What are aggregate functions in C# LINQ?

What are aggregate functions in C# LINQ?

Aggregate functions in C# LINQ are methods that perform calculations on a collection of values and return a single value. Examples include Sum, Count, Average, Min, and Max.

Can you give me an example of using the Sum function?

Sure! Here's a simple example:

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

class Program
{
    static void Main()
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };
        int total = numbers.Sum();
        Console.WriteLine(total); // Output: 15
    }
}

What about the Average function?

The Average function calculates the mean of a collection. Here's an example:

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

class Program
{
    static void Main()
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };
        double average = numbers.Average();
        Console.WriteLine(average); // Output: 3
    }
}

Are there any other aggregate functions I should know about?

Yes, besides Sum and Average, you should also know about Count, Min, and Max. Each serves a specific purpose in data aggregation.