here.

LINQ query syntax is translated to method calls. In your case, 

var List<Customer> CustomerList = GetCustomerList()
    .Where(c => c.Id > 1)
    .ToList();

If you have doubts about it, add a call to Console.WriteLine inside GetCustomerList(), or take a look over the source for LINQ.

Upvotes: 1

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