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C# Querying With LINQ Now You're Querying Using Query Syntax

LINQ Query

Create a public method in the NumberAnalysis class called NumbersGreaterThanFive that returns an IEnumerable<int>.

Inside the method, use LINQ query syntax to return only the numbers in the _numbers field that are greater than 5.

Can someone tell me what's wrong with my code:

using System.Collections.Generic; using System.Linq;

namespace Treehouse.CodeChallenges { public class NumberAnalysis { private List<int> _numbers; public NumberAnalysis() { _numbers = new List<int> { 2, 4, 6, 8, 10 }; } public List<int> NumbersGreaterThanFive = new List<int>() {
IEnumerable<int> NumbersGreaterThanFive = from n in _numbers where n>5 select n; } } }

NumberAnalysis.cs
using System.Collections.Generic;
using System.Linq;

namespace Treehouse.CodeChallenges
{
    public class NumberAnalysis
    {
        private List<int> _numbers;
        public NumberAnalysis()
        {
            _numbers = new List<int> { 2, 4, 6, 8, 10 };
        }
        public List<int> NumbersGreaterThanFive = new List<int>()
        {            
            IEnumerable<int> NumbersGreaterThanFive = from n in _numbers
                where n>5
                select n;
        }
    }
}

1 Answer

Steven Parker
Steven Parker
231,198 Points

You're close, but:

  • the method definition syntax should not have an assignment operator (or anything between it and the ()'s)
  • the type is defined here as List<int>, but the instructions ask for IEnumerable<int>
  • the method needs to return the result.