Question

我想访问类内部列表中的类成员值。我的课程看起来像这样。 SureViewEvents类包含传入警报的父级详细信息，SureViewEventDetails是警报的详细值。我想使用LINQ循环遍历类SureViewEvents并循环遍历详细信息行（如果有的话）。

我该怎么做呢？

public class SureViewEvents
{
    public string EventId { get; set; }
    public string GroupId { get; set; }
    public string DateTimeCreated { get; set; }
    public string GroupTitle { get; set; }
    public string EventTitle { get; set; }
    public string SubscriberId { get; set; }
    public bool Closed { get; set; }

    public List<SureViewEventDetails> Details { get; set; }
}

//EventID|EventRecordID|CreatedDate|EventRecordTypeID|Details|Input1|Input2|EventCode|SubscriberID|EventTitle|SerialNo
public class SureViewEventDetails
{
    public string EventId { get; set; }
    public string EventRecordID { get; set; }
    public string CreateDate { get; set; }
    public string EventRecordTypeID { get; set; }
    public string Details { get; set; }
    public string Area { get; set; }
    public string Zone { get; set; }
    public string EventCode { get; set; }
    public string SubscriberID { get; set; }
    public string EventTitle { get; set; }
    public int SerialNo { get; set; }
    public bool Handled { get; set; }
}

我可以使用以下方法检索父级别值，但我不确定如何访问使用此结构填充的详细信息。任何建议表示赞赏！

var activeEvents = (from sve in m_sureViewEvents 
                    select sve).ToList();

lock (m_driverLock)
{
    foreach (var activeEvent in activeEvents)
    {
        if (activeEvent.Closed == false)
        {
            m_fepConnector.HandleAlarms();
            DownloadZipArchive(activeEvent.EventId);
            CloseSureViewEvent(activeEvent.EventId);
        }
    }
}

Answer 1

您可以使用SelectMany选择所有详细信息：

foreach (var details in activeEvents.SelectMany(e => e.Details))
{
    // ... Stuff
}

这将获得所有SureViewEventDetails中的所有activeEvents。

Answer 2

在每个activeEvent的循环中，您可以简单地遍历细节：

foreach (var activeEvent in activeEvents)
{
    foreach (var eventDetail in activeEvent.Details)
    {
        // do something with the detail
    }
}

如何使用linq从类中的类列表中获取值

2 个答案: