C# Sum Object Values

In C#, we can easily sum up the values of objects by using LINQ's Sum() method. This method takes a lambda expression that specifies the property to sum. Here's an example:

List<Employee> employees = new List<Employee>
{
    new Employee { Name = "John", Salary = 50000 },
    new Employee { Name = "Mary", Salary = 60000 },
    new Employee { Name = "Bob", Salary = 40000 }
};

var totalSalary = employees.Sum(e => e.Salary);
Console.WriteLine("Total Salary: " + totalSalary);

This code creates a list of Employee objects and assigns it to a variable called employees. It then uses the Sum() method to sum up the Salary property of each Employee object in the list. Finally, it prints out the total salary.

In this example, we're using a lambda expression as the argument to the Sum() method. The lambda expression specifies which property to sum, in this case Salary. If our Employee class had a different property we wanted to sum, we could simply change the lambda expression to reference that property instead.

Here's the Employee class used in this example:

public class Employee
{
    public string Name { get; set; }
    public int Salary { get; set; }
}

As you can see, it's a very simple class with just two properties: Name and Salary.

In conclusion, the Sum() method in C# makes it easy and straightforward to sum up values of objects. With just a few lines of code, we can sum up any property we want using a lambda expression.