C# Enumerable Sum(IEnumerable>)

Description

Computes the sum of a sequence of nullable Double values.

Syntax


public static Nullable<double> Sum(
  this IEnumerable<Nullable<double>> source
)

Parameters

  • source - A sequence of nullable Double values to calculate the sum of.

Example

The following code example demonstrates how to use Sum(IEnumerable) to sum the values of a sequence.


//  w  w  w .  j a v  a  2 s  .co m
using System;
using System.Linq;
using System.Collections.Generic;
public class MainClass{
  public static void Main(String[] argv){  
 
    float?[] points = { null, 0, 9.83F, null, 1.0F, 3.46F, 8.1F };
 
    float? sum = points.Sum();
 
    Console.WriteLine("Total points earned: {0}", sum);

  }
}
 

The code above generates the following result.





















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