How can i use LINQ with property

Question

Hi I have a array list if type class "DtContract".

ArrayList listOfContracts_;

foreach (DTContract contract in listOfContracts_)
{
    if (contract.Engine != DTIsland.EngineType.AMADEUS && contract.Engine !=DTIsland.EngineType.SABRE)
                    continue; 
}

I want to do it through LINQ. I want to filter the Contract whose EngineType == AMADEUS && EngineType == SABRE. Please suggest how can i do it through Linq and get the result in List or in array list.

I am doing this to Optimize the code.

Please Help...

Do you want to optimize for speed or for readability? Because converting this `foreach` loop to a Linq query won't improve the speed. — Elian Ebbing, May 06 '11 at 14:22
Your are missing the constructor call and `listOfContracts_.add(contract)` in your code. What Elian ment is, that linq will internally perform the same, your currently do, and that there is nothing to optimize, from a performance perspective). — Nappy, May 06 '11 at 14:47
@Nappy: actually it just an example so i dont wright listOfContracts_.add(contract) — Shivi, May 06 '11 at 15:06

score 1 · Answer 1 · answered May 06 '11 at 14:26

1

var result = listOfContracts_.Where(contract=>contract.Engine != DTIsland.EngineType.AMADEUS && contract.Engine !=DTIsland.EngineType.SABRE).ToList();

answered May 06 '11 at 14:26

Ralph Shillington

19,493
20
85
150

score 0 · Answer 2 · answered May 06 '11 at 14:44

your foreach loop doen't do anything meaningful, what you are trying achieve?

If you want to use linq

listOfContracts_.OfType<DTContract>()
   .Where(contract => contract.Engine != DTIsland.EngineType.AMADEUS && 
                      contract.Engine != DTIsland.EngineType.SABRE);

How can i use LINQ with property

2 Answers2