C# 对象列表，如何获取属性的总和 [英] C# List of objects, how do I get the sum of a property

问题描述

我有一个对象列表.单个对象条目的一个属性是数量.我如何获得金额的总和?

I have a list of objects. One property of the individual object entry is amount. How do I get the sum of amount?

如果我的列表是 double 类型的，我可以这样做:

If my list was of type double I may be able to do something like this:

double total = myList.Sum();

但是我想要类似的东西，但是这个语法是不正确的.

However I want to something similar to this, yet this syntax is incorrect.

double total = myList.amount.Sum();

我应该如何去完成这个?如果可能，我希望使用 Sum 函数，而不是循环遍历和计算值.

How should I go about accomplishing this? I would love to use the Sum function if possible instead of looping through and calculating the value.

推荐答案

using System.Linq;

...

double total = myList.Sum(item => item.Amount);

这篇关于C# 对象列表，如何获取属性的总和的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！