foreach语句无法对类型为变量的变量进行操作 [英] foreach statement cannot operate on variables of type

问题描述

朋友 ！
我有2个 表 学生 和 HistoricoEscolar ，我需要 将 记录 插入表中 要做 HistoricoEscolar 还 更新 学生 表 .

我在表中 下面的代码中添加了 HistoricoEscolars

Friends!
I have 2 tables Student and HistoricoEscolar, I needthat whena recordis insertedin the tabledoHistoricoEscolaralsoupdatetheStudent table.

I addedthe code belowin TableHistoricoEscolars

部分无效的HistoricoEscolars_Inserting(HistoricoEscolar实体)
       {
           foreach(实体中的Aluno权限.AlunoNome)
           {
                             detalhes.HoraAulaInio =实体.HoraInicioAula;
           }  

partial void HistoricoEscolars_Inserting(HistoricoEscolar entity)
        {
            foreach (Aluno detalhes in entity.AlunoNome)
            {
                detalhes.HoraAulaInio = entity.HoraInicioAula;
            }  

我遵循了 一个例子 我在上找到了 网站 MSND ， 但是 是 错误 ， 以下消息 显示 :
foreach 声明 不能 操作 上 变量 类型 ' LinghtSwitchApplication.Aluno ' 因为 ' LightSwitchApplication.Aluno '没有 包含 a 公共 定义 GetEnumerator ' .

您想 帮助朋友 解决 这个问题 .

I followed an example I found on the site MSND, however is error, the following message is displayed:
foreach statement can not operate on variables of type 'LinghtSwitchApplication.Aluno' because 'LightSwitchApplication.Aluno' does not contain a public definition for 'GetEnumerator'.

Would you like to help friends to solve this problem.

推荐答案

实体上的AlunoNome属性不是集合属性，而是标量.这就是为什么您不能迭代它的原因.确保涉及此属性的关系是正确的；您可能有一对多关系，但相反 您真正想要的东西.

The AlunoNome property on the entity is not a collection property but is scalar. That's why you cannot iterate it. Make sure that your relationship involving this property is correct; you likely have a One-To-Many relationship, but have it the reverse of what you actually want.

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