How to optimize this code

Posted by phenevo on Stack Overflow See other posts from Stack Overflow or by phenevo
Published on 2010-03-17T16:16:16Z Indexed on 2010/03/17 16:21 UTC
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c#

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perfomance

Hi I class Car it has a property: string Code and 10 other.

common codes is list of strings(string[] ) cars a list of cars(Car[]) filteredListOfCars is List.

for (int index = 0; index < cars.Length; index++)
            {
                Car car = cars[index];
                if (commonCodes.Contains(car.Code))
                {
                    filteredListOfCars.Add(car);
                }
            }

Unfortunately this piece of methodexecutes too long.

I have about 50k records

How can I lower execution time??

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