How to select distinct items from a list and return an list<object>

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Hi Friends,

I need to find distinct namesfrom a list and it should return List<Contribution>

Below is my list

C#

 List<LinearGrowth> lstlg = new List<LinearGrowth>()
{ new LinearGrowth {year=2016,endingvalue=23.5, cahflow=new List<Contribution>()
 {new Contribution{id=1,name="Salary"},
   new Contribution{id=2,name="Rent"},
   }},                                                                
 new LinearGrowth{year=2017,endingvalue=25.0,cahflow=new List<Contribution>()
 {new Contribution{id=1,name="Salary"},
   new Contribution{id=2,name="Rent"},
   new Contribution{id=3,name="interest"},
   }},
 new LinearGrowth{year=2018,endingvalue=29,cahflow=new List<Contribution>()
  {new Contribution{id=1,name="Salary"},
   new Contribution{id=2,name="Rent"},
   new Contribution{id=4,name="FD"},
   new Contribution{id=5,name="MutualFund"},
   }},
};

Result Should be
1 salary
2 Rent
3 Interest
4 FD
5 Mutual Fund

Please help

What I have tried:

var res = lstlg.SelectMany(cf => cf.cahflow)
.Select(d => new Contribution { id = d.id, name = d.name, })
.Distinct();

Posted 12-Mar-16 23:51pm

jinesh sam

Updated 13-Mar-16 7:23am

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1 solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

F-ES Sitecore · Answer 1 · 2016-03-13T07:23:00

Create your own comparison class

C#

public class MyComp : IEqualityComparer<Contribution>
{
    public bool Equals(Contribution x, Contribution y)
    {
        return (x.id == y.id);
    }

    public int GetHashCode(Contribution obj)
    {
        return obj.id.GetHashCode();
    }
}

Then use;

C#

List<Contribution> results = lstlg.SelectMany(l => l.cahflow).Distinct(new MyComp()).ToList();

How to select distinct items from a list and return an list<object>

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How to select distinct items from a list and return an list<object>

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