[Edit]

C# / .NET - sum first n integers from List

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Created by:

Dharman

518

In this article, we would like to show you how to sum first n integers from List in C#.

Quick solution:

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List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };
​
int n = 3;
​
int sum = numbers.Take(n).Sum(); // 6

Practical example

Edit

In this example, we use Take() method to take first 3 values from numbers array, then we use Sum() method to get sum of them.

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using System;
using System.Linq;
using System.Collections.Generic;
​
public class Program
{
    public static void Main()
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };
        int n = 3;
​
        int sum = numbers.Take(n).Sum();
​
        Console.WriteLine(sum);
    }
}