LINQ | How to find the sum of the given Sequence? - GeeksforGeeks

21 May, 2019
In LINQ, you can find the sum of the given numeric elements by using the Sum() method. This method calculates the sum of the numeric value present in the given sequence. It does not support query syntax in C#, but it supports in VB.NET. It is available in both Enumerable and Queryable classes in C#. It can work with nullable, non-nullable decimal, double, floats, int, etc. values.
Example 1:
// C# program to illustrate how to// find the sum of the given sequenceusing System;using System.Linq;  class GFG {      // Main Method    static public void Main()    {          int[] sequence = { 20, 30, 50, 78, 90,                           79, 89, 99, 97, 29 };          // Display the sequence        Console.WriteLine("The Sequence is: ");          foreach(int s in sequence)        {            Console.WriteLine(s);        }          // Finding sum of the given sequence        // Using Sum function        int result = sequence.Sum();        Console.WriteLine("The sum of the given "                              + "sequence is: {0}",                          result);    }}
The Sequence is: 
20
30
50
78
90
79
89
99
97
29
The sum of the given sequence is: 661

Example 2:
// C# program to find the sum// of the salary of the employeeusing System;using System.Linq;using System.Collections.Generic;  // Employee detailspublic class employee {    public int emp_id    {        get;        set;    }    public string emp_name    {        get;        set;    }    public string emp_gender    {        get;        set;    }    public string emp_hire_date    {        get;        set;    }    public int emp_salary    {        get;        set;    }}  class GFG {      // Main method    static public void Main()    {        List<employee> emp = new List<employee>() {            new employee() { emp_id = 209, emp_name = "Anjita", emp_gender = "Female", emp_hire_date = "12/3/2017", emp_salary = 20000 },                new employee() { emp_id = 210, emp_name = "Soniya", emp_gender = "Female", emp_hire_date = "22/4/2018", emp_salary = 30000 },                new employee() { emp_id = 211, emp_name = "Rohit", emp_gender = "Male", emp_hire_date = "3/5/2016", emp_salary = 40000 },                new employee() { emp_id = 212, emp_name = "Supriya", emp_gender = "Female", emp_hire_date = "4/8/2017", emp_salary = 40000 },                new employee() { emp_id = 213, emp_name = "Anil", emp_gender = "Male", emp_hire_date = "12/1/2016", emp_salary = 40000 },                new employee() { emp_id = 214, emp_name = "Anju", emp_gender = "Female", emp_hire_date = "17/6/2015", emp_salary = 50000 },        };          // Find the sum of the salary        // Using Sum () method        var res = emp.Sum(a = > a.emp_salary);        Console.WriteLine("Total salary of the Employees: {0}", res);    }}
Total salary of the Employees: 220000

CSharp LINQ
C#
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