How to Calculate the Sum of a Property in a C# List of Objects?

Summing a Property in a C# List of Objects: A Simple Guide

Working with lists of custom objects often necessitates calculating the sum of a particular property across all objects. This tutorial demonstrates how to efficiently achieve this using C#'s LINQ capabilities.

Steps:

1. Include the LINQ Namespace:

   Begin by importing the necessary namespace:

   <code class="language-csharp">using System.Linq;</code>

2. Employ the Sum() Extension Method:

   The Sum() method, part of LINQ, provides a concise way to sum values. For object lists, a lambda expression selects the property to be summed.

   <code class="language-csharp">double total = myList.Sum(item => item.PropertyToSum);</code>

   Replace myList with your list of objects and PropertyToSum with the name of the property you wish to sum. The lambda expression item => item.PropertyToSum extracts the specified property value from each object.

3. Store the Result:

   The Sum() method returns a double representing the total. Assign this to a variable (e.g., total) for further use.

This streamlined approach simplifies summing object properties, enabling efficient data aggregation within your C# applications.

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