Question

I have a method requiring the following:

public static List<ParetoElement> 
     ParetoBuildBySum(List<KeyValuePair<string, double>> inputData)

I have the following linq query and would like those two anonymous values in a list of KeyValuePairs (string and double) to pass in.

var myHistoSource = from d in data 
                    select new 
                    { 
                       Type = d.Item_Expense_Type, 
                       Amount = Double.Parse(d.Item_Amount.ToString()) 
                    };

What’s the correct way?

Thanks

Answer 1

Just modify your query accordingly:

var myHistoSource = (
    from d in data 
    select new KeyValuePair<string, double>(d.Item_Expense_Type,
                                            Double.Parse(d.Item_Amount.ToString())
    ).ToList();

As an aside, your ParetoBuildBySum method should most likely accept an IEnumerable instead of a List as its parameter.