C#使用foreach访问层次结构的子成员

本文介绍了C#使用foreach访问层次结构的子成员的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试使Foreach适用于以下html剃须刀.最终，我希望ShoppingCart成为CartLines的列表.我想摆脱[0]语句，并使其可变.任何解决方案或最佳方法都会有所帮助.也可以随时编辑课程.

I am trying to make Foreach work for the html razor below. At the end of the day, I want ShoppingCart to be a list of CartLines. I want to get rid of the [0] statement, and make it variable. Any solution or optimal method would help. Feel free to edit the class also.

class ShoppingCart { public IList<CartLine> Items { get; } = new List<CartLine>(); public ShoppingCart() {} } public class CartLine { public int CartLineId { get; set; } public Product Product { get; set; } public int Quantity { get; set; } } @model IEnumerable<ShoppingCart> @foreach (var item in Model) { <tr> <td> @Html.DisplayFor(modelItem => item.Items[0].Product) </td>

推荐答案

遍历列表元素而非类:

class ShoppingCart { public IList<CartLine> Items { get; } = new List<CartLine>(); public ShoppingCart() {} } public class CartLine { public int CartLineId { get; set; } public Product Product { get; set; } public int Quantity { get; set; } } @model ShoppingCart @foreach (var item in Model.Items) { <tr> <td> @Html.DisplayFor(modelItem => item.Product) </td>