How to query list which is attached to an object c#

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Hi Friends,
I need to query a list which is attached to an object. Query is just to find the sum of initialValue. Since the class definition is little complex i am not able to do. please help
Below are my class structure

C#

public class Asset
    {
        public string href { get; set; }
        public int assetId { get; set; }
        public int sourceAssetId { get; set; }
        public string category { get; set; }
        public string name { get; set; }
        public Boolean isIncluded { get; set; }
        public int initialValue { get; set; }
        public int clientId { get; set; }
        public List<Portfolio> portfolioInfo { get; set; }
        public List<StockOption> stockOptionInfo { get; set; }
        public List<ConcentratedStock> concentratedStockInfo { get; set; }
    }
 public class Portfolio
    {
        public string portfolioType { get; set; }
        public List<PlanAccount> accounts { get; set; }
        public string taxStatus { get; set; }
        public Boolean isAmtApplicable { get; set; }
        public List<CurrentPortfolioAllocation> currentAllocation { get; set; }
        public List<TargetAllocation> targetAllocations { get; set; }
        public List<Fees> fees { get; set; }
        public List<PortfolioLinks> portfolioLinks { get; set; }
        public List<TrustDistributionDetails> trustDistributionDetails { get; set; }
        public List<EstateDetails> estateDetails { get; set; }
        public List<CarryForwards> carryForwards { get; set; }
    }
public class PlanAccount
    {
        public string accountSource { get; set; }
        public string accountSourceId { get; set; }
        public int officeNumber { get; set; }
        public int accountNumber { get; set; }
        public int faNumber { get; set; }
        public string clientSource { get; set; }
        public string clientSourceId { get; set; }
        public string accountType { get; set; }
        public int initialValue { get; set; }
        public List<PortfolioAllocation> allocations { get; set; }
        public Boolean attested { get; set; }
    }

My requirement is, from the PlanAccount class i need to sum up the initialValue attribute. I am expecting some LINQ approach

i need to Query Asset Object.

What I have tried:

i tried to surf in code project and net for the solution similar to my question. but not able to find a suitable answer from which i can start.

Updated
Looking for a linq query which support below code

C#

public static double PortfolioValue(Asset objasset)
        {
           double sum = 0;
           foreach(var lstpro in objasset.portfolioInfo)
           {
               foreach(var lstaccount in lstpro.accounts)
               {
                   sum+=lstaccount.initialValue;
               }
           }
           return sum;
        }

Posted 25-Feb-16 4:09am

jinesh sam

Updated 25-Feb-16 6:46am

v6

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Comments

BillWoodruff 25-Feb-16 11:05am

What happens when you run 'PortfolioValue method you show here ? Does it work ? If it works, Why do you want to rewrite this using Linq ?

jinesh sam 25-Feb-16 12:30pm

Yes its works. Initially that piece of code was not with me..since my linq approach fails i wrote that one.

2 solutions

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F-ES Sitecore · Accepted Answer · 2016-02-25T04:15:00

Solution 1

C#

List<PlanAccount> data = new List<PlanAccount>();

data.Add(new PlanAccount { initialValue = 1 });
data.Add(new PlanAccount { initialValue = 2 });
data.Add(new PlanAccount { initialValue = 3 });

// x is 6
int x = data.Sum(pa => pa.initialValue);

Updated:

C#

Asset asset = new Asset();
asset.portfolioInfo = new List<Portfolio>();
asset.portfolioInfo.Add(new Portfolio { accounts = new List<PlanAccount> { new PlanAccount { initialValue = 1 }, new PlanAccount { initialValue = 2 } } });
asset.portfolioInfo.Add(new Portfolio { accounts = new List<PlanAccount> { new PlanAccount { initialValue = 3 }, new PlanAccount { initialValue = 4 } } });

// x is 10
int x = asset.portfolioInfo.SelectMany(pi => pi.accounts).Sum(pa => pa.initialValue);

Posted 25-Feb-16 4:15am

F-ES Sitecore

Updated 25-Feb-16 4:40am

v2

Comments

jinesh sam 25-Feb-16 10:25am

Thanks for prompt response. but my requirement is little different. PlanAccount is attached to Portfolio and Portfolio with Asset.

i need to query an Asset object

F-ES Sitecore 25-Feb-16 10:40am

I've updated my solution

jinesh sam 25-Feb-16 10:50am

getting an error " does not contain a definition for 'SelectMany' ". what might be the reason

F-ES Sitecore 25-Feb-16 11:01am

You need this at the top of the file

using System.Linq;

jinesh sam 25-Feb-16 11:06am

Its working... thanks: a lot :)

BillWoodruff 26-Feb-16 1:49am

+5

BillWoodruff · Accepted Answer · 2016-02-25T06:46:00

In addition to SiteCore's solid solution here, I'd like to add that I think it's a good idea when you have complex, nested, Linq queries, and some of the values you are "lining up" to extract and manipulate might be null/undefined ... and you don't want to deal with those values ...

Let me illustrate:

int? total = null;

if (asset != null && asset.portfolioInfo != null)
{
    total =
        asset.portfolioInfo
            // eliminate null portfolioInfos
            .Where(pi => pi != null)
            .SelectMany(acc => acc.accounts)
            // eliminate empty accounts
            .Where(act => act.initialValue != null)
            .Sum(val => (int?) val.initialValue);
}

Think about a large complex dataset you want to query against; perhaps excluding a large number of instances/records would help reduce the "cost of using Linq ?