在电商产品模块中必经的一个环节是:当选择某一个产品类别,动态生成该类别下的所有属性和属性项,这些属性项有些是以DropDownList的形式存在,有些是以CheckBoxList的形式存在.接着,把CheckBoxList的选中项组合生成产品SKU项. 本系列将在ASP.NET MVC中实现以上功能.但本篇,先在控制台实现属性值的笛卡尔乘积. 关于属性的类: public class Prop { public int Id { get; set; } public string Name {…
提示:保存后才提示错误信息 自定义验证特性,继承ValidationAttribute并实现IClientValidatable 这次重写了基类的IsValid()方法的另外一个重载,因为该重载包含了验证上下文ValidationContext,从中可以获取属性及属性值. using System.ComponentModel.DataAnnotations; using System.Globalization; using System.Web.Mvc; namespace MvcValid…
// 引用 using Microsoft.EntityFrameworkCore; // 摘要: // Specifies related entities to include in the query results. The navigation property // to be included is specified starting with the type of entity being queried (TEntity). // Further navigation pr…
This lesson explains how to set rules for business classes and their properties. These rules are validated when an end-user executes a specified operation. This lesson will guide you through implementation of a rule that requires that the Position.Ti…
This lesson explains how to set rules for business classes and their properties. These rules are validated when an end-user executes a specified operation. This lesson will guide you through implementation of a rule that requires that the Position.Ti…
