Question

Here’s the c# code that I have:

private double get806Fees (Loan loan)
{
    Loan.Fee.Items class806;
    foreach (Loan.Fee.Item currentFee in loan.Item.Fees)
    {
        if (currentFee.Classification == 806) class806.Add(currentFee);
    }

    // then down here I will return the sum of all items in class806
}

Can I do this using linq? If so, how? I have never used linq and i’ve read in several places that using linq instead of a foreach loop is faster… is this true?

Answer 1

Similar to some existing answers, but doing the projection in the query, to make the Sum call a lot simpler:

var sum = (from fee in loan.Items.Fees
           where fee.Classification == 806
           select fee.SomeValueToSum).Sum();