关于foreach的C# LINQ问题

Question

有没有办法用 linq 或其他更好的方法来编写这个 foreach，

int itemNr = -1;
foreach(ItemDoc itemDoc in handOverDoc.Assignment.Items) {

    itemNr++;
    foreach(ItemDetailDoc detail in itemDoc.Details) {
        int eventDocNr = -1;

        foreach(EventDoc eventDoc in detail.Events) {
            eventDocNr++;

            if(!eventDoc.HasEAN) {
                HideShowPanels(pMatch);
                txt_EAN.Text = String.Empty;

                lbl_Match_ArtName.Text = itemDoc.Name;
                lbl_ArtNr.Text = itemDoc.Number;
                lbl_unitDesc.Text = eventDoc.Description;

                m_tempItemNr = itemNr;
                m_tempEventNr = eventDocNr;
                txt_EAN.Focus();

                return;
            }
        }
    }
}

我只是觉得这不是正确的写法。请指教。

Answer 1

如果不需要 itemNr 和 eventDocNr，您可以使用:

var item =
            (from itemDoc in handOverDoc.Assignment.Items
             from detail in itemDoc.Details
             from eventDoc in detail.Events
             where !eventDoc.HasEAN
             select new 
                {
                    Name = itemDoc.Name,
                    Number = itemDoc.Number,
                    Description = eventDoc.Description 
                }).FirstOrDefault();

if (item != null)
{
    HideShowPanels(pMatch);
    txt_EAN.Text = String.Empty;

    lbl_Match_ArtName.Text = item.Name;
    lbl_ArtNr.Text = item.Number;
    lbl_unitDesc.Text = item.Description;

    txt_EAN.Focus();
}