Sum with Projection : Sum « LINQ « C# / CSharp Tutorial






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

public class MainClass {
    public static void Main() {
        string[] words = { "cherry", "apple", "blueberry" };

        double totalChars = words.Sum(w => w.Length);

        Console.WriteLine("There are a total of {0} characters in these words.", totalChars);
    }
}








22.70.Sum
22.70.1.use Linq Sum to sum an array
22.70.2.use Sum to find the total of all of the numbers in an integer array.
22.70.3.Sum with Projection
22.70.4.Sum with integers
22.70.5.Sum with object property
22.70.6.Grouped Sum
22.70.7.Numeric Aggregates: Sum